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Atherosclerosis Supplements 12 (2011) 221–263 Familial hypercholesterolaemia: A model of care for Australasia Gerald F. Watts a,, David R Sullivan b , Nicola Poplawski c , Frank van Bockxmeer d , Ian Hamilton-Craig e , Peter M. Clifton f , Richard O’Brien g , Warrick Bishop h , Peter George i , Phillip J. Barter j , Timothy Bates a , John R. Burnett k , John Coakley l , Patricia Davidson m , Jon Emery n , Andrew Martin o , Waleed Farid p , Lucinda Freeman q , Elizabeth Geelhoed r , Amanda Juniper a,s , Alexa Kidd t , Karam Kostner u , Ines Krass v , Michael Livingston w , Suzy Maxwell s , Peter O’Leary s , Amal Owaimrin x , Trevor G. Redgrave a , Nicola Reid y , Lynda Southwell a , Graeme Suthers c , Andrew Tonkin z , Simon Towler aa , Ronald Trent q , Familial Hypercholesterolaemia Australasia Network Consensus Group (Australian Atherosclerosis Society) 1 a Lipid Disorders Clinic, Metabolic Research Centre and Department of Internal Medicine, Royal Perth Hospital, School of Medicine and Pharmacology, University of Western Australia, Perth, Western Australia, Australia b Department of Biochemistry and Lipid Clinic, Royal Prince Alfred Hospital, University of Sydney, New South Wales, Australia c South Australia Clinical Genetics Service, Genetics & Molecular Pathology Directorate, Women’s & Children’s Hospital, Adelaide, South Australia, Australia d Cardiovascular Genetics Laboratory, Royal Perth Hospital, University of Western Australia, Western Australia, Australia e Preventive Cardiology and Lipid Clinic, Gold Coast Hospital, Griffith University, Queensland, Australia f Baker IDI Heart and Diabetes Institute, Adelaide, South Australia, Australia g Department of Medicine, Diabetes and Endocrinology, Austin Hospital, University of Melbourne, Victoria, Australia h Department of Cardiology, Calvary Cardiac Centre, Calvary Health Care, Tasmania, Australia i Biochemistry and Pathology, Canterbury Health Laboratories, Lipid Clinic, Christchurch Hospital, University of Otago, Christchurch, New Zealand j Heart Research Institute, University of Sydney, Sydney, New South Wales, Australia k Core Clinical Pathology & Biochemistry, PathWest Laboratory Medicine WA, Lipid Disorders Clinic, Royal Perth Hospital, University of Western Australia, Western Australia, Australia l Department of Paediatrics and Clinical Biochemistry, The Children’s Hospital Westmead, Sydney, New South Wales, Australia m Cardiovascular and Chronic Care, Curtin University, and Nursing Research, St Vincent’s Hospital, Sydney, New South Wales, Australia n School of Primary, Aboriginal and Rural Health Care, University of Western Australia, Western Australia, Australia o Department of Paediatric and Adolescent Medicine, Princess Margaret Hospital, Perth, Western Australia, Australia p FH Family Support Group of Western Australia, Perth, Western Australia, Australia q Department of Molecular and Clinical Genetics, Royal Prince Alfred Hospital, University of Sydney, Australia r School of Population Health, University of Western Australia, Western Australia, Australia s Office of Population Health Genomics, Department of Health, Government of Western Australia, Australia t Clinical Genetics, Canterbury Health Laboratories, Christchurch Hospital, New Zealand u Cardiac Imaging Group, Department of Cardiology, Mater Hospital, University of Queensland, Australia v Department of Pharmacy Practice, Faculty of Pharmacy, University of Sydney, New South Wales, Australia w International Cholesterol Foundation, Sutton-Courtney, Oxfordshire, United Kingdom x Department of Dietetics, Familial Hypercholesterolaemia Clinical Support Service, Auburn Hospital, Sydney, New South Wales, Australia y Cardiovascular Prevention and Lipid Disorders Clinic, Christchurch Hospital, New Zealand z Cardiovascular Research Unit, Monash University, Melbourne, Victoria, Australia aa Health Networks, Department of Health, Government of Western Australia, Australia Corresponding author at: School of Medicine and Pharmacology, Royal Perth Hospital, University of Western Australia, GPO Box X2213, Perth, Western Australia 6847, Australia. Tel.: +61 8 9224 0245. E-mail address: [email protected] (G.F. Watts). 1 See Appendix 1. 1567-5688/$ – see front matter © 2011 Elsevier Ireland Ltd. All rights reserved. doi:10.1016/j.atherosclerosissup.2011.06.001
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Page 1: Familial hypercholesterolaemia: a model of care for Australasia

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Atherosclerosis Supplements 12 (2011) 221–263

Familial hypercholesterolaemia: A model of care for Australasia

Gerald F. Watts a,∗, David R Sullivan b, Nicola Poplawski c, Frank van Bockxmeer d,Ian Hamilton-Craig e, Peter M. Clifton f, Richard O’Brien g, Warrick Bishop h, Peter George i,

Phillip J. Barter j, Timothy Bates a, John R. Burnett k, John Coakley l, Patricia Davidson m,Jon Emery n, Andrew Martin o, Waleed Farid p, Lucinda Freeman q, Elizabeth Geelhoed r,Amanda Juniper a,s, Alexa Kidd t, Karam Kostner u, Ines Krass v, Michael Livingston w,

Suzy Maxwell s, Peter O’Leary s, Amal Owaimrin x, Trevor G. Redgrave a, Nicola Reid y,Lynda Southwell a, Graeme Suthers c, Andrew Tonkin z, Simon Towler aa, Ronald Trent q,

Familial Hypercholesterolaemia Australasia Network Consensus Group(Australian Atherosclerosis Society)1

a Lipid Disorders Clinic, Metabolic Research Centre and Department of Internal Medicine, Royal Perth Hospital, School of Medicine and Pharmacology,University of Western Australia, Perth, Western Australia, Australia

b Department of Biochemistry and Lipid Clinic, Royal Prince Alfred Hospital, University of Sydney, New South Wales, Australiac South Australia Clinical Genetics Service, Genetics & Molecular Pathology Directorate, Women’s & Children’s Hospital, Adelaide,

South Australia, Australiad Cardiovascular Genetics Laboratory, Royal Perth Hospital, University of Western Australia, Western Australia, Australia

e Preventive Cardiology and Lipid Clinic, Gold Coast Hospital, Griffith University, Queensland, Australiaf Baker IDI Heart and Diabetes Institute, Adelaide, South Australia, Australia

g Department of Medicine, Diabetes and Endocrinology, Austin Hospital, University of Melbourne, Victoria, Australiah Department of Cardiology, Calvary Cardiac Centre, Calvary Health Care, Tasmania, Australia

i Biochemistry and Pathology, Canterbury Health Laboratories, Lipid Clinic, Christchurch Hospital, University of Otago, Christchurch, New Zealandj Heart Research Institute, University of Sydney, Sydney, New South Wales, Australia

k Core Clinical Pathology & Biochemistry, PathWest Laboratory Medicine WA, Lipid Disorders Clinic, Royal Perth Hospital,University of Western Australia, Western Australia, Australia

l Department of Paediatrics and Clinical Biochemistry, The Children’s Hospital Westmead, Sydney, New South Wales, Australiam Cardiovascular and Chronic Care, Curtin University, and Nursing Research, St Vincent’s Hospital, Sydney, New South Wales, Australia

n School of Primary, Aboriginal and Rural Health Care, University of Western Australia, Western Australia, Australiao Department of Paediatric and Adolescent Medicine, Princess Margaret Hospital, Perth, Western Australia, Australia

p FH Family Support Group of Western Australia, Perth, Western Australia, Australiaq Department of Molecular and Clinical Genetics, Royal Prince Alfred Hospital, University of Sydney, Australia

r School of Population Health, University of Western Australia, Western Australia, Australias Office of Population Health Genomics, Department of Health, Government of Western Australia, Australia

t Clinical Genetics, Canterbury Health Laboratories, Christchurch Hospital, New Zealandu Cardiac Imaging Group, Department of Cardiology, Mater Hospital, University of Queensland, Australia

v Department of Pharmacy Practice, Faculty of Pharmacy, University of Sydney, New South Wales, Australia

w International Cholesterol Foundation, Sutton-Courtney, Oxfordshire, United Kingdom

x Department of Dietetics, Familial Hypercholesterolaemia Clinical Support Service, Auburn Hospital, Sydney, New South Wales, Australiay Cardiovascular Prevention and Lipid Disorders Clinic, Christchurch Hospital, New Zealand

z Cardiovascular Research Unit, Monash University, Melbourne, Victoria, Australia

aa Health Networks, Department of Health, Gov

∗ Corresponding author at: School of Medicine and Pharmacology, Royal Perth Hestern Australia 6847, Australia. Tel.: +61 8 9224 0245.

E-mail address: [email protected] (G.F. Watts).1 See Appendix 1.

567-5688/$ – see front matter © 2011 Elsevier Ireland Ltd. All rights reserved.oi:10.1016/j.atherosclerosissup.2011.06.001

ernment of Western Australia, Australia

ospital, University of Western Australia, GPO Box X2213, Perth,

Page 2: Familial hypercholesterolaemia: a model of care for Australasia

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22 G.F. Watts et al. / Atherosclerosis Supplements 12 (2011) 221–263

bstract

Familial hypercholesterolaemia (FH) is a dominantly inherited disorder present from birth that causes marked elevation in plasma cholesterolnd premature coronary heart disease. There are at least 45,000 people with FH in Australia and New Zealand, but the vast majority remainsndetected and those diagnosed with the condition are inadequately treated.

To bridge this major gap in coronary prevention the FH Australasia Network (Australian Atherosclerosis Society) has developed a consensusodel of care (MoC) for FH. The MoC is based on clinical experience, expert opinion, published evidence and consultations with a wide

pectrum of stakeholders, and has been developed for use primarily by specialist centres intending starting a clinical service for FH. This MoCims to provide a standardised, high-quality and cost-effective system of care that is likely to have the highest impact on patient outcomes.

The MoC for FH is presented as a series of recommendations and algorithms focusing on the standards required for the detection, diagnosis,ssessment and management of FH in adults and children. The process involved in cascade screening and risk notification, the backboneor detecting new cases of FH, is detailed. Guidance on treatment is based on risk stratifying patients, management of non-cholesterol riskactors, safe and effective use of statins, and a rational approach to follow-up of patients. Clinical and laboratory recommendations are givenor genetic testing. An integrative system for providing best clinical care is described.

This MoC for FH is not prescriptive and needs to be complemented by good clinical judgment and adjusted for local needs and resources.fter initial implementation, the MoC will require critical evaluation, development and appropriate modification.2011 Elsevier Ireland Ltd. All rights reserved.

eywords: Familial hypercholesterolaemia; model of care; adults; children; adolescents; diagnosis; genetic testing; cascade screening; assessment; treatment

ontents

1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2232. Summary of recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2253. Overview of algorithms for the model of care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2274. Detection of index cases and diagnosis of FH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2275. Assessment of adult patients . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2286. Diagnosis and assessment of children and adolescents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2307. Management of adults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232

7.1. LDL-cholesterol and apoB targets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2327.2. Diet and lifestyle modifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2327.3. Pharmacotherapy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232

7.3.1. Safety monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2347.3.2. Medication adherence and tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234

7.4. Review intervals and shared care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2347.5. Assessing atherosclerosis and CHD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2347.6. FH in women . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235

8. Management of children and adolescents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2358.1. General and lifestyle considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2358.2. LDL-cholesterol targets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2368.3. Pharmacotherapy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237

8.4. Assessing atherosclerosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8.5. Clinical monitoring and continuity of care . . . . . . . . . . . . . . . .

9. LDL-apheresis and radical therapy for FH . . . . . . . . . . . . . . . . . . . . . .

Abbreviations: ABI, ankle brachial index; ACE, angiotensin converting enzyme; ALein B; ARMS, amplification refractory mutation system; AST, aspartate aminotraCS, coronary calcium score; CHD, coronary heart disease; CIMT, carotid intimomputerised tomography coronary angiography; CUS, carotid ultrasonography; CBESA, exon by exon sequence analysis; ECG, electrocardiography; EST, exercise

ion; FDA, Food and Drug Administration; GP, general practitioner; HDL, high dow density lipoprotein; LFT, liver function test; Lp(a), lipoprotein(a); MBS, Medieaths; MLPA, Multiplex Ligation Probe Amplification; MoC, model of care; NAT

nd Medical Research Council; NPAAC, National Pathology Accreditation Advionvertase subtilisin/kexin type 9; PGD, pre-implantation genetic diagnosis; PNDHAPE, Screening for Heart Attack Prevention and Education Task Force; TGA, T

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238

T, alanine aminotransferase; ApoA-I, apolipoprotein A-I; apoB, apolipopro-nsferase; BMI, body mass index; CACS, Coronary Artery Calcium Score;a-medial thickness; CK, creatine kinase; CRP, C-reactive protein; CTCA,VD, cardiovascular disease; DLCNS, Dutch Lipid Clinic Network Score;

stress test; FH, familial hypercholesterolaemia; FMD, flow-mediated dilata-ensity lipoprotein; InterChol, International Cholesterol Foundation; LDL,care Benefits Schedule; MEDPED, Make Early Diagnosis to Prevent EarlyA, National Association of Testing Authorities; NHMRC, National Health

sory Council; PBS, Pharmaceutical Benefits Scheme; PCSK9, proprotein, prenatal diagnosis; RCPA, Royal College of Pathologists of Australasia;herapeutic Goods Administration; TSH, thyroid-stimulating hormone.

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G.F. Watts et al. / Atherosclerosis Supplements 12 (2011) 221–263 223

9.1. Indications, patient selection and targets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2389.2. Methods for apheresis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2389.3. Monitoring therapy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2389.4. Cost considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2409.5. Other therapeutic options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240

10. Cascade screening: testing and risk notification of families . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24010.1. Risk notification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240

10.1.1. Contacting and informing families . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24010.2. Co-ordination of cascade screening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24210.3. Risk notification without consent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24210.4. Insurance cover and genetic testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242

11. Genetic testing of families . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24312. Laboratory approach to genetic testing for FH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243

12.1. Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24312.2. A protocol for genetic testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24512.3. Assessing the significance of gene variants detected in index cases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245

13. The web of care for FH: the optimal service model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24513.1. Focus, aims and objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24713.2. Co-ordination and integration of care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247

Inter-specialty links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24813.3. Administrative and information technology support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24913.4. Clinical governance: audit, education, training . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24913.5. Patient and family support groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24913.6. Into the future: chronic care model, commissioning, evaluation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250Appendix 1. FH Australasia Network Consensus Group and Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250

Chair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250Writing committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250Steering committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250Contributors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250Consensus process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251Funding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251Disclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251

Appendix 2. Dutch Lipid Clinic Network Criteria for FH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251Appendix 3. Simon Broome Criteria for FH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252Appendix 4. MEDPED Criteria for FH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252Appendix 5. Typical examination features of FH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253Appendix 6. Hypothetical Pedigree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254Appendix 7. ‘Real case’ Pedigree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254Appendix 8. Selected websites for clinical services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255

. . . . . .

1

atfcitfc[idii

tc1cA

AaZMttp

References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. Introduction

Familial hypercholesterolaemia (FH) is the most commonnd serious form of inherited hyperlipidaemia [1]. FH is dueo dominant mutations of genes predominantly affecting theunction of the low-density lipoprotein (LDL) receptor thatlears LDL particles from plasma [2,3], and hence resultsn marked elevation in plasma LDL-cholesterol concentra-ion. FH is present from birth and accelerates the onset of allorms of atherosclerotic cardiovascular disease (CVD), espe-ially coronary heart disease (CHD), by one to four decades1,4,5]. Opportunistic diagnosis of FH followed by screen-ng of family members, the so-called cascade screening, can

etect individuals at an early stage of FH [4,6–11]. Thiss critically important because it enables early interventionncluding lifestyle measures, cholesterol-lowering medica-

pc

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255

ions (particularly statins), and management of other majorardiovascular risk factors [12–17b]. Alarmingly, less than0% of cases with FH have been diagnosed in most Westernommunities, and only 5% are adequately treated [5,18–20];ustralia and New Zealand being no exception [21–23].To address this demand in coronary prevention, the FH

ustralasia Network established a Consensus Group to devisemodel of care (MoC) for FH from an Australian and Newealand (Australasian) perspective. In the present context, theoC was conceptualised as an overarching system, based on

heoretical, experiential and evidence-based standards, forhe provision of highest quality health care services for allatients with FH [24].

This MoC aims to establish a standard of care for FHatients in a framework within which future evidence andonsensus may be included and developed, thereby extending

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224 G.F. Watts et al. / Atherosclerosis Sup

Table 1Grades for recommendations employed for consensus statements.

Grade of recommendation Description

A Recommendation can be trusted toguide practice

B Recommendation can be trusted toguide practice in most situations

C Recommendations may be used toguide practice, but care should betaken in its application

These grades were applied to each of the recommendations in Section 2.Individual members of the Steering Committee were asked to grade the rec-ommendations based on their knowledge of the literature and what theyconsidered best practice in caring for patients with FH. Gradings were dis-cussed and after full consensus of the committee was reached a final gradewas ascribed to each recommendation. All members of the FH AustralasiaN

oAldbiTloE

tmpeMr[

(lcTNstwubrnImrl

etwork Consensus Group approved the final gradings.

ther proposed clinical care programs from Europe and Northmerica [12,13,25–29]. The MoC is intended primarily for

ipid disorder clinics in tertiary centres intending to initiate orevelop a clinical service for FH. The MoC has been informedy published research, clinical experience, expert opinion andnternational guidelines for managing FH [5,12–16,30–34].

he major premises for these recommendations were pub-

ished data on clinical efficacy and outcomes, but informationn cost-effectiveness was also employed where available.xpert opinion was sourced from diverse stakeholders from

cep

Diagnostic criteriaAppendices 2, 3 & 4

ProcesFigure

Clinical protocolFigure 9

Laboratory protocolsFigures 10 & 11

Optimal componentsFigure 12

ModelCare fo

Fig. 1. Overview of algorithms f

plements 12 (2011) 221–263

he disciplines of adult medicine, paediatric and adolescentedicine, clinical genetics, clinical biochemistry, nursing,

harmacy, general practice, population health, and healthconomics; a patient support group was also consulted. TheoC significantly extends and consolidates other Australian

ecommendations on the detection and management of FH10,15,32,35–38].

The MoC is presented as a series of recommendationsTable 1, Section 2) and algorithms (Fig. 1) that if fol-owed could provide a cost-effective, standardised system ofare likely to have the highest impact on patient outcomes.he recommendations were graded according to a modifiedHMRC classification [39], and reflected the full consen-

us of an expert committee that was based on knowledge ofhe relevant literature and best clinical practice. Algorithmsere chosen to provide easy visualisation of the conceptsnderpinning the MoC. The algorithms are accompanied byackground information and explanatory text and reflect theecommendations of the Consensus Group. This MoC shouldot be perceived as prescriptive, but as a tool for guidance.t should therefore be complemented by good clinical judg-ent and adjustments made to the model according to local

equirements, protocols and resources. Acknowledging theack of objective evidence supporting its clinical-efficacy and

ost-effectiveness, this MoC for FH should be viewed as anvolving set of diagnostic and care pathways that will neederiodic review, clinical appraisal and modification.

Children/AdolescentsFigure 4

AdultsFigure 2 & 3

Children/AdolescentsFigure 6

AdultsFigure 5

s8

of r FH

ProcessFigure 2

LDL-ApheresisFigure 7

or model of care for FH.

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G.F. Watts et al. / Atherosclerosis Supplements 12 (2011) 221–263 225

. Summary of recommendations

Recommendation I Models of care and components of service Grade

Figs. 1 and 12 a. Models of care for familial hypercholesterolaemia (FH) should focus on detecting, diagnosing,assessing and managing index cases, as well as on risk notification and cascade screening of familymembers.

A

b. Adults and children/adolescents will require different models of care. Ac. All services need to be integrated across several specialties and incorporated into primary care. Ad. Good clinical governance, teaching and training programs, and family support groups are integral to allmodels of care.

A

Recommendation II Identifying index cases Grade

Fig. 2 a. Index cases of FH should be sought amongst adults with premature cardiovascular disease in primaryand secondary care settings.

A

b. In adults a simple clinical tool based on the Dutch Lipid Clinic Network Score should be used. Ac. All patients with possible-to-definite FH should be referred to a lipid disorders clinic for more detailedassessment and institution of cascade screening.

A

Recommendation III Clinical assessment and management allocation of adults Grade

Fig. 3 a. Secondary causes of hypercholesterolaemia should first be excluded. Ab. The diagnosis of FH should be made using both phenotypic and genetic testing. Ac. Patients should be stratified into risk categories according to presence of cardiovascular risk factorsand personal history of cardiovascular disease.

A

d. Risk stratification should guide the intensity of medical management. A

Recommendation IV Clinical assessment and management allocation of children and adolescents Grade

Fig. 4 a. Children (≥ 5 yr) and adolescents should be tested for FH after the diagnosis of FH has been made in aparent.

A

b. Secondary causes of hypercholesterolaemia should first be excluded. Ac. With rare exceptions, children and adolescents should only be genetically tested for FH after apathogenic variant (mutation) has been identified in a parent or first degree relative.

A

d. Age- and gender-specific plasma LDL-cholesterol concentration thresholds should be used to make thephenotypic diagnosis of FH, an LDL-cholesterol ≥ 5.0 mmol/L indicating highly probable/ definite FH;two fasting lipid profiles are recommended.

B

e. Patients should be stratified into risk categories according to age, presence of other cardiovascular riskfactors, prematurity of family history of cardiovascular disease and the level of hypercholesterolaemia atdiagnosis.

A

f. Risk stratification should guide the intensity of medical management. A

Recommendation V Management of FH in adults Grade

Fig. 5 a. All adult patients with FH must receive advice on lifestyle modifications and all non-lipid risk factorsmust be addressed.

A

b. Plasma LDL-cholesterol targets for routine, enhanced and intensive management should be<4 mmol/L, <3 mmol/L, <2 mmol/L, respectively.

C

c. Achieving these targets will require a fat-modified diet, plant sterols (or stanols) and a statin with orwithout ezetimibe.

A

d. Niacin, resins and a fibrate may be required with more intensive strategies. Ae. Plasma levels of hepatic aminotransferases, creatine kinase and creatinine should be measured beforestarting pharmacotherapy. All patients on pharmacotherapy, particularly statins, should have hepaticaminotransferases monitored; creatine kinase should only be measured when musculoskeletal symptomsare reported; creatinine should be monitored in those with kidney disease.

A

f. All women with FH of child-bearing age should have pre-pregnancy counselling Ag. Statins and other systemically absorbed lipid regulating agents should be discontinued 3 months beforeconception and during pregnancy and breast feeding in women with FH.

A

h. Non-invasive testing for coronary heart disease and atherosclerosis should be considered in patientsundergoing standard and enhanced treatment, with a step-up in treatment considered if there is evidenceof progression of disease. Non-invasive testing for atherosclerosis need not be carried out morefrequently than every two years.

C

i. Patients receiving standard or enhanced management should be reviewed every 6–12 months, and thosereceiving intensive management should be reviewed according to clinical context, with appropriateinterval assessment of cardiac function and referral to cardiology.

B

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2

(

R

F

R

F

R

F

26 G.F. Watts et al. / Atherosclerosis Supplements 12 (2011) 221–263

Continued)

ecommendation VI Management of FH in children and adolescents Grade

ig. 6 a. Patients must receive advice on lifestyle modifications and non-lipid risk factors must be addressed.Effective anti-smoking advice is mandatory.

A

b. Lowest risk patients should be treated expectantly with a fat-modified diet with or without plant sterols(or stanols), with statins considered after the age of 10 years in boys and after the menarche in girls.

B

c. Plasma LDL-cholesterol targets for intermediate and high risk patients should be <4 mmol/L and<3 mmol/L, respectively.

C

d. Reaching these targets requires a fat-modified diet, plant sterols (or stanols) and a statin with orwithout ezetimibe or a bile acid sequestrant.

A

e. The preferred statins for initiating therapy are those that are licensed for clinical use in this age group;in Australia these are pravastatin, fluvastatin or simvastatin, but other statins may be prescribed accordingto clinical indications.

C

f. Weight, growth, physical and sexual development, and well-being should be reviewed regularly in allpatients.

B

g. Plasma levels of hepatic aminotransferases, creatine kinase and creatinine should be measured beforestarting pharmacotherapy. All patients receiving statins should have hepatic aminotransferasesmonitored; creatine kinase should be measured when musculoskeletal symptoms are reported; creatinineshould be monitored in those with kidney disease.

A

h. Carotid artery ultrasonography should be considered for assessing intima-medial thickness andpresence and progression of plaques; this may guide the intensity of medical management.Ultrasonography need not be carried out more frequently than every 2 years.

C

i. Consideration should be given to managing children and adults with FH from the same family in afamily centred clinic

B

ecommendation VII LDL-apheresis for FH Grade

ig. 7 a. LDL-apheresis should be considered in patients with homozygous or compound heterozygous FH. Ab. LDL-apheresis should be considered in patients with heterozygous FH with documented coronaryheart disease who are refractory to or cannot tolerate cholesterol lowering medication.

A

c. LDL-apheresis should be considered in children with homozygous or compound heterozygous FH bythe age of 5 years, particularly if the plasma cholesterol concentration remains at 9 mmol/L or above onmedication.

A

d. LDL-apheresis should be carried out in close collaboration with a centre experienced in apheresis,such as a transfusion medicine service.

A

e. The efficacy, tolerability and safety of LDL-apheresis must be reviewed after each treatment Af. The effect of LDL-apheresis on progression of atherosclerosis should be monitored withechocardiography (aortic valve and root), carotid ultrasonography and/or exercise stress testing.

B

ecommendation VIII Cascade screening: risk notification and genetic/phenotypic testing of families Grade

igs. 8 and 9 a. Notification of relatives at risk of FH should not be instituted without the consent of the index case,with the exception noted below in recommendation c).

A

b. If no consent is given by the index case, rapport should continue to be built and consideration given toreferral for counselling.

B

c. Relatives should only be directly notified of their risk without consent of the index case if there isspecific legislative provision for this breach of confidentiality in the relevant jurisdiction.

C

d. Commonwealth legislation, local state legislation, NHMRC guidelines and local health serviceprotocols about disclosure of medical information without consent should be consulted.

A

e. A proactive approach that respects the principles of privacy and autonomy is required. Af. All material sent to relatives and the telephone approach should be clear, comprehensible and not causealarm. General and specific modes of communication should be used.

A

g. Cascade screening should ideally be carried out as a formal collaborative process between lipiddisorders and clinical genetics services. It should also involve close communication and liaison withprimary care physicians and employ a user-friendly family based data management system.

A

h. Pre-testing counselling should be offered to at risk family members of an index case prior tophenotypic or genetic testing.

A

i. If no consent/assent for genetic testing is obtained phenotypic testing for FH should be offered. Aj. If genetic testing detects the family mutation, a definitive diagnosis of FH can be made in the tested A

individual particularly when the phenotype also suggests FH.k. If genetic testing does not detect the family mutation, the diagnosis of FH can be excluded, exceptwhen the clinical phenotype is highly suggestive of FH.

A

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sis Supplements 12 (2011) 221–263 227

(

R roach Grade

F d to all ‘index cases’ who have a phenotypic diagnosis of FHe)

A

s unlikely (e.g. by Dutch Lipid Clinic Network Score), geneticried out.

C

out in an accredited laboratory. Andex case’, genetic testing may be carried out initially using B

p or kit technology should be confirmed using a different A

s definite or probable (e.g. by Dutch Lipid Clinic Networkby methods that target specific mutations, comprehensive exon

A

boratory report should include an assessment of its significance,e variant is a pathogenic mutation, a previously reported variantof uncertain significance or a benign (normal) variant.

A

detect a mutation, the laboratory report should include a caveatundetected mutations or mutations in untested genes,ongly suggestive of FH

A

T

3

sc2lacrlmMsntdp

4

acfr‘bttiii

owc[Ldsi[bwacmktxan[ro[wnc(m[o

G.F. Watts et al. / Atherosclero

Continued)

ecommendation IX Genetic testing for FH: laboratory app

igs. 10 and 11 a. Genetic testing for FH should be offere(e.g. by Dutch Lipid Clinic Network Scorb. When the phenotypic diagnosis of FH itesting of the ‘index case’ need not be carc. Genetic testing for FH must be carriedd. When searching for a mutation in an ‘icommercial chip or kit technology.e. All abnormal genetic test results by chivalidated method.f. When the phenotypic diagnosis of FH iScore), but no genetic variant is detectedby exon sequencing is recommended.g. If genetic testing detects a variant the laand the report should clearly indicate if thof uncertain significance, a novel varianth. If the genetic testing protocol does notthat the result does not exclude FH due toparticularly if the clinical phenotype is str

he definitions of the grade for the recommendations are given in Table 1.

. Overview of algorithms for the model of care

Fig. 1 provides an overview for the MoC for FH. Theequence of presentation is as follows: detection of indexases and clinical diagnostic criteria (Fig. 2; Appendices–4); diagnosis and assessment of adults, children and ado-escents (Figs. 2–4); management of FH in adults, childrennd adolescents (Figs. 5 and 6); LDL-apheresis and radi-al therapy for FH (Fig. 7); cascade screening, includingisk notification and predictive testing (Fig. 8); clinical andaboratory protocols for genetic testing (Figs. 9–11); opti-

al components of a clinical service for FH (Fig. 12). TheoC has initially been devised for use within a specialised

etting, such as a lipid clinic, run out of departments of inter-al medicine, cardiology or endocrinology in secondary orertiary referral centres. The MoC will need to be furthereveloped to consider current and future potential roles forrimary care providers.

. Detection of index cases and diagnosis of FH

A key challenge facing the care of FH is the system-tic detection of index cases [37,38,40]. The term ‘indexase’ refers to the first individual diagnosed with FH in theamily. Identifying index cases is important because it rep-esents the starting point for family tracing, referred to ascascade screening’, by which the majority of FH cases cane efficiently detected [4,7–9,11]. There are several diagnos-ic tools for diagnosing FH clinically, including those from

he Dutch Lipid Clinic Network [34], Simon Broome Reg-stry [12,41] and the US MEDPED Program [42] (see tablesn Appendices 2–4, respectively). There are, however, nonternationally agreed criteria for the phenotypic diagnosis

mitd

f FH [8,37,43]. We favour the Dutch Lipid Clinic Net-ork Score (DLCNS) because we consider it simpler for

linical use and the numerically integrated scoring system34,37], which does not fully rely on the plasma level ofDL-cholesterol, can provide a more sensitive method foretecting index cases with FH [8,44]. The Simon Broomeystem is an alternative tool favoured in the UK [12] thats comparable to the DLCNS in predicting an FH mutation,8] but could overlook patients with true FH who may note overtly hypercholesterolaemic. The MEDPED System,hich is based solely on plasma total and LDL-cholesterol

nd has some practical appeal, is less sensitive than the otherriteria in predicting an FH mutation and accurate imple-entation requires that cholesterol measurements be widely

nown in family members [42,45]. Illustrative examples ofhe typical examination features (arcus cornealis, tendonanthomata) of FH are given in Appendix 5. Gender- andge-specific thresholds for plasma LDL-cholesterol for diag-osing first-degree relatives with FH were recently published46], but their value in clinical practice has not yet beeneported. The phenotypic diagnosis of FH should be basedn at least two fasting measures of plasma LDL-cholesterol14,47–49]. The value of taking a family history of CHD isell established [5,12,14–16,33,34,50], but its use is ofteneglected in clinical practice [22,51] and this needs rectifi-ation [52–54]. Secondary causes of hypercholesterolaemiae.g. primary hypothyroidism, proteinuria, cholestasis, andedications such as corticosteroids) must also be excluded

14,15], but it is important to note that FH may co-exist withther cardiovascular risk factors [55–57], most importantlyetabolic syndrome and diabetes [17a]. LDL-cholesterol

s underestimated by the Friedewald equation at plasmariglycerides >4.5 mmol/L [47], above which a well validated,irect assay should be employed to measure LDL-cholesterol

Page 8: Familial hypercholesterolaemia: a model of care for Australasia

2 sis Sup

[tds

bCaaw[iDcicoLLrotfrIutdHo[

epva[aBtahbcaoocpcfpatot

ftLhgp

cdicpDmoplaotusf[tawcaaotcaa

5

iapsmcvwpaes

28 G.F. Watts et al. / Atherosclero

14,47]; measurement of apoB is an alternative [58,59], buthe diagnostic cut-off for diagnosing FH has not yet beenefined. Patients with FH do not, however, classically exhibitignificantly high plasma triglycerides concentrations.

Fig. 2 indicates that potential index cases of FH shoulde sought amongst patients aged less than 60 years withVD presenting to coronary care, stroke, cardiothoracicnd vascular units [43], as well as amongst similar patientsttending cardiac rehabilitation programs. The greatest yieldill be from screening younger adult patients with CHD

22,38,41,60]. Where the suspicion of FH is high, prelim-nary assessment of patients using either a full or modifiedLCNS should be employed [22,34]. A simplified modifi-

ation of the DLCNS, suitable for use by non-specialists,nvolves estimating a score for family and personal clini-al history and LDL-cholesterol alone [22,37]; for patientsn statins an upwards adjustment of approximately 30% inDL-cholesterol could be employed [61] if the pre-treatmentDL-cholesterol is unknown. The role of this simple tool

equires evaluation. A persuasive case for universal, aspposed to selective, screening of children for hypercholes-erolaemia has been made, since deficiency in obtaining aamily history of CHD and/or hypercholesterolaemia willesult in children not being tested and treated for FH [62].t has been proposed that this could be done at immunizationsing plasma cholesterol alone and subsequent child–parentesting where indicated [63] or by universally screening chil-ren aged 9–11 years with a standard lipid profile [64a].owever, the acceptability, specificity and cost-effectivenessf these universal screening strategies for FH are questionable4,65,66].

Opportunistic application of the DLCNS should also bemployed in specialist clinics and in primary care. Generalractitioners (GPs) are usually the first to encounter indi-iduals who may have unsuspected FH in the community,nd are therefore critically placed for detecting index cases12,67,68]. Planned health assessment in middle age, suchs the 45–49 year old health check assessment (Medicareenefits Schedule (MBS) Item A27) [69] would be an oppor-

une time for GPs to routinely test for FH, but its uptakend yield needs evaluation. Children with a positive familyistory of hypercholesterolaemia or premature CHD shoulde screened for FH [64a], but this is best done as part of ao-ordinated cascade testing process [9,12]. In primary careretrospective search of clinical databases affords another

pportunity for generating new cases of FH [67]. Flaggingf laboratory reports on patients with plasma cholesteroloncentrations > 7 mmol/L is another method for alertingractitioners about the possibility of FH, but its yield andost-effectiveness remain to be reported. There is also a roleor opportunistic application of the DLCNS by communityharmacists to patients attending to collect a prescription for

statin [70], with the possibility of on-site testing of rela-

ives with a finger prick cholesterol measurement. Anotherpportunity for detecting FH is amongst patients referredo rheumatologists with tenosynovitis or to plastic surgeons

Pvci

plements 12 (2011) 221–263

or the excision of tendon masses. Certain ethnic groups inhe community, such as Christian Lebanese, Afrikaaners andithuanian Jews, in whom the prevalence of FH is particularlyigh due to a gene founder effect [1], should also be tar-eted for screening for the condition; culturally appropriaterocesses should be followed.

When the DLCNS is ≥3, we recommend referral to a spe-ialised FH service or lipid clinic for confirmation of theiagnosis and advice on management and cascade screen-ng. Health providers working in these clinics should haveompetence and training in both clinical lipidology andrevention of CVD [26,71,72]. FH is unlikely when theLCNS is <3 [8,44]. This needs to be appropriately com-unicated to the patient and their GP. For patients on statins,

r other cholesterol lowering medications, a contemporarylasma LDL-cholesterol concentration will give a falselyow DLCNS and pre-treatment values must be obtained toccurately assess the chance of having FH. Hence, we rec-mmend that index cases of FH should be identified in awo-stage process starting with initial phenotypic assessmentsing the DLCNS followed by referral to a specialist FHervice. Employing a DLCNS as low as 3 as a criterionor referring patients to a lipid clinic may be too sensitive8,38], in which case the score may be increased accordingo workloads and resources. If resources allow, an alternativepproach would be to genetically screen for FH in all patientsith premature CHD (e.g. age < 50 years) presenting to the

ardiac services referred to in Fig. 2. All patients identifieds having a likelihood of FH should be provided with simplend clearly written information explaining the importancef FH and the steps involved in diagnosing the condition inhem and their relatives [8,12,37]. The recommended proto-ols for risk notification and cascade screening of relativesnd for genetic testing are discussed later and given in thelgorithms in Figs. 8–10.

. Assessment of adult patients

Whether classified as having possible, probable or def-nite FH [34], all patients should have a detailed clinicalssessment to investigate other cardiovascular risk factors,resence of symptomatic or subclinical atherosclerosis andecondary causes of hypercholesterolaemia. Clinical assess-ent should ideally be undertaken by a specialist trained in

linical lipidology [26,71], with skills in preventative cardio-ascular medicine [72]. The risk of CVD amongst patientsith FH can vary widely [43,73]. This may relate to there-treatment plasma level of cholesterol, genetic causesffecting lipid metabolism or arterial biology, and the pres-nce of other major cardiovascular risk factors, in particularmoking, obesity, hypertension and diabetes [43,55–57,74].

athogenic genetic variants (mutations) that lead to very ele-ated plasma cholesterol and premature CHD may also beonsidered a major risk factor [66], as should an elevationn plasma lipoprotein(a) (Lp(a)) concentration > 0.5 g/L [75].
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G.F. Watts et al. / Atherosclerosis Supplements 12 (2011) 221–263 229

Potential sources for identifying index cases with FH:Coronary Care, Cardiac Rehabilitation, Cardiothoracic Surgery, Stroke Unit, Vascular Surgery, Ward nursing staff, Specialists, GPs, Laboratory report alerts, Pharmacists,

Clinical Genetics Services, Opportunistically in clinics/hospitalsHigh index of suspicion for new cases, Retrospective audit for previous cases, Use

simplified modification of phenotypic criteria for FH (Appendix 2 & 3)

FH unlikely: DLCNS <3FH likely: DLCNS >3

Review by specialist FH clinic

DLCNS

≥3 <3

Follow-up in clinicSee Figure 3

Inform patient and GP

Preliminary clinical assessmentAppendix 2: Dutch Lipid Clinic Network Score (DLCNS)

ex case

B(iatfCfatatpcmct[icr

a

lfnarh(aor[(pzpeCepa

Fig. 2. Detection of ind

ox 1, linked to Fig. 3, gives mandatory, and recommendedbut optional) clinical indices that may be useful in assess-ng patients with FH. Non-invasive tests for atherosclerosisnd CHD should be considered optional and individualisedo specific clinical situations [76–78], being particularly use-ul in FH when the family history of CVD is unclear [79].arotid ultrasonography (CUS) can be a particularly use-

ul test that recognizes that in FH atherosclerosis is alsoccelerated in extra-cranial cerebral arteries and its detec-ion serves as a surrogate for the involvement of coronaryrteries [80–82]. Clinical assessment must take account ofhe psychological, intellectual, social and ethnic status of theatient [8,83–86], and potential need for special methods ofounselling. Inadequate health literacy is not uncommon andust be addressed [87,88]. Detailed exploration and clear

ommunication and discussion of the individual’s family his-ory of CVD are essential for effective management of FH89,90]. After clinical assessment, patients should be dividednto those at lowest, intermediate and highest risk of CVD;ategories should be modified according to regular clinical

eview (see Fig. 5).

This stratification of patients is consistent with otherpproaches to cardiovascular risk assessment [14–17a]. At

bii

s and diagnosis of FH.

owest risk are patients with no other cardiovascular riskactors (smoking, obesity, diabetes, and hypertension) andegative tests for subclinical atherosclerosis. At intermedi-te risk are patients with at least one other cardiovascularisk factor or subclinical evidence of early atherosclerosis. Atighest risk are patients with a history of symptomatic CVDcoronary, cerebral or peripheral vascular disease) and/orrevascularization procedure, or with subclinical evidence

f more advanced atherosclerosis. Subclinical atheroscle-osis may be defined according to published guidelines77,78] – no evidence: a carotid intima-medial thicknessCIMT) < 75th percentile (for age and sex) with no carotidlaques or a Coronary Artery Calcium Score (CACS) ofero; early evidence: a CIMT > 75th percentile with nolaques (or stenosis) or a CACS ≥ 1 but <100; more advancedvidence: presence of carotid plaques (or stenosis) or aACS > 100. If electing to do ankle brachial index (ABI),xercise electrocardiography (ECG) testing and/or com-uterised tomography coronary angiography (CTCA) insymptomatic patients on clinical grounds, abnormal results

y recognised criteria [13,77,78,91] may also be employedn allocating patients to the higher risk categories shownn Fig. 3.
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230 G.F. Watts et al. / Atherosclerosis Supplements 12 (2011) 221–263

Box 1: Information used for clinical assessment of adults with FH

• Mandatory: Age, gender, history: CVD (coronary, cerebral and peripheral arterial disease)/revascularisation, history of major cardiovascular risk factors, psychological and socioeconomic status, family history of hypercholesterolaemia and CVD, BMI, waist circumference, blood pressure, bruits, arcus cornealis, xanthelasma, tendon xanthomata, triglycerides, total cholesterol, HDL-C, Lp(a), apoB, smoking status, menopausal status, reproductive status, drug history

• Recommended/optional: glucose, insulin, CRP, creatinine, TSH, albuminuria, ApoA-I, ABI, EST, carotid and Achilles tendon ultrasound, CTCA/calcium score

• Major CVD Risk factors include very elevated LDL-C (>7 mmol/l), low HDL-C, diabetes, smoking, obesity, hypertension, high Lp(a), family history of very premature CHD.

FH diagnosed

Intensivemanagement

Intermediate risk>1 other major CVD risk factors, early subclinical

CVD

Highest riskSymptomatic CVD,

revascularization, advanced subclinical CVD

Lowest riskNo other major CVD risk

factors, no symptomatic or subclinical CVD

Enhanced management

Standard management

Clinical assessment

ent of

aawtssptmtrapacrcp2Ps[u

6a

c

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This subdivision into lowest, intermediate and highest riskllows management to be classified as standard, enhancednd intensive, respectively. This risk stratification procedureill allow the best use of clinical resources, which can in

urn increase cost-effectiveness. Framingham risk scores, orcores derived from other cardiovascular risk engines, are notufficiently reliable to guide management in FH [14,15,38],articularly in younger patients, in whom a measure of long-erm risk based on imaging of subclinical atherosclerosis

ay be more appropriate [92]. Another option would beo offer intensive management to intermediate and highestisk cases of probable/definite FH. Similarly, enhanced man-gement could be considered for the lowest risk cases withrobable/definite FH and for the possible cases of FH whore at intermediate or highest risk of CVD. The yield andost-effectiveness of all these different therapeutic strategiesequires further evaluation. The importance of assessing otherardiovascular risk factors beyond hypercholesterolaemia isarticularly underscored by the rising tide of obesity, typediabetes and hypertension in our community [17a,93,94].

atients considered to have a homozygous FH phenotypehould evidently be classified at exceptionally high risk43,95] and be referred for consideration for radical therapysing LDL-apheresis (see Fig. 7).

. Diagnosis and assessment of children and

dolescents

One of the most potentially contentious issues in theare of FH is the identification of the condition in children

[to

adult patients.

nd adolescents [48,96–100]. Efforts are well justified bylear indications that FH remains underdiagnosed particu-arly in the young [18,21,96] and that untreated patients sufferardiovascular damage from an early age [81,96,101,102].urthermore, there are reassuring data concerning the safetynd efficacy of dietary and pharmacological treatments99,103–108], including confirmation that children receivingtatins achieve normal growth and developmental milestonesnd do not exhibit alterations in plasma adrenocortical hor-one levels. While there have been concerns about the

sychological impact of ‘disease labelling’ from an early age8,84,85], formal studies provide reassurance that this is notsignificant issue [7,86,109]. Despite advances in the overallare of patients with FH, medical services for children withhe condition remain particularly underdeveloped [110].

Fig. 4 summarizes the recommended approaches tohe diagnosis, assessment (Box 2), and risk stratificationllocation of FH in children and adolescents. We recommendhat FH screening be offered to all children (aged ≥ 5 years)nd adolescents at risk of having FH, particularly in theontext of a co-ordinated cascade testing process. Otherecommendations suggest screening at risk children earlier at2 years of age [64a,b] and universally screening all children

or dyslipidaemias aged 9–11 years [64a]. Under the age of 5ears screening may be justified where there is a strong desirerom the parents or severe FH (homozygous or compoundeterozygous) is suspected, consistent with other guidelines

12,98]. Because the DLCNS is not applicable to children,he diagnosis of FH must rely either on serial measurementsf a fasting plasma level of LDL-cholesterol [46,48,97], or
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Box 2: Information used for clinical assessment of children and adolescents with FH

Mandatory: Age, gender, history including cardiovascular risk factors, psychological status, family history of hypercholesterolaemia and CVD, BMI, waist circumference, blood pressure, bruits, arcus cornealis, xanthelasma, tendon xanthomata, triglycerides, total cholesterol, LDL-C, HDL-C, Lp(a), apoB, smoking status, reproductive status, drug history

, CUS for

LDL-C <5.0 mmol/L

Genetic + LDL-C testing of child

Pathogenic mutation detected

No

LDL-C < 75 percentileBoys <3.0 mmol/LGirls <3.3 mmol/L

No pathogenic mutation detected

LDL-C >75 percentileBoys >3.0 mmol/LGirls >3.3 mmol/L

LDL-C >5.0 mmol/L

Consent / assent to genetic testing

Pathogenic gene variant (mutation) identified in parent(s)

Clinical assessment

Boys <10yr, Girls before menarche

Boys >10yr, Girls after menarche

1 or more of the following:Early (M <50yr, F <40yr) CVD in family,

>2 CVD risk factors, diabetes, LDL-C >6.0 mmol/L

Lowest risk FHExpectant

management

Intermediate risk FHEnhanced

management

Highest risk FHIntensive management

Reassure patient and family and inform GP

Parent(s) diagnosed with FH

LDL-C testing of child

ildren a

pfcIga[wa[dsrBmiacwmmlmhoemB

apapab(CcmsFapwFpfcFcarts

Recommended/optional: glucose, insulin, CRP, creatinine, TSH, albuminuria, ApoA-I

Fig. 4. Diagnosis and assessment of ch

referably on genetic testing where a recognised mutationor FH has been detected in a parent [7,8,66]. Secondaryauses of hypercholesterolaemia must be excluded [64a,b].rrespective of whether the diagnosis of FH will be madeenetically, plasma LDL-cholesterol must be measured inll patients since the result is essential to guide therapy96–98]. Predictive genetic testing of children for FH is alsoell justified as preventive treatment can be instituted before

dulthood with lifestyle measures and pharmacotherapy96–98,103,108] (see Fig. 6). Genetic counselling includingiscussion of the implications of DNA testing in childrenhould be provided at the time the parent receives the geneticesults confirming the diagnosis of FH [8,85,111–115].ecause of ethical issues involved in genetically testinginors [114,115], it is usual and best practice to first genet-

cally test a phenotypically affected parent [64b]. This canlso circumvent issues related to a non-paternity event. In rareircumstances, such as refusal of a parent to be tested first orhen autosomal recessive FH is suspected [3], genetic testingay first be carried out in the child. Another special situationay arise when the child has significant hypercholestero-

aemia without the detection of the family’s pathogenicutation. In this case, after exclusion of secondary causes of

ypercholesterolaemia and appropriate genetic counselling,ther causative mutations for FH should be sought from the

xtended pedigree. Detecting an FH causing mutation wouldake the child or adolescent eligible for Pharmaceuticalenefits Scheme (PBS) government subsidy for a statin at

wbw

early atherosclerosis, FMD of brachial artery for endothelial function.

nd adolescents. *See text for caveats.

n LDL-cholesterol > 4.0 mmol/L when the family history ofremature CVD or tendon xanthomata is unclear or unobtain-ble [116]. When an FH causing mutation is unknown in thearent, the diagnosis of FH in children should be based on agend sex adjusted LDL-cholesterol levels, the 95th percentileeing 3.5 mmol/L for boys and 3.8 mmol/L for girls [37,48]see Fig. 4). If employing the modified Simon Broomeriteria, the universal cut-off for probable FH is LDL-holesterol > 4.0 mmol/L [12,41]. At least two consecutiveeasurements of LDL-cholesterol over 6 months in fasting

amples should be used to make the phenotypic diagnosis ofH [49,98]; a non-fasting lipid profile may be employed asn initial screening test, however. Knowledge of the child’slasma LDL-cholesterol and whether a parent is being treatedith a statin may provide a simple clinical tool for diagnosingH [117]. Most children with plasma LDL-cholesterol >95thercentile for age and sex and an autosomal dominant patternor inherited hypercholesterolaemia, in whom secondaryauses of dyslipidaemia have been excluded, will have anH causing mutation [118]. The thresholds for plasma LDL-holesterol concentration recommended above for makingphenotypic diagnosis of FH are compatible with those

ecently reported to accurately predict an FH causing muta-ion [46]. Whether using phenotypic or genetic approaches,creening children for FH requires expertise in working

ith and giving advice to families [8,84,98,119,120] and isest undertaken in close liaison with paediatric services andhere indicated with genetic counsellors [115,121].
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32 G.F. Watts et al. / Atherosclero

All individuals with at least a possible diagnosis of FHhould be clinically assessed according to mandatory and rec-mmended (but optional) requirements shown in Fig. 4. Withew exceptions, these are generally similar to those recom-ended previously for adults. Of the available non-invasive

ests for subclinical atherosclerosis in children and adoles-ents, measurement of CIMT with ultrasonography is theost promising at present, but it requires special expertise

nd if used in risk stratification should be carried out accord-ng to recommended protocols [82,122]. With the exceptionf homozygous or compound heterozygous FH, boys agedess than 10 years and girls who have not reached the menar-he should generally be considered to have low risk FH andeceive expectant treatment. Boys over the age of 10 yearsnd girls who have reached the menarche without cardiovas-ular risk factors or objective evidence of increased CIMThould be considered to have moderate risk FH and receivenhanced treatment. Boys over 10 years and girls who haveeached the menarche, with a family history of very prema-ure CVD, two or more major cardiovascular risk factors, orDL-cholesterol > 6 mmol/L, should be considered to haveigh risk FH and receive intensive treatment [12,96–98]. Cer-ain high risk children and adolescents with FH should ideallye managed in a joint adult-paediatric FH clinic [123]. Fac-ors that may be used to triage patients for this clinic includeamily dynamics, current lifestyle of the family and child,dherence to treatment, severity of family history of CHD,nd presence of other major cardiovascular risk factors (obe-ity, hypertension, diabetes and smoking) [123,124]. Whilell children with FH should ideally be referred to a paediatricervice, we consider it feasible for affected parents and chil-ren to be reviewed together by an adult service in a ‘familylinic’ [123], provided staff have the required competen-ies and the environment of the clinic is appropriate. YoungH patients being reviewed in a paediatric clinic should beeferred to an adult clinic around the age of 16 years, withppropriate arrangements made for transitional care and withlose involvement of the GP.

. Management of adults

Fig. 5 shows the protocols for adult patients with FH allo-ated to standard, enhanced and intensive management. Inarallel with lowering elevated plasma cholesterol, appro-riate lifestyle modifications should be emphasised and allajor non-lipid cardiovascular risk factors must be treated

ccording to expert guidelines [14,16,17a,32,33,125–129];ffering advice and support on smoking cessation is manda-ory. Low-dose aspirin should be used in highest risk FH andonsidered in intermediate risk FH [128].

.1. LDL-cholesterol and apoB targets

The recommended therapeutic targets for absolute plasmaoncentrations of LDL-cholesterol and apolipoprotein B

sp

plements 12 (2011) 221–263

apoB) are given in Fig. 5. These targets have been choseno be compatible with other therapeutic guidelines for theanagement of hypercholesterolaemia [13–16,32,59]; ther-

peutic targets should evidently be lower with increasingVD risk. Measuring apoB may not, however, be necessary

n leaner FH patients with plasma triglyceride concentrations2.0 mmol/L. ApoB accurately reflects the plasma concen-

ration of atherogenic LDL particles. ApoB is particularlyseful, and preferable to LDL-cholesterol, when LDL par-icle number increases and both size and density fall as aonsequence of hypertriglyceridaemia [58,59].

Hypertriglyceridaemia is a feature of obesity, metabolicyndrome and type 2 diabetes [17a], all of which are increas-ng in prevalence in the background population and hencemongst patients with FH [93,94]. Use of an apoB targetay be restricted to FH patients who exhibit an elevated

riglyceride level > 2.0 mmol/L [17a,58]. Even with con-emporary treatments, achieving the absolute targets forDL-cholesterol and apoB shown in Fig. 5 may not bettainable by some patients, particularly those with a higheraseline plasma cholesterol [61], in which case a more realis-ic general target of a 40–50% reduction from pre-treatmentevels could be used [12,128].

.2. Diet and lifestyle modifications

Diet and lifestyle modifications are cornerstonesf the management of all types of dyslipidaemias14–17a,32,33,59,130], including FH [13,131]. Diets shoulde low in saturated fat and energy and adjusted to achieveesirable body weight [15,132]. Dietary counselling by aegistered dietician is recommended for all affected indi-iduals and families [133]. Dietary supplementation withlant sterols or stanols should be considered [134]. Moder-te intensity aerobic exercise for at least 30 min on 5 daysf the week should be considered to prevent obesity andiabetes, with advice appropriately adjusted in those withstablished CHD [32]. Several strategies may be employed,here indicated and feasible, for improving long-term adher-

nce to dietary and life-style changes, including involvinghe patient, setting goals, encouraging self-monitoring, fre-uent and prolonged contact, and motivational interviewing135]. However, almost all patients will require medicationo lower the elevation in LDL-cholesterol. Offering effectivereatments and advice on smoking cessation is mandatorynd appropriate management guidelines should be followed32]. Alcohol consumption should be limited to no more than

standard drinks per day. Stress, anxiety and depressionust be considered in all patients and managed accordingly

32,136].

.3. Pharmacotherapy

In Australia, the PBS eligibility criteria for governmentubsidy for lipid modifying agents cover almost all adultatients with FH, particularly if the molecular diagnosis of

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G.F. Watts et al. / Atherosclerosis Supplements 12 (2011) 221–263 233

Enhanced

Diet + Plant Sterols + Statin

± Ezetimibe± Niacin

Diet + Plant Sterols + Statin

± Ezetimibe± Niacin ± Resin

± Fenofibrate

Adherence, tolerability +

safety checks

Adherence, tolerability +

safety checks

Consider interval non-invasive testing for

coronary artery disease / atherosclerosis

Positive result or progression

of disease

Consider interval test of cardiac function:

exercise ECG / Stress echocardiogram /

myocardial perfusion scan

Clinically significant

positive result

IntensiveStandard

Diet + Plant Sterols + Statin

± Ezetimibe

Adherence, tolerability +

safety checks

Consider interval non-invasive testing for

coronary artery disease / atherosclerosis

Positive result

Provide and reinforce information on:Healthy diet, tobacco avoidance, exercise, family and psychological support and medication adherence.

Treat non-lipid risk factors:Diabetes, hypertension, obesity, smoking, consider aspirin

Negative result Negative or stable result

Negative or stable result

Review interval: 12 months Review interval: 3-6 months Review interval: as per clinical context

F lowingr

FZditdttfsaNsrapttsridbh

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ig. 5. Management of Adults (see text for more information on action foladical therapy).

H has been confirmed with a DNA test [116]. In Newealand government subsidies are similar, but the spectrum ofrugs is slightly more restricted [137]. HMG CoA reductasenhibitors (or statins) are by far the most common and effec-ive drugs to treat FH [104,107,128,129,138–146]. Statinsecrease the incidence of CHD [143–145] and are estimatedo be cost-effective in treating FH [147,148]. Reduction inhe costs of statins will, however, make the medical careor FH even more cost-effective in the future. All the majortatins are government subsidised in Australia, but onlytorvastatin, simvastatin and pravastatin are subsidised inew Zealand. After initiation of statin therapy, all patients

hould be reviewed at 6–8 weeks to monitor LDL-cholesterolesponse, adherence, safety parameters and tolerability [61],nd 6–12 monthly thereafter if targets are achieved and noroblems documented. The statin should be up-titrated tohe maximally recommended tolerable dose that achieveshe therapeutic targets shown in Fig. 5; patients may requirewitching to more potent statins [61], such as atorvastatin orosuvastatin. Higher risk patients who require greater lower-

ng of plasma LDL-cholesterol and apoB will require otherrugs, especially ezetimibe [149,150], but also niacin, fenofi-rate and bile acid binding resins [151–154]. Patients withigher plasma LDL-cholesterol levels will require a combi-

3iei

initiation of therapy, treatment of special groups, shared care with GP and

ation of drugs to achieve therapeutic targets. Combinationrug regimens that target LDL-cholesterol can decrease pro-ression of CHD in patients with FH [155]. Niacin may bearticularly indicated for lowering high plasma Lp(a) concen-ration [75,151,152]; in FH we recommend an Lp(a) < 0.5 g/L75]. Fibrates would be relatively contraindicated with aistory of untreated choleliathisis [156]. For patients notchieving treatment targets, additional agents should gener-lly only be introduced after at least 12 months of testingnd adjusting the statin regimen and confirming adherence toedication. In higher risk patients, additional agents should

e considered after an earlier interval (e.g. 4–6 months) ofesting the statin regimen. Residual hypertriglyceridaemiand low HDL-cholesterol (the so-called ‘atherogenic lipidrofile’) while on a statin is an indication for consider-ng treatment with niacin, a fibrate or higher doses ofupplemental omega-3 fatty acid ethyl esters [152,157].ypertriglyceridaemia in FH patients should be managed

ccording to recently published guidelines [158,159]. Theres outcome evidence supporting use of lower doses of omega-

fatty acids in patients who have sustained a myocardialnfarction [160]. Niacin, fibrates and omega-3 fatty acidthyl esters, together with a very low fat diet, will also bendicated in rare instances of severe hypertriglyceridaemia

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34 G.F. Watts et al. / Atherosclero

o prevent acute pancreatitis [14,157,161]. There has beenenewed interest from Japan in the therapeutic role of probu-ol [162], a drug formerly used to treat FH and withdrawnrom the European and US markets because of safety con-erns; use of the present formulation of this drug cannot beecommended.

.3.1. Safety monitoringPlasma hepatic aminotransferases (ALT, AST), creatine

inase (CK) and creatinine levels should be measured rou-inely as baseline safety checks prior to starting medications61,163]. Hepatic aminotransferases should be monitoredccording to the approved product information for the drugs,nd checked at least every 3 months if there is a history ofiver disease (e.g. chronic hepatitis or cirrhosis) or more fre-uently if plasma levels rise to three-fold greater than thepper reference limit; measurement of serum bilirubin maylso be used to indicate the severity of liver toxicity. PlasmaK should be measured when musculoskeletal symptoms are

eported. Particular vigilance is required in patients receiv-ng higher doses of a statin, and patients predisposed to statinide-effects, specifically the elderly and those taking multi-le medications including the combination of a statin withfibrate [163,164]. Patients on niacin also require monitor-

ng of plasma glucose and uric acid because of a small, butignificantly increased risk of hyperglycaemia and hyperuri-aemia [165]. Plasma ALT and AST should be measuredbout every 6 months in patients receiving statin–niacin andtatin–fibrate combinations. Evidence of chronic kidney dis-ase, as estimated by an elevation in plasma creatinine andall in estimated glomerular filtration rate, would be a precau-ionary indication to initiate treatment with, or switch to, atatin that is not eliminated by the kidney [61]. Statins shouldot be initiated if the baseline plasma, ALT, AST or CK lev-ls are >3 times the upper reference limit. Discontinuation ofhe statin or revision of the dose or regimen is required whenhe plasma aminotransferase or CK levels rise to >3 timeshe upper reference limit on treatment. Alternative agentsuch as a ezetimibe or bile acid sequestrants may need to beubstituted for a statin.

.3.2. Medication adherence and tolerancePharmacists could play a key role by monitoring patients’

se of therapy, flagging non-adherent patients to GPsnd clinics, reducing therapeutic complexity and by moreirect involvement in improving adherence to medication166–169]. FH patients who are non-adherent to therapy areest reviewed in a dedicated clinic that could involve inputrom pharmacy, clinical pharmacology, psychology and nurs-ng [170]. Action plan interventions may be more effectiven FH than interventions aimed at altering perceptions aboutaking statins [171]. Detailed communication and discus-

ion of an individual’s family history of CVD may improvedherence to treatment [89,90]. Health literacy must alsoe considered [172,173]. The underlying causes of hyper-holesterolaemia and adherence to statin therapy remains a

pidm

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ignificant issue amongst many at risk patients who have notpecifically been diagnosed with FH [174,175]. This alsoeeds addressing at a primary care level in the community176–178]. Poor control of hypercholesterolaemia and otherisk factors for atherosclerosis is a particular on-going con-ern in all patients with CHD [179,180].

Patients who are intolerant of medications require specialupport and follow-up [170]. Musculoskeletal side-effectsan be frequently reported with statins and require special-st care [170,181]. Potential drug interactions with statinshould be closely monitored, [163] noting the increased riskith drugs that are metabolised by CYP3A4 with simvas-

atin and atorvastatin and by CYP2C9 with rosuvastatin anduvastatin [61,163]. Ezetimibe is well tolerated and has atatin dose sparing effect [149,150]. Bile acid binding resinsave frequent gastrointestinal side-effects (e.g. constipationnd abdominal discomfort) and can affect the absorption ofther drugs and fat soluble vitamins [153]; tolerability isreatest with colesevelam [182]. Resins should be taken witheals and gastrointestinal side-effects minimised by increas-

ng fluid and fibre intake and use of stool softeners [153].lushing is a problem with niacin, but this is diminished with

he newer formulations (Niacin-ER, Tredaptive) and with co-dministration of aspirin [151,152]; hyperglycaemia can beparticular problem in FH patients with impaired glucose

olerance or diabetes, and hyperuricaemia in those with aistory of gout [165]. Co-administration of fibrates and atatin can increase the risk of myopathy, but this is dimin-shed significantly when a statin is combined with fenofibrate156,163].

.4. Review intervals and shared care

Uncomplicated patients on routine therapy may beeferred back to the GP for long-term follow-up, but shouldlso be reviewed annually in a lipid disorders clinic. Thoseeceiving enhanced care should also be monitored in the lipidlinic at 3–6 monthly intervals until plasma LDL-cholesterolargets are achieved and if stable should be reviewed annuallyn this clinic with 6 monthly follow-up by the GP. Patientseceiving intensive management should be retained in theipid disorders clinic and reviewed at intervals determined bylinical context and requirements. When changing medica-ion and increasing doses, patients may need more frequenteview. Systems for the shared care of FH patients betweenpecialties and primary care need to be further investigatedn order to appropriately inform future MoCs for FH [68].

.5. Assessing atherosclerosis and CHD

CTCA, CUS, ankle-brachial index measurement, stresschocardiography, treadmill ECG and myocardial nuclear

erfusion scanning are all potential options for monitor-ng subclinical atherosclerosis and/or symptomatic coronaryisease [76–78] (see Fig. 5). Consistent with expert recom-endations [76–78,91], we consider that there is potential
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G.F. Watts et al. / Atherosclero

alue in non-invasive testing in asymptomatic FH patients fortherosclerosis and coronary disease. However, non-invasiveesting has been better validated for assessing target organamage and stratifying risk than for monitoring progressionf disease [13,79]. Nevertheless, clear evidence of progres-ion of atherosclerosis in coronary, carotid or femoral arterieshould be a clinical indication for intensifying treatment andttaining the recommended targets for LDL-cholesterol andpoB [13,77,183]. The intervals for repeat testing shownhould be determined by clinical judgment and availableesources. With CUS, the choice of equipment, technicalspects and operator training must be followed accordingo expert recommendations [78,82,122]; imaging protocols

ust be comprehensive and standardised, and age- and sex-pecific reference values for CIMT and a detailed assessmentf plaques should be employed. CUS is better suited for chil-ren and younger patients owing to absence of radiation risk,hile CTCA may be useful to assess plaque burden andbstructive stenosis in asymptomatic adult patients. Futureevelopments and refinements in cardiac CT imaging mayllow this imaging modality to be fully incorporated intolinical algorithms for assessing atherosclerosis and CHD inH. All asymptomatic patients should proceed to a functional

est, ideally a stress echocardiogram. All ‘positive’ treadmillests, myocardial perfusion scans and stress echocardiogramshould be followed by referral to a cardiologist for theonsideration of invasive coronary angiography and appro-riate further care [13,78,110]. Patients with more than 70%tenosis of the internal carotid artery should be referred foronsideration for revascularization [184,185].

.6. FH in women

Special considerations apply to the management of FHn women [43,186]. CHD risk is lower in women than menith FH [43,73,187]. Women may therefore be less likely

o be treated with a statin at a younger age, but this needsevision according to a detailed family history of prematureVD, the presence of other cardiovascular risk factors and

he rate of progression of CIMT [43,55–57,74,75,188]. Lowstrogen-containing oral agents, intra-uterine devices andarrier methods are the preferred approaches to contracep-ion in women with FH [186]. The latter two options shoulde particularly recommended to women older than 35 yearsho are of childbearing potential. Pre-pregnancy counselling

s recommended for all women [66,129,186,187]. Statinsnd other systemically absorbed lipid regulating medicationshould be discontinued 3 months prior to planned conceptionnd during pregnancy and lactation [186]. However, womenho fall pregnant accidentally while taking a statin could be

e-assured that the likelihood of any foetal complications ismall [189,190]. The risks for future pregnancy and the foe-

us should be discussed at least annually with all women andirls of childbearing age. Controlling hypercholesterolaemiauring pregnancy is particularly important in women withstablished CHD, and it may also decrease the severity of FH

cm

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n offspring who inherit the condition [189,191]. Bile acidinding resins are the only safe agents to control hypercholes-erolaemia in pregnancy, but only modestly lower plasmaDL-cholesterol levels and poor tolerability related to gas-

rointestinal side-effects remains a major problem [129,153].newer formulation, colesevelam, is more tolerable than

he older resins [182]. Pregnant women with heterozygousH and established CHD, or with homozygous FH, shoulde considered for LDL-apheresis [95,129]. During breasteeding, resins could be employed to lower LDL-cholesterolhere indicated. More data are required on the outcomes ofregnancy in women with FH and on the effect of statinsn the foetus in the first trimester; an appropriate registry ofatients is recommended.

Particular considerations are also required concerninguture pregnancy when one or both members of a coupleave FH. In these circumstances, there are a number ofptions available which enable the couple to avoid havingchild affected by FH. These options include not conceiv-

ng, adoption (local and overseas), using donor gametes,renatal diagnosis (PND) using chorionic villus sampling ormniocentesis and pre-implantation genetic diagnosis (PGD)192,193]. There are a number of issues associated whichach of these choices and couples may find it useful to meetith a counsellor who has expertise in reproductive coun-

elling. Couples considering PND or PGD should be referredo a clinical genetics service for counselling and pre-test workp, ideally prior to conceiving.

. Management of children and adolescents

Fig. 6 summarizes the management of FH in children anddolescents.

.1. General and lifestyle considerations

All patients, and ideally all immediate family mem-ers, should receive expert advice on lifestyle modificationsncluding healthy eating, regular exercise and avoidancef cigarette smoking [12,97,103]. Prevention of obesity,etabolic syndrome and diabetes is paramount in FH

97]. Psychological counselling and social support may beequired in special circumstances in certain families withH [8,84,124]. Parents of affected children must not smoke.on-cholesterol cardiovascular risk factors such as diabetes,ypertension and obesity should be treated according to rele-ant expert guidelines [97]. There is clear value in reviewingatients in a paediatric clinic, but we recommend that theaediatrician has some expertise in clinical lipidology andn the prevention of CVD [72]. A good, practical alternatives a family based clinic in which affected children, adoles-

ents and their parents can be reviewed collectively by aultidisciplinary team [123].Lowest risk FH should be treated with a fat modified

iet and plant sterol supplementation [97,103,134,194],

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236 G.F. Watts et al. / Atherosclerosis Supplements 12 (2011) 221–263

Provide and reinforce information on:Healthy diet, tobacco avoidance, exercise, family and psychological support and medication adherence.

Treat non-lipid risk factors:Diabetes, hypertension, obesity, smoking

Expectant management Enhanced management Intensive management

Target LDL-C <4.0 mmol/L

Target LDL-C <3.0 mmol/L

TreatmentDiet + plant sterols

TreatmentDiet + plant sterols + statin ± ezetimibe ± bile-acid sequestrant

Statins contraindicated in pregnancy: contraceptive advice in adolescents

Monitoring: 1 – 2 yearlyWeight, growth,

development/well-being, compliance (lifestyle)

MonitoringWeight, growth, well-being, physical & sexual development,

hepatic aminotransferases, creatine kinase (if musculoskeletal symptoms present), adherence (lifestyle, pharmacotherapy)

No

Restratifyas per

assessment protocol

Consider carotid ultrasound 2 – 5 yearly

Consider treating as high risk adult FH

Treat as high risk childhood FH

Consider carotid ultrasound 1 – 3 yearly

Boys <10 yr, Girls before menarche

Boys >10 yr, Girls after menarche

Progression of carotid atherosclerosis (increase in CIMT and/or detection of plaques)

of child

wdecesrbcapahLpmp[p

cbFsabmpoc

8

c

Fig. 6. Management

ith annual or bi-annual monitoring of weight, growth andevelopmental milestones. Increased intake of fruit and veg-tables may compensate for reduction in plasma carotenoidoncentrations in children consuming a plant sterol-esternriched diet [195]. The value and safety of prescribingtatins for children and adolescents with FH is universallyecognised [64a,96–98,105,106,108]. As a general guide,oys older than 10 years and girls who have reached menar-he should be considered for statin therapy. The specific aget which to introduce a statin is not evidence-based and inractice should be determined by good clinical judgmentnd assessment of several factors. These include the familyistory of premature CVD, the prevailing plasma level ofDL-cholesterol, the type of FH mutation identified and theresence of other cardiovascular risk factors (e.g. diabetesellitus) [1,12,43,55–57,66,73–75,188], as well as the

arents’ perceptions and concerns on use of medication123,196]. The LDL-cholesterol treatment targets in youngatients with heterozygous FH will also depend on similar

<ogc

ren and adolescents.

onsiderations (Fig. 6). The health literacy of parents muste addressed when managing children and adolescents withH [88,172,173]. Homozygous patients with FH need to betarted on pharmacotherapy as soon as practicable after birthnd definitely by the age of 10 years [95]. In Australia, toe eligible for PBS subsidy any FH patient aged <18 yearsust have a plasma LDL-cholesterol >4.0 mmol/L with a

ositive family history of premature, symptomatic CVDr tendon xanthomata, or known to be positive for an FHausing mutation [116].

.2. LDL-cholesterol targets

The recommended targets for plasma LDL-cholesteroloncentration for enhanced and intensive management are

4 mmol/L and <3 mmol/L, respectively, consistent withther lipid treatment guidelines [14,15,97,98]. An alternativelobal therapeutic target is a 40% reduction in LDL-holesterol [12,37,64b]. For highest risk FH with diabetes,
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8

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G.F. Watts et al. / Atherosclero

besity or metabolic syndrome and elevated triglycerides>2.0 mmol/L), an apoB target of <1.1 g/L may be used17a,58], noting that there are no published guidelines onhe use of apoB or non-HDL cholesterol in children [97,98].

.3. Pharmacotherapy

The therapeutic targets of LDL-cholesterol in this ageroup may be attained with a fat modified diet and a statin97,98], but the addition of ezetimibe [98,197,198] or a bile-cid sequestrant [98,153,199] may be required. In Australianly fluvastatin, pravastatin and simvastatin are registeredith the Therapeutic Goods Administration (TGA) for use

n adolescents and children older than 10 years [200]; thesetatins should be initiated at the lowest recommended dose,hich should be up-titrated according to cholesterol response

nd tolerability. Simvastatin and pravastatin have been showno improve arterial function and carotid atherosclerosis,espectively, in children with FH [104,201]. The efficacy inowering cholesterol and the short-term safety of more potenttatins, such as atorvastatin and rosuvastatin, has been con-rmed in children with FH [202,203]. Both of these statinsave been approved by the US Food and Drug Administra-ion (FDA) for use in children with FH aged 10 years andbove. Ezetimibe is TGA registered for use in adolescentsnd children older than 10 years [200], with no require-ent for dose adjustment. Bile-acid sequestrants can affect

he absorption of folate and fat soluble vitamins [153], andppropriate supplementation will be required with longererm use of these agents in children. Colesevelam is the

ost tolerable form of these agents [182,199], but is not yetegistered for use in Australasia or New Zealand. Bile-acidequestrants should be taken with meals and gastrointestinalide-effects minimised by increasing fluid and fibre intake153]. Niacin may be indicated for selected patients withomozygous or compound heterozygous FH [98], as wells for heterozygous FH patients with very high Lp(a) and aery early family history of CHD [75]. Niacin should oth-rwise rarely be used to treat paediatric FH owing to poorolerability and concerns about increased risk of glucosentolerance, myopathy, hyperuricaemia and hepatitis [98].y contrast, fibrates are relatively safe and well tolerated

n children, but are rarely indicated except in the treat-ent of FH patients with significant hypertriglyceridaemia

>4 mmol/L) or with a homozygous phenotype [14,97,98].s with fibrates, higher doses of supplemental omega-3 fatty

cid ethyl ester may also be very rarely indicated for patientsith severe hypertriglyceridaemia to prevent acute pancreati-

is [14,161]. Omega-3 fatty acid ethyl ester may also improverterial function in children with FH [204]. The recommenda-ions for monitoring drug safety and tolerability in paediatricatients are generally similar to adult FH, but special require-

ents are noted below and in Fig. 6. More systematically

ollected long-tem safety data are required on the use oftatins and other lipid-regulating agents in paediatric FH205].

o[fc

plements 12 (2011) 221–263 237

.4. Assessing atherosclerosis

CUS, with specific measurement of CIMT and the detec-ion of early plaques, may be useful in assessing therogression of early carotid atherosclerosis and hence in risktratification of children [78,122,206]. Longitudinal data iniverse populations support lowering hypercholesterolaemian children with FH from the age of at least 10 years [206].US could be carried out every two years in moderate riskH and annually in high risk FH. These intervals are onlyguide and should be revised according to clinical context

nd available resources. Evidence of an increase in CIMT,r development of early atherosclerotic plaques, would be anndication for intensifying treatment in moderate and highisk cases of FH [183] (see Fig. 5). CUS should be carriedut by a fully credentialled vascular imaging service andIMT estimated employing well validated edge-detection

oftware [82,122]; this facility may not be routinely avail-ble to many clinics and consequentially other paediatricuidelines do not specifically recommend use of CUS in man-ging FH [64a,b]. Imaging protocols need to be standardisednd age- and sex-specific reference data for CIMT employed82,122]. Contemporary CTCA and calcium scoring shouldot at present be undertaken in children owing to the radi-tion doses involved. Uncontrolled dyslipidaemias in youngdulthood predicts coronary calcium in middle-aged [207].e do not consider that serial measurement of the ankle-

rachial index plays a role in the management of childhoodr adolescent FH, except in very high risk cases includingomozygous patients. Measurement of endothelial function,ith flow mediated dilatation of the brachial artery, is atresent considered a research tool that is not ready for rou-ine clinical practice [122]. Children with a family historyf CHD in early adulthood will require non-invasive testingor CHD [13,97] and referral to a paediatric cardiologist isdvised [110]. For patients with homozygous, or compoundeterozygous FH on LDL-apheresis, regular echocardiogra-hy of the aortic valve and aortic root, with estimation of theortic valve gradient, is recommended [95,97]. These specialases of very high risk FH should be managed jointly with aaediatric cardiologist.

.5. Clinical monitoring and continuity of care

Recommendations for the follow-up of children and ado-escents with FH are broadly similar to adults [14,15,97,98].owever, certain issues require specific attention and review

ntervals may not need to be as frequent as in adults. Drugolerability, interactions and safety need careful surveillance97,98,153,156,163,165]. All children and adolescents ontatins require monitoring of physical growth and puber-al development, as well as when indicated plasma levels

f hepatic aminotransferases, creatine kinase and creatinine97,98]. Before commencing statin therapy in adolescentemales, specific advice should be given regarding contra-eptive choices and the potential risk to the foetus should
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9

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38 G.F. Watts et al. / Atherosclero

hey fall pregnant while on medication [186]. These issueshould be considered at each review. Adolescence is an oppor-une time to evaluate each patient’s understanding of FHnd provide age-appropriate education as required. Impor-ant issues that should be addressed include: the significancef the autosomal inheritance pattern of FH, with potentialffspring having a 50% chance of inheriting the condition;he value of maintaining a healthy lifestyle; the importance ofdhering to the medication prescribed and attending appoint-ents for clinical review. Adherence to medical management

s a challenge for many individuals with chronic conditionsnd can be a particular issue in adolescence [170,208]. Fam-ly counselling and medication support systems, includingurse or pharmacist co-ordinated programs, to ensure adher-nce with therapy may be useful, particularly in higher riskatients [166,167,170]. Enrolling the assistance of person-el skilled in managing adolescent problems may be useful209]. Pharmacists may be utilised for monitoring adherencend flagging non-adherence to medication in the intervalsetween clinical reviews, as well as for directly improvingdherence to medication [166,168]. All children and ado-escents with FH should be reviewed at least yearly in apecialist clinic. Highest risk patients should be reviewedt least every 6 months and homozygotes on LDL-apheresisore frequently [95,97,210]. Patients who are well controlled

n stable treatment could be managed in primary or sharedare. Appropriate clinical pathways should be developed forransitioning and transferring adolescent patients with FHrom paediatric to adult clinical care services [211].

. LDL-apheresis and radical therapy for FH

LDL-apheresis is a radical form of treatment for FHhat entails the extracorporeal removal of apoB-containingipoproteins from the circulation [212,213]. Its use in treatingevere FH is supported by published international guidelines13,95,214–217] and evidence that LDL-apheresis improvesHD outcomes, progression of atherosclerosis and aorticbrosis, endothelial function and coagulation [212,218,219].

.1. Indications, patient selection and targets

LDL-apheresis is indicated for patients with homozy-ous or compound heterozygous FH, as well as for patientsith heterozygous FH with documented CHD who are

efractory to pharmacotherapy [95,216]. FH patients withery high plasma Lp(a) levels may also benefit fromDL-apheresis [75,217]. Untreated patients with a homozy-ous phenotype typically have plasma LDL-cholesterol12 mmol/L and should be treated with maximally toleratedharmacotherapy for at least 6 months before considering

DL-apheresis [95,220]. Untreated heterozygous patients

ypically have plasma LDL-cholesterol from 5 to 12 mmol/L95] and may have true non-responsiveness or intoleranceo cholesterol lowering pharmacotherapy. The recommended

aoLp

plements 12 (2011) 221–263

DL-cholesterol thresholds for selecting patients for aphere-is in Fig. 7 are only an approximate guide and should beodified according to clinical context; an alternative selec-

ion criterion could be a <50% reduction in LDL-cholesteroln maximal pharmacotherapy for both homozygous and het-rozygous patients.

To be suitable for LDL-apheresis patients must be psy-hologically and clinically stable and be committed to thereatment. Haemorrhagic diatheses and hypersensitivity toeparin are contra-indications. Clinical assessment shouldnclude baseline echocardiogram for aortic stenosis [215].atients unsuitable for LDL-apheresis must continue diet andedication. LDL-apheresis is an efficacious, well tolerated

nd safe treatment for children with severe FH and may beommenced after the age of 5 years in affected individuals95,97,210]. It should also be considered for pregnant womenith uncontrolled FH and stable CHD [221,222].

.2. Methods for apheresis

There are five apheresis methods that are selective forDL: membrane differential filtration, immunoadsorption,eparin-induced LDL precipitation, dextran sulphate LDLdsorption and haemoperfusion with direct LDL adsorption95,212,216,217]. All are comparable at acutely loweringDL-cholesterol by 50–70% following a single treatment.lasma exchange (or centrifugal plasma apheresis) may alsoe used, but its major disadvantage is that it is not selective forDL. The choice of method will depend on local expertisend resources. Treatment should be carried out in collabo-ation with a specialty experienced in apheresis, such as aransfusion medicine service, with whom close communi-ation is mandatory. Plasmapheresis and probably cascadeltration should be available via all transfusion medicineervices. A dedicated, fully resourced LDL-apheresis unithould also have a variety of methods of apheresis that cane tailored to maximise efficacy and tolerability in individ-al patients [223]. Vascular access is achieved using bilateralntecubital vein cannulation, but a long-term arteriovenoushunt or central venous catheter may be required. Antico-gulation with heparin and citrate is required. Typically,–6 L exchanges of plasma are carried out for 2–4 h weekly,iweekly or longer according to therapeutic response.

.3. Monitoring therapy

The efficacy, safety and tolerability of LDL-apheresisust be monitored at each treatment and the regimen reg-

lated accordingly [215]. The frequency of LDL-apheresishould be adjusted to achieve a time-average plasmaDL-cholesterol concentration between LDL-apheresis

herapy of 6.5 mmol/L and 2.5 mmol/L for homozygotes

nd heterozygotes, respectively (Fig. 7); a mean reductionf >65% in plasma LDL-cholesterol concentration betweenDL-apheresis relative to no form of treatment is anotherossible target. To achieve these targets will usually require
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G.F. Watts et al. / Atherosclerosis Supplements 12 (2011) 221–263 239

Diet and maximal drug therapy

Homozygous or compound heterozygous FH

Heterozygous FH with documented CHD

No No

LDL-C >5 mmol/L

Assess suitability for LDL-apheresis

Liaise with transfusion service to select LDL-apheresis method,

regimen and set efficacy and safety parameters

Apherese 1.5 – 2 plasma volumes for 2 – 4 hours every 2 –

3 weeks, continue statins and other drugs, avoid ACE inhibitors

Review efficacy, tolerability and safety of apheresis at each

treatment

Review adherence and tolerability

LDL-C >7 mmol/L

Therapeutic target Time average

LDL-C <6.5 mmol/L

Revise regimen and method of apheresis; consider need for liver

transplantation

Consider need and suitabilityfor liver transplantation,

enrolment in clinical trial of new treatments, or applying

via special access scheme for drugs in development for FH

Diet and maximal drug therapy

Review adherence and tolerability

Consider enrolment in clinical trial of new treatments or applying via special access scheme for drugs in development for FH

Yes

Not Suitable Homozygous or compound

heterozygous FH

Not SuitableHeterozygous FH

Suitable

Homozygous or compound heterozygous FH

Heterozygous FH with documented CHD

Therapeutic target Time average

LDL-C <2.5 mmol/L

s and ra

aesuctaoeausr

wLidlas

pc

Fig. 7. LDL-apheresi

n acute reduction of ≥70% in LDL-cholesterol duringach procedure. Statins should be continued since theylow the post-exchange rebound in LDL-cholesterol, butse of angiotensin converting enzyme (ACE) inhibitors areontra-indicated with most systems because of a poten-ial bradykinin reaction; [95,217] angiotensin II receptorntagonists are suitable alternatives. The overall incidencef clinical side effects (including hypotension, vasovagalpisodes, symptomatic hypocalcaemia and anaemia) duringpheresis is less than 5%; if present, these may be corrected

sing standard medical therapy. Non-specific symptomsuch as nausea, fatigue, dyspnoea and abdominal painespond to temporary discontinuation of therapy. Patients

tpc

dical therapy for FH.

ho are persistently intolerant of a particular method ofDL-apheresis should be trialled on an alternative method,

ncluding plasma exchange if required [212]. Because of theemands of treatment, psychological status and quality ofife should be monitored in all patients. Accordingly, patientsnd parents of affected children undergoing LDL-apheresishould be offered psychological counselling when indicated.

The long-term efficacy of treatment in homozygousatients should be assessed about every 2 years using CUS forarotid atherosclerosis load, and echocardiography for aor-

ic valve and root involvement, proceeding to stress ECG andossibly coronary angiography, if there is evidence of signifi-ant progression of disease [13,78,215,224]. In heterozygous
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40 G.F. Watts et al. / Atherosclero

atients on LDL-apheresis CUS and exercise testing shouldlso be employed at suitable intervals to monitor progressionf atherosclerosis [13,183,215]. Many patients undergoingDL-apheresis will need to be jointly managed with adultr paediatric cardiologists [215,224] and appropriate lines ofommunication should be established.

.4. Cost considerations

Besides the complexities of the treatment, the main barriero using LDL-apheresis is the financial cost. It is estimatedhat on average each procedure costs AU$2200–2600, so thennual cost of a bi-weekly cycle is approximately AU$53,00095]. This is comparable to haemodialysis, but in absoluteerms would be less than 1% of the national expenditure onaemodialysis. LDL-apheresis is underutilised in Australia.ealth insurance providers, Medicare and tertiary hospitals

hould support it as a routine service for patients with severeorms of FH.

.5. Other therapeutic options

As shown in Fig. 7, homozygous patients who are notuitable for LDL-apheresis should be considered for liverransplantation [225,226] or enrollment in clinical trials ofovel cholesterol lowering treatments [227], such as apoB-ntisense oligonucleotide therapy and proprotein convertaseubtilisin/kexin type 9 (PCSK9) inhibitors [228,229]. Alter-atively, these new treatments could be made available toatients on a compassionate basis via a special access scheme.oronary artery bypass surgery and/or aortic valve replace-ent should be considered prior to liver transplantation

ccording to pre-operative cardiac investigations [215,224].atients with heterozygous FH who are not suitable for LDL-pheresis should also be considered for enrollment in clinicalrials of new cholesterol lowering treatments [228,229], or anpplication should be made via a special access scheme forrugs in development for FH. Partial ileal bypass should beonsidered in heterozygous FH patients who are intolerantf or refractory to pharmacotherapy, noting both the bene-ts and risks of this surgical procedure [230,231]. There isery limited experience in Australasia with liver transplan-ation for severe FH. Portocaval shunting carries a high riskf encephalopathy and has now been superseded by LDL-pheresis and liver transplantation; its use in homozygous FHay, however, be considered in countries where newer andore expensive treatments are not available [220]. Finally,

here may be a role in the future for gene therapy in treatingevere FH [232].

0. Cascade screening: testing and risk notification

f families

It is well accepted that the most cost-effective approacho detecting new cases of FH is family cascade screening

mtad

plements 12 (2011) 221–263

f close relatives using a genotypic or phenotypic strategy4,10,31,65,233–236]. Genetic testing of an at-risk individ-al within a family is often referred to as ‘predictive testing’237]; predictive testing on the basis of a known pathogenicenetic variant (i.e. a mutation) is more accurate than predic-ive testing based on an individual’s clinical phenotype alone,nd this also applies to FH [7,8,66]. In a condition like FH,n which the phenotype almost always expresses as hyperc-olesterolaemia, the descriptor ‘predictive’ could be replacedy ‘presymptomatic’ or ‘diagnostic’ to describe genetic test-ng [237]. However, because ‘predictive’ describes a moreeneral context and is more widely accepted in clinical genet-cs it is also used in this document when referring to geneticesting of relatives for FH. Screening for FH using the clinicalhenotype alone is a form of ‘diagnostic’ testing, particu-arly when assessment provides a definite outcome, as in anndividual with, for example, a DLCNS > 8 [8,34,44].

0.1. Risk notification

Integral to effective and ethical cascade screening is riskotification [7,8,119,120]. Risk notification is the process ofnforming relatives that (1) they are at risk of FH, (2) thathis may have implications for their health, and (3) that clin-cal and genetic testing (if applicable) is available to clarifyf they do or do not have FH. Fig. 8 provides recommen-ations, based on expert guidelines and position papers, forndertaking the process of cascade screening whether using aenotypic or phenotypic approach [8,113,119,120,238–240].undamental ethical principles of autonomy, beneficence,on-maleficence and justice are central to this process. Healthlliteracy is not uncommon in individuals in the communitynd must be carefully considered and addressed [87,88,173].

0.1.1. Contacting and informing familiesThe general protocol for cascade screening should begin

y contacting first and then second degree relatives, notinghat cases so detected will then become probands for risk noti-cation of their own first and second degree relatives [6–9].typical pedigree tree showing the autosomal dominant pat-

ern of inheritance of FH (clinical phenotype expressed) andhe yield from cascade screening is shown in Appendix 6.ulturally sensitive strategies may be required when dealingith some ethnic groups [1,241]. Approaching and liaisingith community leaders early on is advised to facilitate riskotification and predictive testing occurring in a culturallyppropriate way.

The index case should be invited to discuss family riskotification with the clinician or nurse, who will construct aamily pedigree and identify first and second degree relativesho should initially be offered testing for FH. Use of a pedi-ree drawing tool [242] and a fully integrated information

anagement system [243] is strongly recommended to facili-

ate family assessment, work planning, multidisciplinary carend communication of results to individuals tested and theiroctors [9,12,25]. Appendix 7 shows a pedigree tree for

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G.F. Watts et al. / Atherosclerosis Supplements 12 (2011) 221–263 241

No

No response

Family member consents to screening Family member does not consent to screening

Accept decision not to be tested

But encourage risk notification of their 1st and

2nd degree relatives

Arrange appointment with FH serviceAs per local protocol

Index case consents to risk notification of relatives

Is there a particularly strong clinical

indication for risk notifying relatives without consent?

YesSend 2nd letter / Telephone

family member

No response

Risk notificationSend letter and information sheet to family member and / or give to index

case to distribute to relatives

ResponseReceived by

clinical service

No

notifica

anaiiawibd

etsabafenctctm[

wtt

tatoCdo

appic[cbfEic

vtp[[f

Fig. 8. Cascade screening: risk

n actual family with FH, illustrating the autosomal domi-ant inheritance of hypercholesterolaemia, premature CVDnd a missense mutation in the LDL-receptor gene. Draw-ng and detailing such pedigrees is essential for effectivemplementation of cascade screening, including appropri-te risk notification. Clinical genetics services often haveell-established protocols for managing families with famil-

al disorders and, where possible, cascade screening shoulde implemented as a joint collaborative effort of the lipidisorders and clinical genetics services [12,26,115,121,237].

Comprehensive and well validated resources should bemployed and developed to accurately convey informationo relatives [12,25,37]. The method for risk notificationhould be tailored to each family, so that relatives may bepproached either by the index case, the clinical service, ory both [6,8,119,120,244]. Understanding the reasons whyn index case may not consent to cascade screening of otheramily members is important to provide re-assurance andncourage rapport and disclosure [37,245,246]. Dual riskotification may be the best option: notification by the clini-al service alone may lead to relatives feeling aggrieved thathey were not informed by their related index case; notifi-ation by the index case alone may be taken less seriouslyhan notification by a medical service. Genetic counsellors

ust be involved when sensitive family issues are identified8,25,110,121,238].

Index cases who contact relatives should be provided with

ritten information which explains the predictive/diagnostic

esting process and implications, and be encouraged to givehis to their relatives [12,25,37]. Information and letters sent

aPp

tion and approaching families.

o relatives should be written in general language to avoidlarm and concern, while emphasizing the voluntary nature ofesting [119,120], and the health consequences of a diagnosisf FH being missed when a person decides not to be tested.ommunications should also emphasise the health gains ofiagnosis and treatment [12,25], as well as the benefits forffspring who may have FH.

In the absence of a response to the first letter, it may beppropriate to make a second approach by letter or tele-hone call to the family member [37,244]. However, thisolicy should be discussed with relevant local experts on eth-cal and risk management matters. Multiple contact attemptsould constitute a violation of privacy for some individuals119,120] and may be counter-productive to the process ofascade screening. Reasons why a relative does not wish toe tested for FH should be explicitly documented [84,86] toacilitate, where indicated, re-approaching them in the future.lectronic methods of communication (e.g. e-mail) could be

nvestigated for their value in enhancing risk notification andascade screening for FH.

Prior to testing, family members should be given detailederbal and written information about FH. Written informa-ion should again be in clear, non-technical language andreferably accompanied by simplified but explicit diagrams25,37,119]. Health illiteracy should always be addressed87,88,173]. Family members who consent to being testedor FH should be offered a standard plasma lipid profile and

genetic test if the mutation is known in the index case.atients without GPs should be encouraged to visit one asart of the FH counselling process. With consent from the

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42 G.F. Watts et al. / Atherosclero

ndividual, the outcome of phenotypic or genetic testing forH should be communicated to their GP and other relevantedical services.

0.2. Co-ordination of cascade screening

Different care pathways may be employed for screen-ng individuals for FH, depending on circumstances andesources [7,25,26,37]. Family members may be tested via theipid disorders clinic, genetic services or their GP. Dependingn knowledge and experience, pre-test counselling may beest undertaken by a specialist medical practitioner, geneticounsellor or specialist nurse. FH specialist nurses shouldave some competency in genetic counselling [121,247], thiseing particularly relevant for efficiently co-ordinating anutreach screening service. Phenotypic screening for FH maye carried out by GPs, noting that use of clinical criterialone may result in the underdiagnosis of FH in a primaryare setting [248]. However, GPs should not directly requestenetic testing without appropriate specialist training. Theuture should see more education of GPs in medical geneticsnd this will increase their role in predictive testing of fam-lies for FH [249]. This is particularly important in primaryare, given the greater accuracy of genetic testing over clini-al criteria in diagnosing FH. FH services that do not employealth practitioners with formal counselling training couldonsider referral to a clinical genetics service for counselling26,121,237].

Referral to genetic services should also be consideredhen contemplating genetic testing in children or adolescents

115,238], and when sensitive family issues are identified.nquiries concerning PND and PGD for FH are a special

ndication for referral to a clinical genetics service [192,193].enetic counsellors should be involved in training staff caring

or FH patients and in supporting GPs and outreach services7,8,12,26,121].

Cascade screening for FH is best carried out ando-ordinated centrally by a specialist service ideally run col-aboratively by lipid disorders and clinical genetics services12,26,71,115,121,237]. However, relatives may choose toave genetic or phenotypic testing in a primary care setting.n this case, close liaison and communication will be requiredith their GP. If genetic testing is required, support in pre-

est counselling should be given by a clinical geneticist or aenetic counsellor [115,121,237]. If the diagnosis of FH isonfirmed genetically, or is highly suspected on phenotypicriteria, GPs should refer the individual to a specialised FHervice for advice on treatment and follow-up [12,25,26,38].

0.3. Risk notification without consent

If the index case does not consent to risk notification of

amily members it is important to explore and understandhe rationale behind this [83,245], and in particular the pre-ailing family dynamics [83,119,120,246]. By maintainingrofessionalism and continuing to patiently and judiciously

tbae

plements 12 (2011) 221–263

xplore and resolve key issues [120,246], an effective rapportan often be built with the index case sufficient to revisit theption of risk notification after 6–12 months, or sometimesonger. Referral to a genetic counsellor [121] and involvementf a patient support group for appropriate lay counselling250–252] may all assist in achieving acceptance of riskotification.

Recent amendments to the Commonwealth’s Privacy Act988 in Australia allow private health practitioners “to use orisclose patients’ genetic information, whether or not theyive consent, in circumstances where there is reasonableelief that doing so is necessary to lessen or prevent a serioushreat to the life, health or safety of their genetic relatives.”Privacy Legislation Amendment Act 2006 (Cth) amendmento the Privacy Act 1988 (Cth)) [253]. This amendment of therivacy Act only applies to the private sector [253]. Prac-

itioners employed in the public sector need to refer to therivacy legislation in their own state or jurisdiction concern-ng the release of information without the consent of theatient [246]. The difference in the privacy laws for pub-ic and private patients in Australia is an issue that requiresesolution.

A decision to risk notify without the consent of thendex case should therefore be very carefully and judiciouslyaken with attention to privacy legislation in different states,ocal health service protocols and the NHMRC guidelines239,246]. Health professionals must understand the geneticasis for FH, take reasonable steps to obtain patient consentnd document the process fully before considering risk noti-cation of relatives without consent. The recent NHMRCuidelines [239] are not prescriptive and we urge cautionhen independently approaching relatives. Nevertheless, FH

s a potentially lethal condition and if there are high risk fea-ures in the family, such as a strong history of prematureVD, contacting of relatives without consent is justifiable,s indicated in Fig. 8. Refusal of an index patient with FHo share genetic information with relatives is unusual, buthen present poses a significant challenge to risk notification

nd cascade screening [119,120,246]. Best clinical practicemplies that disclosure of information without consent duringascade screening for FH should be viewed as a last resort246]. However, when information is disclosed, it should behe minimum required, avoid identifying the patient or theirack of consent, and should only be made available to family

embers no further removed than third-degree relatives.

0.4. Insurance cover and genetic testing

All individuals with potential FH should be made awarend understand the implications of genetic testing for cer-ain types of insurance cover [254–256]. Family history ofVD, a clinical diagnosis of FH, plasma level of choles-

erol and predictive genetic information could all potentiallye employed by the insurance industry to make decisionsbout exclusion of specific conditions from insurance cov-rage and setting an insurance policy premium [256–258].

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n Australia premiums for insurance products which includeover for life (term), disability/income protection, trauma,usiness and bank loans (but not private health insurance)re calculated according to the present and past health of thepplicant, their family history and any known genetic testesult(s) in the applicant, their siblings or their parents [256].owever, insurers who are members of the Financial Servicesouncil have agreed that they will not ask an individual who

s applying for insurance coverage to have a genetic test ift has not been done already [259]. Similar conditions applyt present in New Zealand. Better control of hypercholes-erolaemia with statins in FH is likely to lower insuranceremiums [258].

1. Genetic testing of families

FH is an autosomal dominantly inherited disorder, affectedndividuals having a 50% chance of passing the causative

utation to each offspring [1–3]. If a pathogenic mutations identified in an affected index case, predictive testing ofelatives using genetic testing is a cost-effective, accurate andcceptable approach for detecting new cases [66,234,260].owever, genetic mutations may not be detected in at least0% of patients in whom a clinical diagnosis of FH can beonfidently made [3,23,45,66,261,262]. Thus, in a smaller butignificant proportion of families diagnostic testing should bearried out phenotypically [12,38,68].

One of the main advantages of predictive genetic testings its ability to definitively confirm or exclude a diagnosis ofH in the relatives of an index case [66]. Fig. 9 outlines therocess to be followed when employing predictive geneticesting in cascade screening. The majority of cases of FH areue to mutations in the LDLR, APOB and PCSK9 genes [1–3].iven that a mutation is known to be present in the index case,enetic testing should be offered to all at-risk family membersho present for predictive testing [8,66]. Because of ethical

ssues involved in genetically testing minors [114,115], it isest and usual practice to first genetically test a phenotypi-ally affected parent. When no consent, or assent, is obtainedor genetic testing, the diagnosis of FH can be made pheno-ypically according to the DLCNS in an adult [8,34,38,44]r to the plasma LDL-cholesterol concentration in a child46,48,97] (Fig. 9).

Genetic testing of families for FH should be co-ordinatedy a specialist ideally run collaboratively by a lipid dis-rder clinic and clinical genetics [12,26,71,115,121,237].he psychological consequences of genetic testing must bearefully considered and appropriate education and coun-elling offered in all individuals [8,66,84,86,115,121,237].btaining informed consent, or parental consent plus child

ssent in the case of testing children, requires pre-test coun-

elling concerning the implications of the result [115,238].his is particularly important in children because the future

mplications are more difficult to anticipate and the consentrocess via parents or guardians is less direct [115]. Age

itaa

plements 12 (2011) 221–263 243

nd developmentally appropriate assent/consent should bebtained from children and adolescents prior to testing andnformation should be tailored to the child’s level of compre-ension [115,121] and the parent’s level of literacy [87,88].enetic testing in children can be carried out without invasiveenepuncture, for example by using a buccal swab specimen263].

If the family mutation is not identified by a predictiveenetic test, the diagnosis of FH can be excluded in that fam-ly member. However, there may be some situations when theamily member has significant hypercholesterolaemia (andphenotype strongly suggestive of FH) but does not carry

he pathogenic mutation identified in other family members.aving excluded secondary causes of hypercholesterolaemia

14,15], it may then be appropriate to do a full ‘FH muta-ion search’ in that individual, including investigation of thextended pedigree. This mutation search should be precededy appropriate pre-test counselling [115,121,237].

As indicated earlier, when one or both members of a cou-le has FH and there are concerns about having an affectedhild, referral for specialist genetic counselling regardingND and PGD should be considered [192,193]. Couples opt-

ng for pre-natal testing should be seen prior to conception.GD will require detailed assessment by an in vitro fer-

ilization service and a specialised DNA laboratory [264].ervices providing PGD must comply with established lab-ratory requirements and relevant State and Commonwealthegislation [265].

2. Laboratory approach to genetic testing for FH

2.1. Background

Laboratories providing medical genetic testing inustralia must comply with requirements developed by

he National Pathology Accreditation Advisory CouncilNPAAC) [264]. Compliance with these standards is reg-larly assessed in a joint program managed by the Royalollege of Pathologists of Australasia (RCPA) and theational Association of Testing Authorities (NATA) [266].PAAC requirements address the need for appropriate labo-

atory resources, governance and supervision, training andontinuing accreditation of staff, and appropriate clinicaliaison. Medical testing that may be the basis for clinicalecision-making must be performed in an accredited labora-ory.

Accordingly, genetic testing for FH should be carried outn a NATA/RCPA accredited laboratory [266] that will issueesults to the requesting doctor. The process of screeningor genetic mutations, confirming identified genetic variants,ssessing pathogenicity and issuing a formal report should

deally not take longer than three months. Supported by fur-her evaluation of its cost-effectiveness, we recommend thatn application is made for genetic testing for FH to be listeds an MBS item.
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244 G.F. Watts et al. / Atherosclerosis Supplements 12 (2011) 221–263

Proband or relative carrying gene variant of known pathogenicity (i.e. mutation)

Counseling of family membersPsychological / genetic / lay counseling. Clinical

genetics and paediatric review if required. Informed consent / assent sought

No assent/consent to genetic testing

Assent/consentto genetic testing

Genetic testing Phenotypic testing

Family mutation not present

Family mutation present

Discuss risk notification of close

relativesFigure 8

Offer phenotypic or genetic testing to

relatives

If still concerned about possibility of

FH, continue to build rapport and

reconsider genetic testing

FH unlikelyProbable to Definite

FH confirmed

FH excluded*

f familie

ai(Infamu[d

FafimaiAgcitgn

cgnAafimonp

bFipggCdbnt

Fig. 9. Genetic testing o

In the present context, a gene variant is defined as an alter-tion in the normal sequence of a gene. Genetic testing of anndex case may fail to identify a variant in the genes testedvariant absent) or it may identify a variant (variant present).dentified variants may have been previously reported or beovel. NATA/RCPA accredited laboratories have processesor assessing the likely significance of an identified gene vari-nt and for classifying the variant as clearly pathogenic (autation), clearly non-pathogenic (a benign variant) or of

ncertain significance (a variant of uncertain significance)264]. The assessment of significance is discussed in moreetail in a later section.

FH has significant locus and allelic heterogeneity, i.e.H is caused by mutations in a number of different genesnd many different pathogenic mutations have been identi-ed in each implicated gene [112,261,267–270]. Thus, theain challenges for genetic testing for FH remain the costs

nd feasibility of testing the large numbers of patients clin-cally diagnosed with or suspected to have the condition.s noted earlier, the likelihood of detecting a pathogenicene variant in an individual suspected of being an indexase is directly proportional to the clinical probability of thatndividual having FH [1,3,66,112,118], as assessed pheno-

ypically by, for example, the DLCNS [34,38,44]. Hence,enetic testing of adults with a phenotypic DLCNS < 3 mayot be cost-effective [38,44].

moh

s. *See text for caveats.

Currently, mutations in three different genes are known toause FH [1,3,66]. A pathogenic mutation in one of theseenes is identified in about 70% of phenotypically defi-ite and 20% of phenotypically probable/possible FH [8,66].bout 95% of the identified mutations are in the LDLR gene

nd 4–5% in the APOB gene. Mutations are seldom identi-ed in the PCSK9 gene. Detection of a mutation in a familyember allows the definite diagnosis of FH to be made, as

utlined in Fig. 9. However, failure to detect a mutation doesot exclude a diagnosis of FH, particularly if the clinicalhenotype is highly suggestive of FH [12,37,66].

There are several reasons why mutations might note detected in patients with a high clinical suspicion ofH [1,3,66,262]. First, the present laboratory technology

s not sufficiently sensitive nor specific for detecting allathogenic mutations. Second, FH is genetically hetero-eneous (caused by mutations in a number of differentenes) and not all causative genes have been identified.learly, genetic testing is not helpful in families with FHue to mutations in unknown genes as these genes cannote included in genetic testing. Third, the index case mayot have ‘true’ FH, since a family history of hypercholes-erolaemia and early CVD is not sufficiently specific for

aking the diagnosis of FH; some of these patients may havether genetic disorders [66], particularly familial combinedyperlipidaemia [271,272].

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Most diagnostic laboratories undertaking FH genetic test-ng will utilize a number of mutation detection methods66]. These may include: (1) nucleotide sequence analysisf each of the exons and flanking splice regions (exon byxon sequence analysis, EBESA) of the LDLR, APOB andCSK9 genes [3,112,261,270,273]; (2) methods that detect

arge duplications and deletions in the LDLR gene based onultiplex Ligation Probe Amplification (MLPA) [274,275];

3) methods that screen for specific mutations in the LDLR,POB and PCSK9 genes [260,276–280].

2.2. A protocol for genetic testing

Complete screening for all known FH-causing genes isxpensive and time consuming [66]. A laboratory protocolhat is likely to be cost-effective for genetic testing (searchingor a mutation) an ‘index case’ considered to have phenotypicH is proposed in Fig. 10. This protocol could form the basisf a standardised, national protocol for genetic testing forH. We emphasize that laboratories may choose to vary thepproach to genetic testing for FH shown in Fig. 10 accordingo the available resources: for example, laboratories may opto proceed directly to DNA sequencing for an LDL-receptor

utation of all test samples received [3,66,112,261,270,273].e recognize that technological advances in genetic testing

nd the discovery of new genes causing FH will necessitateppropriate modification to the protocol [66,110] in Fig. 10.

The steps proposed in Fig. 10 are as follows: (1) individ-als with a DLCNS < 3 (unlikely FH) are not offered geneticesting, because the likelihood of identifying a pathogenicene variant is low and with currently available technologyot cost-effective; (2) genetic testing for FH is offered toll individuals with a DLCNS ≥ 3, which includes all pos-ible, probable and definite phenotypic cases of FH; (3) forndividuals with a score of 3–5 (possible FH), to maximizeost-effectiveness, testing could be limited to sequential test-ng using: Screen 1, employing commercial methods thatarget specific mutations; [260,280–282] Screen 2, employ-ng MLPA [274,275,283] (Fig. 10); (4) individuals with aLCNS ≥ 6 could be offered more comprehensive sequen-

ial testing: Screen 1, employing commercial methods thatarget specific mutations; [250,270–272] Screen 2, employ-ng MLPA; [274,275,283] Screen 3, employing sequentialBESA of at least the LDLR gene (the recommended order

or EBESA is LDLR > ABOB > PCSK9) [3,66] (Fig. 10). Allesults from commercial chip or kit technology that identifygene variant as being present should be confirmed using

he second validated testing method. This is a requirement ofood laboratory practice [264,266] and relates to the potentialnalytical errors with the commercial methods.

It should be noted that the protocol in Fig. 10 refers toiagnostic testing (mutation searching) for FH in a pheno-

ypically defined ‘index case’. In a predictive testing settinghe laboratory will already know the mutation in the indexase and there is no need to screen for mutations other thanirectly testing for the one identified in the family [8,66].

iTp

plements 12 (2011) 221–263 245

o increase acceptability, genetic testing for FH in childrenhould be available using DNA extracted from either bloodr buccal samples [263].

2.3. Assessing the significance of gene variantsetected in index cases

Various pieces of evidence are used to determine the sig-ificance of an identified gene variant [264] and this clearlylso applies to genetic testing for FH [66]. These include theublished literature (including database entries), epidemio-ogic studies, in vitro and (preferably) in vivo demonstrationhat the variant causes a functional abnormality, and in silicomolecular software) assessment [284,285]. For practical rea-ons, in silico assessment coupled with search of the literaturend established databases [267,286] are the usual primaryources used for assessing the significance of a gene variant.nfortunately, published literature may in general contain

rrors, so careful assessment is required. In silico data arelso variable in quality, particularly when it comes to assess-ng splicing mutations [287]. Patients and their managinglinicians should also be aware that a laboratory interpretsach genetic test result in accordance with the best informa-ion available at the time of the test, and that it is possiblehat new information may emerge which results in a changen how a genetic test is interpreted.

Particular care needs to be taken when classifying a geneariant as a pathogenic mutation, since it may be used inredictive genetic testing of asymptomatic individuals. If aariant of uncertain significance (either previously reportedr novel) is detected, it is not appropriate to regard it asathogenic. Clinical management of the individual and theiramily should be based on the plasma lipid phenotype (andther clinical criteria) and not on the genetic test result12,13,26,38].

Fig. 11 provides a general approach for assessing andeporting the outcome of genetic testing for FH in a phe-otypically defined index case. The significance of a geneariant should be assessed as recommended above. The for-al laboratory report of the FH variant/mutation should detail

he standardised methods used and the evidence supportinghe classification [264]. If a pathogenic variant (mutation) isdentified the report should also make the recommendationhat further relatives be genetically screened for FH [264].

here no gene variant or pathogenic mutation is detected,he report should include the caveat that such a result doesot definitively exclude the diagnosis of FH.

3. The web of care for FH: the optimal serviceodel

Fig. 12 encapsulates the multiple components that shoulddeally comprise a comprehensive healthcare model for FH.he recommendations and MoC described in this documentrovide detailed pathways for the principal clinical compo-

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246 G.F. Watts et al. / Atherosclerosis Supplements 12 (2011) 221–263

Dutch Lipid Clinic Score > 3 in Index CasePrioritise >8 definite, 6 – 8 probable, 3 – 5 possible

Screen 1Commercial method for detecting specific pathogenic variants

Screen 1Commercial method for detecting specific pathogenic variants

Definite and Probable FH

Possible FH

Variant absent Variant absent

Screen 2MLPA ‡

Screen 2MLPA ‡

Variant absent

Screen 3Comprehensive exon by exon sequencing

Variant presentConfirm by

sequencing and / or appropriate

alternative method if available

Issue report

Consents to Genetic testing

Issue report Include caveat that

FH due to rare gene variants/mutations cannot be excluded

Variant absent

Variant presentAssess significance of gene variant (See

Figure 11)

Fig. 10. A laboratory protocol for genetic testing an ‘Index Case’ considered to have phenotypic FH. ‡MLPA – Multiplex Ligation Probe Amplification.

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G.F. Watts et al. / Atherosclerosis Supplements 12 (2011) 221–263 247

‘Index case’ consents to genetic test

Genetic testing as per Figure 10

Assess significance of variant *

Variant of uncertain significance

Pathogenic variant (mutation)

Issue Reportwith caveat that FH cannot be excluded

Benign variant

Issue ReportWith appropriate recommendation for

testing relatives (See Figure 8 & 9)

No variant detectedVariant detected

enetic t

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Fig. 11. Assessment and reporting of the outcome of g

ents shown in Fig. 12. This MoC represents an overarchingystem that significantly extends and updates other publishedervice models [12,13,25–28].

3.1. Focus, aims and objectives

Health service provision should focus on three main areas:atient care services, laboratory services, and research andlinical audit. The aims, objectives, expectations, outcomesnd key performance indicators for each of these shoulde clearly identified and documented. Research and auditgendas for FH have been published elsewhere [12,37,288].are pathways for the seamless flow of patients between

elevant specialties and other health providers, including pri-ary care, should be specified and developed. The general

im of clinical care should be to identify, assess, man-ge and treat children and adults with FH to the highestevel of clinical excellence. The primary therapeutic objec-ive is not only to reduce cardiovascular risk related tolevation in plasma LDL-cholesterol [1,2,12,13], but alsoo treat other cardiovascular risk factors including obe-

ity, hypertension, type 2 diabetes, metabolic syndromend smoking [17a,32,33,43,55–57,74,125,127]; psycholog-cal and psychosocial factors must also be addressed8,83–86,124,136,289]. A major long-term objective of

potp

esting in an ‘Index Case’. *See text for further details.

ealth service provision for FH should be to identify mosteople with the condition in the community, aiming tochieve realistic targets in given time-frame, e.g. 30% detec-ion rate after 3 years of service implementation.

3.2. Co-ordination and integration of care

To achieve the clinical aims and objectives of the health-are model for FH requires a dedicated multidisciplinaryervice [110] that is best co-ordinated by a lipid disorderslinic [26,71]. This service should be managed by suitablyredentialled personnel operating out of departments of inter-al medicine, endocrinology or cardiology. Physicians whoegularly manage patients with FH should have specialistraining in clinical lipidology and competencies in the pre-ention of CVD [26,72], and be credentialled to supervise theraining of junior physicians. Uncomplicated patients coulde referred back to their GPs for long-term care but should beeviewed annually in a lipid disorders clinic. Existing clinicsay need to up-skill their approaches to cascade screening

or FH [9,290]. GPs should actively seek index cases in their

ractice by recognizing the importance of the family historyf CVD and marked hypercholesterolaemia [68]. However,he optimal method for systematic identification of FH inrimary care needs to be defined and a specific MoC devised
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248 G.F. Watts et al. / Atherosclerosis Supplements 12 (2011) 221–263

Specialist & Primary Care Physicians, Physicians-

in-training. Training,

Credentialing,Professional development

Specialised Adult-Paediatric Service

Family Clinics

Structured Clinical Management Program

Shared between specialist clinics and primary care

Administrative, Secretarial & Information Technology

ServicesSupport for Clinics, Outreach

services and FH Registry

Specialist Nurses & Allied Health Support

Pharmacy / Medication supportNutrition

PsychologyExercise

Lay counsellingTraining & Professional

Development

Cardiac & Imaging Facilities

Stress testingUltrasonography

EchocardiographyCardiac CT Scanning

Medical Laboratory Services

Routine and Specialising in lipids and

lipoproteins

Clinical Genetics, Family & Genetic

CounsellingDefined clinical

pathways

Clinical LiaisonCardiology

Cardiac RehabilitationCardiothoracic Surgery

Stroke unitVascular Surgery

Patient & Family Support Groups

Consultation,Education,Advocacy

Structured Education Program

For community and health providers, multidisciplinary case conferences, journal

clubs, accreditation

Audit & Research Program

Registry, Clinical & basic Science, Clinical trials, Epidemiology &

Health Economics

Specialised Laboratory for

Genetic Testing Service and

research

Influencers & StakeholdersDepartment of Health

Policy MakersHealth Networks

Atherosclerosis AssociationFamily Support Group

National Heart Foundation

or FH: t

abdewcihbabictacsbossecasig

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I

wf

Fig. 12. The web of care f

nd tested. Decentralization of the management of FH shoulde a major objective of future developments. As FH servicesevelop further in the community, the specific roles of gen-ral practice and other members of the primary care teamill become clearer and inform future MoCs. Outreach lipid

linics in the community would be a useful first step, but clin-cal protocols need developing and testing. Telehealth mayave a role in the management of FH in Australia, [291]ut its cost-effectiveness remains to be evaluated. Patientsged <16 years should be seen in a paediatric clinic runy a specialist in metabolic medicine; dietetic counsellings essential in this age group. An integrated adult–paediatriclinic may be useful for certain families. Nurses should berained in managing patients and families with FH, and prefer-bly have some experience in the prevention of CVD andompetency in genetic counselling [72,110,121]. Cascadecreening, including risk notification, should be co-ordinatedy a health practitioner or specialised nurse working outf a central FH clinic or a clinical genetics service, andhould include (where required) provision of an outreachervice. With appropriate specialist training, nurses couldffectively administer genetic counselling [121]. Beyond cas-ade screening, FH nurses may be involved in several otherreas. These include the clinical care of patients, medication

upport, education and training, audit and research, enhanc-ng multidisciplinary links and working with a patient supportroup; nurse co-ordinated clinics and multidisciplinary case

tcbb

he optimal service model.

iscussions should be integral to the service. By example,he effectiveness of nurse-led interventions has been demon-trated for management of non-cholesterol CVD risk factors,uch as hypertension and diabetes [292,293]. The role ofhe dietician is essential, for dietary management and weightegulation is a cornerstone of treatment [14–17a,32,33,133].dditional input from health and adolescent psychologists

nd exercise physiologists [136,209] may be required in spe-ial circumstances. Health literacy needs to be appropriatelyddressed [172,173]. Suitably trained nurses may have theest overall skills for co-ordinating the workflow necessaryor the optimal care of patients with FH. Clinical pharma-ists can have a special role in managing non-adherence toedication and in liaising with GPs [166–168]. The use of

ay counselling [252], particularly in patients who lack under-tanding of their condition and are non-adherent to treatment,s another promising resource that requires evaluating in theontext of FH.

nter-specialty linksBeyond the lipid disorders clinic strong links are essential

ith departments of clinical genetics in respect of the need foramily and genetic counselling [66,110,115,121,237], par-

icularly during the cascade screening process. A geneticsentred service may be appropriate for cascade screening,ut it may be more effective if genetic counsellors areased in and work out of the lipid disorders clinic. Not all
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amilies or patients with FH require genetic counselling,ut some exposure and basic training in the principles ofenetic counselling is important for both physicians andurses who manage FH [72,121]. The general skills of aenetic counsellor may, on the other hand, be also moreroadly utilised in an FH service when dealing with cer-ain clinical issues [121], such as adherence with medication170,208].

Many patients with FH may be diagnosed amongst thosettending departments of cardiology, cardiothoracic surgery,troke medicine and vascular surgery [22,38,60], and closeiaison with all these is essential. At least one in twenty peopleith premature CVD cared for by these specialties may haveH [22,38]. A structured system for the routine screening andccurate detection of FH in these clinical settings is stronglyecommended.

An FH service should also have close links with labora-ory medicine and access to routine and specialised laboratorynd clinical tests [71]. These include routine lipids andipoproteins, apoB, Lp(a), homocysteine and high sensitivity-reactive protein (CRP). Genetic testing should be carriedut in a NATA/RCPA accredited laboratory [266] that cancreen for all the major genes that cause FH. These laborato-ies must comply with the standards set by the NPAAC [264].he clinical assessment of patients with FH also involvesccess to cardiac and imaging facilities, including treadmillesting, myocardial perfusion scanning, CUS and echocar-iography [13,76–78]. Close links with the department ofardiology are essential for the referral of symptomatic, origh risk cases, that will require coronary angiography andnvasive interventions.

Links with a transfusion medicine unit is important fordministering and monitoring LDL-apheresis [215–217].DL-apheresis should be offered to all patients with homozy-ous (or compound heterozygous) FH and to heterozygotesho are not at target LDL-cholesterol and have progressiveHD or are intolerant of cholesterol lowering medications

215–217].

3.3. Administrative and information technologyupport

The clinical service should be underpinned by appropriatedministrative and secretarial support [25,26]. A specialisedatabase for storing clinical and family data and informa-ion technology support systems are essential for effectiverovision of services [25]. Computerised programs shouldave several key capabilities for dealing with pedigree draw-ng, work flow management, production of template letters,rchiving data, clinical audits and research. Other impor-ant requirements include a high level of data confidentialitynd security, and compatibility with other healthcare soft-

are systems. Favourable experience with one such softwarerogram [243] has been reported [294], but requires fur-her evaluation in full clinical service mode. A secure, highuality software system is required to establish and develop

bci[

plements 12 (2011) 221–263 249

national registry of FH patients that links family mem-ers across states. The International Cholesterol FoundationInterChol) is an integrator and facilitator of communi-ations between clinical services worldwide; its webpagewww.interchol.org/links) provides links to several interna-ional bodies that deal with FH. Details of websites that coulde useful for clinical services caring for FH are given inppendix 8.

3.4. Clinical governance: audit, education, training

Efficient clinical governance is fundamental to all aspectsf an FH service [37,295]. Clinical governance shouldntail holding regular multidisciplinary conferences, focus-ng on the quality and efficiency of all aspects of theervice. Retrospective and ongoing clinical audits are essen-ial for monitoring the efficiency of service delivery. Aell-designed and comprehensive clinical registry can pro-ide invaluable information for improving the quality ofare for FH [296], consistent with requirements for allnherited cardiovascular conditions [110,297]. Continuingducation and training of all healthcare providers is essen-ial for professional development and service improvement.egular journal clubs can inform on recent advances in

he diagnosis and care of patients with FH. Essential forlinical governance is a clearly identifiable managementtructure headed by a medical director and a clinic or nurseanager [71]. Standard operating procedures, staff respon-

ibilities and credentialling, documentation and essentialesources must all be clearly defined. Marketing the clinic,ncreasing the number of referrals, devising an effective busi-ess plan and generating income for the service, as wells promoting collaborative research, are all highly desir-ble requirements for developing an effective clinic serviceor FH.

3.5. Patient and family support groups

Every effort should be made to initiate and sustain anctive association for patients and families affected by FHia a support group [250,251]. This forum provides a net-ork for individuals and families to form an advocacy group

o develop and promote services within the community, asell as a nucleus for learning and sharing information that

s critical for the detection, management and reduction ofisk in families with FH. The perceptions and views ofatients and their families are clearly important in devel-ping and improving health services for FH [110]. Patientupport for families and the raising of community and gov-rnment awareness about FH is an important function of theupport groups. A national patient support organisation couldfford the best means of establishing a national registry of

oth patients and services, including clinics undertaking cas-ade screening. Such an FH registry could be incorporatednto the Australian National Genetic Heart Disease Registry297].
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50 G.F. Watts et al. / Atherosclero

3.6. Into the future: chronic care model,ommissioning, evaluation

Future design and development of health provision forH needs to take place within the framework of thehronic Care Model [298], and hence in a positive pol-

cy environment [299]. This will require interacting andstablishing partnerships with a wide spectrum of stake-olders, including patient support groups, heart foundationsnd related non-government organizations, health networks,ealth economists, policy makers and health ministers. Inime, the care of FH could be integrated into national and stateervices for inherited cardiovascular conditions [110]. Theres a major need to increase public and health provider aware-ess of FH through continuing education programs [288].cademic health service systems may be ideally suited for

o-ordinating and integrating the health care of FH and othernherited cardiovascular disorders, but these need to be devel-ped in Australia [300]. Publishing guidance on the care ofH is one thing, but effectively implementing recommen-ations is another, a gap well emphasised by a recent reportrom the UK [301]. Addressing the national and internationalaps in the management of hypercholesterolaemia at a com-unity level will benefit the detection and care of patientsith FH [174–178]. Programs that are successful in deliver-

ng high quality services for FH also have an obligation indvising on and supporting the development of such servicest a national and international level. We emphasize that anptimal FH service provides a classical paradigm and stan-ard for the detection and treatment of other disorders thatause premature atherosclerosis that need attention in theirwn right. Finally, we strongly recommend that our MoC forH be commissioned and incorporated into healthcare deliv-ry and prevention strategies in our community with a veryigh level of priority. It should also be subjected to regularuditing and health economic evaluation, thereby allowinghe MoC to grow into a standard of excellence for the care ofll patients with FH.

ppendix 1. FH Australasia Network Consensusroup and Process

hair

Winthrop Prof. Gerald F. Watts (Lipid Disorders Clinic,etabolic Research Centre and Department of Internaledicine, Royal Perth Hospital, University of Westernustralia, Perth, Western Australia).

riting committee

Winthrop Prof. Gerald F. Watts, Associate Prof. DavidSullivan (Department of Biochemistry and Lipid Clinic,

oyal Prince Alfred Hospital, University of Sydney), Dricola Poplawski (SA Clinical Genetics Service, Women’s

PDMH

plements 12 (2011) 221–263

nd Children’s Hospital, North Adelaide, and Genetics andolecular Pathology Directorate, SA Pathology (WCH site),orth Adelaide), Prof. Frank van Bockxmeer (Cardiovascu-

ar Genetics Laboratory, Royal Perth Hospital, University ofestern Australia).

teering committee

Winthrop Prof. Gerald F. Watts, Associate Prof. Davidullivan, Prof. Frank M. van Bockxmeer, Prof. Ian Hamilton-raig (Preventive Cardiology and Lipid Clinic, Gold Coastospital, Griffith University, Queensland), Prof. Peter M.lifton (Baker IDI Heart and Diabetes Institute, Southustralia), Associate Prof. Richard O’Brien (University ofelbourne, Victoria), Dr Warrick Bishop (Department ofardiology, Calvary Cardiac Centre, Calvary Health Care,asmania), Prof. Peter George (Biochemistry and Pathology,anterbury Health Laboratories, Lipid Clinic, Christchurchospital, Christchurch, New Zealand).

ontributors

Prof Phillip J. Barter (Director, Heart Research Institute,ydney), Dr Timothy Bates (Lipid Disorders Clinic, Inter-al Medicine, Royal Perth Hospital), Clinical Prof. John. Burnett (Core Clinical Pathology & Biochemistry, Path-est Laboratory Medicine WA, Lipid Disorders Clinic,oyal Perth Hospital, University of Western Australia), Dr

ohn Coakley (Paediatrics and Biochemistry, The Children’sospital Westmead, Sydney), Prof. Patricia Davidson (Car-iovascular and Chronic Care, Curtin University, and Nursingesearch, St Vincent’s Hospital, Sydney), Winthrop Prof.

on Emery (School of Primary, Aboriginal and Rural Healthare, University of Western Australia), Dr Andrew Mar-

in (Department of Paediatric and Adolescent Medicine,rincess Margaret Hospital, Perth), Dr Waleed Farid (FHatient Support Group of Western Australia), Ms Lucindareeman (Department of Molecular and Clinical Genet-

cs, Royal Prince Alfred Hospital, Sydney), Prof. Elizabetheelhoed (Health Economics and Policy, School of Popula-

ion Health, University of Western Australia), Ms Amandauniper (Office of Population Health Genomics, Depart-ent of Health, Government of Western Australia), Drlexa Kidd (Clinical Genetics, Canterbury Health Labora-

ories, Christchurch Hospital, New Zealand), Associate Prof.aram Kostner (Cardiac Imaging Group, Department of Car-iology, Mater Hospital, University of Queensland), Prof.nes Krass (Pharmacy Practice, Faculty of Pharmacy, Uni-ersity of Sydney), Mr Michael Livingston (Internationalholesterol Foundation, Sutton-Courtney, Oxfordshire, UK),s Suzy Maxwell (Office of Population Health Genomics,epartment of Health, Government of Western Australia),

rof. Peter O’Leary (Office of Population Health Genomics,epartment of Health, Government of Western Australia),s Amal Owaimrin (Department of Dietetics, Familialypercholesterolaemia Clinical Support Service, Auburn
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G.F. Watts et al. / Atherosclero

ospital, Sydney), Emeritus Prof. Trevor Redgrave (Lipidisorders Clinic, Royal Perth Hospital, Department of Phys-

ology, School of Medicine and Pharmacology, Universityf Western Australia), Ms Nicola Reid (Cardiovascular Pre-ention and Lipid Disorders Clinic, Christchurch Hospital,ew Zealand), Ms Lynda Southwell (FH Western Australia,oyal Perth Hospital, University of Western Australia), Drraeme Suthers (SA Clinical Genetics Service, GeneticsMolecular Pathology Directorate, Women’s & Children’s

ospital, Adelaide), Prof. Andrew Tonkin (Cardiovascularesearch Unit, Monash University, Melbourne, Victoria),rof. Simon Towler (Chief Medical Officer, Health Networks,epartment of Health, Government of Western Australia),rof. Ronald Trent (Department of Molecular & Clini-al Genetics, Royal Prince Alfred Hospital, University ofydney).

onsensus process

The Steering Committee met three times in Adelaide,ydney and Brisbane, organised and chaired by GFW. A vari-ble number of other contributors attended these meetings orere invited to comment on evolving drafts of the paper via

mail or telephone. The first meeting discussed a prelimi-ary model of care for FH from Western Australia funded byhe Australia Better Health Initiative and based on materialnitially developed by FH Australasia (GFW, DS). The sec-nd meeting reviewed the core evidence on FH (publishedn the English language on PubMed and webaddresses) andiscussed and critically commented on a first draft of theonsensus paper written by GFW. GFW, DS, NP and FvBhen re-drafted sections of the paper, after reviewing furtheromments by all members of the group. At the third meeting,he Steering Committee re-examined a pre-final draft of theaper and reached consensus on the principal recommenda-ions of the model of care. GFW then prepared a final draft ofhe paper. All members approved the final document beforeubmission.

unding

The meetings of the FH Australasia Network Consen-us Group were supported by educational grants to theustralian Atherosclerosis Society from Pfizer, Abbott,stra-Zeneca and MSD. These companies were not present

t the Consensus Panel meetings and made no contri-utions to the design, content or final approval of theocument.

isclosures

Some members of the Consensus Group have received

ecture honoraria, consultancy fees, and/or research fund-ng from: Pfizer (GFW, DS, AT, TB, WB, IHC, PD, PMC,JB, ROB), Astra Zeneca (GFW, DS, AT, TB, WB, IHC,R, PMC, ROB), MSD (GFW, DS, AT, TB, WB, IHC, NR,

plements 12 (2011) 221–263 251

D, PJB), Abbott (GFW, DS, AT, TB, IHC, PJB, ROB),oehringer-Ingelheim (GFW, AT, TB, WB, ROB), Sanofi-ventis (GFW, DS, TB, WB, IHC), Novartis (GFW, AT,

HC, PJB, ROB), GlaxoWellcome (GFW, IHC, ROB), Bris-ol Myers Squibb (AT, ROB), Servier (TB, WB, IHC, PMC,OB), Roche (GFW, PJB, DS).

cknowledgements

We thank Jennifer Seabrook from Meetings First andhe Australian Atherosclerosis Society for co-ordinating the

eetings of the FH Australasia Network Consensus Group.

ppendix 2. Dutch Lipid Clinic Network Criteria forH

Dutch Lipid Clinic Network Criteria for making a diag-osis of FH in adults [34].

Criteria Score

Family historyFirst degree relative with known premature coronary

and/or vascular disease (Men <55 years, Females <60years), OR

1

First degree relative with known LDL-cholesterol>95th percentile for age and sex

First degree relative with tendon xanthomata and/orarcus cornealis, OR

2

Children aged <18 years with LDL-cholesterol>95th percentile for age and sex

Clinical historyPatient with premature coronary artery disease (age

as above)2

Patient with premature cerebral or peripheral vasculardisease (age as above)

1

Physical examinationTendon xanthomata 6Arcus cornealis at age <45 years 4

LDL-cholesterol (mmol/L)LDL-C ≥8.5 8LDL-C 6.5–8.4 5LDL-C 5.0–6.4 3LDL-C 4.0–4.9 1

DNA analysis—functional mutation in the LDLR,APOB or PCSK9 gene

8

Stratification Total score

Definite FH >8

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52 G.F. Watts et al. / Atherosclerosis Supplements 12 (2011) 221–263

ppendix 3. Simon Broome Criteria for FH

imon Broome Criteria for the diagnosis of FH [12,41].

Definite FHRaised cholesterol:In children (<16years): total cholesterol > 6.7 mmol/L OR LDL-C > 4.0 mmol/LIn adults (>16 years): Total cholesterol > 7.5 mmol/L OR LDL-C > 4.9 mmol/LANDTendon xanthomata in the patient or in a first or second degree relativeORDNA based evidence of a LDL-receptor, familial defective apo B-100 or PCSK9 mutation

Possible FHRaised cholesterol:In children (<16 years): total cholesterol > 6.7 mmol/L OR LDL-C > 4.0 mmol/LIn adults (> 16 years): total cholesterol > 7.5 mmol/L OR LDL-C > 4.9 mmol/LAND one of the following:Family history of premature myocardial infarctionMI at <50 years in second degree,MI at <60 years in first degree relatives.ORFamily history of raised cholesterolIn adult (>16 years), first or second degree relatives: total cholesterol >7.5 mmol/LIn child (<16 years), first degree relatives: total cholesterol >6.7 mmol/L

ppendix 4. MEDPED Criteria for FH

EDPED Criteria for the diagnosis of FH [42].

Age (years) Total and LDL-cholesterol (mmol/L) criteria for Diagnosing Probable Heterozygous Familial Hypercholesterolaemia (FH)

1st degree relative with FHTC (LDL-C)

2nd degree relative with FHTC (LDL-C)

3rd degree relative with FHTC (LDL-C)

General populationTC (LDL-C)

<20 5.7 (4.0) 5.9 (4.3) 6.2 (4.4) 7.0 (5.2)

20–29 6.2 (4.4) 6.5 (4.6) 6.7 (4.8) 7.5 (5.7)30–39 7.0 (4.9) 7.2 (5.2) 7.5 (5.4) 8.8 (6.2)≥40 7.5 (5.3) 7.8 (5.6) 8.0 (5.8) 9.3 (6.7)

C = total cholesterol.

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ppendix 5. Typical examination features of FH

Illustrations showing typical examination features of FH

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ppendix 6. Hypothetical Pedigree

Female Male

FH phenotype expressed; note vertical transmission of phenotype over each succeeding generation

Index case

I

II

III

Hypothetical pedigree tree depicting dominantly inherited phenotype in FH.

ppendix 7. ‘Real case’ Pedigree

TC 9.2 Age 38

High cholesterol 3 x CABG

Age 46

High cholesterol

High cholesterol & Angina Fatal MI age 50 High cholesterol & Angina Fatal MI age 60

Fatal MI age 50

Cholesterol unknown

1 x CABG Fatal MI age 50

Cholesterol unknown

High cholesterol 2 x CABG, 2 x MI

Age 38

TC 10.2 Age 28

High cholesterol Age 26

Cholesterol unknown

2 x CABG Fatal MI age 40

4 x CABG By age 40

TC 9.8 Age 24

Cholesterol unknown

Cholesterol unknown

South African Died age 50

Index case

Carriers of LDL-R gene mutation exhibiting the FH clinical phenotype

I

II

V

Male Female

Pedigree of actual family with a mutation in the LDL-receptor gene. This pedigree illustrates the dominant inheritance ofypercholesterolaemia and premature CHD in a family with FH (LDL-R gene = c.681C > G (Asp227glu) in exon 4). TC = totallasma cholesterol (mmol/L), MI = Myocardial Infarction, CABG = Coronary Artery Bypass Grafting.

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ppendix 8. Selected websites for clinical services

Selected websites that may be useful for clinical servicesaring for patients with FH.

• International Cholesterol Foundationwww.interchol.orgNew foundation, formed from the merger ofMEDPED-International and HEART-EU, that has a strong focus onFH and provides useful links to international websites of interest topatients, researchers and health professionals.• HEART UKwww.heartuk.org.ukLeading UK cholesterol charity that provides extensive resourcesfor health professionals, patients and families on all aspects of thedetection and management of FH.• Public Health Genomics Foundation, UKwww.phgfoundation.orgInternational foundation that publishes authoritative reports on therole of advances in genomics in health care, and has a particularlyexcellent document on services for inherited cardiovascularconditions.• National Heart Foundation, Australiawww.heartfoundation.org.auLeading Australian charity that provides a wealth of resources forhealth professionals and the community on all aspects of primaryand secondary prevention of cardiovascular disease.• British Heart Foundationwww.bhf.org.ukLeading British foundation provides excellent resources for healthprofessionals and patients, including informative videos on a widespectrum of conditions and risk factors.• Centre for Genetics Education, New South Wales Healthwww.genetics.com.auEducational arm of NSW Genetic Service that provides geneticinformation of individuals and families affected by geneticconditions and health professionals who work with them. Activitiesinclude workshops and training programs.• Human Genetics Society of Australasiawww.hgsa.org.auPremier Australasian society that provides educational materials,training, polices, guidelines and position statements on all aspectsof human genetics.• Lipids Online, Baylor College of Medicinewww.lipidsonline.orgEstablished on-line facility, coordinated by Baylor College ofMedicine (Houston, Texas, USA), providing resources (slides,visual meetings, commentaries), for clinicians, researches andeducators on several aspects of dyslipidaemia, atherosclerosis andcardiovascular disease.• National Lipids Association (NLA), USAwww.lipid.orgUS based multidisciplinary specialty society providing education,training, guidelines and position statements on all aspects of thedetection and management of dyslipidaemia and related disorders.• Learn Your Lipids, NLAwww.learnyourlipids.comInformation for patients with dyslipidaemia, including FH, asprovided by the foundation of the National lipid Association in theUS.• New Zealand Guidelines Groupwww.nzgg.org.nz

New Zealand group of experts that specialises in developing andimplementing guidelines for best clinical practice; excellentresources on the assessment and management of all cardiovascularrisk factors.

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• Rational Assessment of Drugs and Research (RADAR),National Prescribing Service (NPS)www.nps.org.au/health professionals/publications/nps radarEvidence based assessment of all new drugs, PBS listings and latestresearch for health professionals provided by the NPS, anindependent organisation funded by the Australian GovernmentDepartment of Health and Ageing.• Make Early Diagnosis Prevent Early Death (MEDPED) FHwww.medped.orgUS based website of the original MEDPED Project coordinated bythe University of Utah School of Medicine (Salt Lake City, UT,USA) focusing on all aspects of the management of FH, includingeducation of patients and families and the first attempt atestablishing a US registry.• Office of Population Genomics, FH Pilot Cascade ScreeningProgram, Western Australiawww.genomics.health.wa.gov.au/fhState funded office that aims to translate genomic knowledge intohealth benefits for WA health; resources provided relevant to thedetection and management of FH• Wales FH Testing Service, Cardiff Universitywww.fhwales.co.ukLeading FH service in the UK that provides useful information andresources for clinical practice, including activities of FH FamilyForum.• FH Support Group of Western Australiawww.fhfamilysupportgroup.websyte.com.auWebsite of the first support group in Australia for families with FH;provides relevant information, communication and support services.• FH Guideline Implementation Team Toolkitwww.heartuk.org.uk/FHToolkitInvaluable resource for implementing the seminal NICE guideline71 on identification and management of FH.• FH Australasia Network, Australian Atherosclerosis Societywww.athero.org.au/FHWebsite of the FH Australasian Network, updated in 2011

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