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Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine University of Cape Town & Groote Schuur Hospital
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Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Dec 24, 2015

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Page 1: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Treating hepatitis B and C (in South Africa )

Dr Mark Sonderup Division of Hepatology and Department of Medicine

University of Cape Town & Groote Schuur Hospital

Page 2: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Treatment of Hepatitis B

Page 3: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Evolution of HBV Therapy

Interferon alfa-2b

Lamivudine

Adefovir

Peginterferon alfa-2a

Telbivudine

Tenofovir

1990 1998 2002 2005 2006 2008

Entecavir

Page 4: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Phase Immune Tolerant

Immune Clearance

Immune control

Reactivation

LiverMinimal

inflammation and fibrosis

Chronic activeinflammation

Mild hepatitis and minimal

fibrosis

Active inflammation

Yim HJ, et al. Hepatology. 2006;43:S173-S181.Optimal treatment times

Anti-HBeAg

HBV DNA

ALT activity

Current Understanding of HBV Infection

4 Phases of Chronic HBV Infection

HBeAg

Page 5: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

REVEAL Study: Risk of HCC and Cirrhosis according to baseline HBV viral load

HBV DNA, copies/mL

HCC

(% p

er Y

r)[1

]

1. Chen CJ, et al. JAMA. 2006;295:65-73. 2. Iloeje UH, et al. Gastroenterology. 2006;130:678-686.

< 300300-999910,000-99,999100,000-999,999≥ 1 million

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0

Cirr

hosi

s (%

per

Yr)

[2]

HBV DNA, copies/mL

< 300300-999910,000-99,999100,000-999,999≥ 1 million

3.0

2.5

2.0

1.5

1.0

0.5

0

85 % HBeAg neg

Page 6: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

HCC Incidence in TDF Studies Lower Than Predicted by REACH-B Risk Model

• Analysis of actual HCC incidence vs REACH-B predictions in 152 cirrhotic, 482 noncirrhotic pts treated with TDF for 8 yrs in studies 102 (HBeAg-) and 103 (HBeAg+)

• Noncirrhotics: 8 observed cases vs 18 predicted over 7 yrs

– Significant difference from Wk 240: 55% reduction in HCC

• Cirrhotics: observed cases matched prediction over first 4 yrs; no observed cases in last 3 yrs

• Combined analysis: 50% lower HCC incidence at Yr 7

Kim WR, et al. EASL 2013. Abstract 43.

Cum

ulati

ve H

CC C

ases

(n)

Wk

0 48 96 144 192 240 288 3360

5

10

15

20

25

30

PredictedObserved

1st significantdifference

SIR = 0.50* (95% CI: 0.294-

0.837)

*Statistically significant.

Combined Analysis (Noncirrhotic and Cirrhotic)

Page 7: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Liver Society Guidelines*

HBeAg Positive HBeAg Negative

HBV DNA, IU/mL

ALT HBV DNA, IU/mL

ALT

EASL 2009[1] > 2000 > ULN† > 2000 > ULN†

APASL 2008[2] ≥ 20,000 > 2 x ULN† ≥ 2000 > 2 x ULN†

AASLD 2009[3] > 20,000> 2 x ULN‡ or

(+) biopsy≥ 20,000**

≥ 2 x ULN‡ or(+) biopsy

1. EASL. J Hepatol. 2009;50:227-242.2. Liaw YF, et al. Hepatol Int. 2008;3:263-283.3. Lok ASF, McMahon BJ. Hepatology. 2009;50:661-662.

Treatment Criteria for Chronic Hepatitis BHBeAg pos and HBeAg neg Disease

Recommended HBV DNA and ALT levels ± Liver Biopsy

*Although ALT and HBV DNA are primary tests used to determine treatment candidacy, the levels of elevation that warrant consideration of treatment are not universally agreed upon.†Laboratory normal.‡30 U/L for men and 19 U/L for women.**In patients older than 40 yrs of age, 2000 IU/mL should be considered as a cutoff for treatment.

Page 8: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.
Page 9: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

NIH Guidelines: Indications for HBV Treatment

Patients for Whom Therapy Is Indicated

Patients who have

- Acute liver failure

- Decompensated cirrhosis

- Cirrhosis or advanced fibrosis and HBV DNA in serum

- Patients who will be receiving cancer chemotherapy or immunosuppressive therapy

Adapted from Sorrell MF, et al. Ann Intern Med. 2009;150:104-110.

Page 10: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

NIH Guidelines: Indications for HBV Treatment

Adapted from Sorrell MF, et al. Ann Intern Med. 2009;150:104-110.

Patients for Whom Therapy May Be Indicated• Active liver disease without advanced fibrosis or cirrhosis

- HBeAg pos or HBeAg neg chronic hepatitis B

Patients for Whom Immediate Therapy Is Not Routinely Indicated

• Immune-tolerant phase (HBeAg pos, high serum HBV DNA levels, normal ALT or little activity on liver biopsy)

• Inactive carrier or immune control phase (HBeAg neg, low or undetectable levels of serum HBV DNA, and persistently normal ALT)

• Occult HBV infection (serum HBV DNA pos, IgG core pos, HBsAg neg)

Page 11: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Two Treatment strategies for CHB

Interferon-based therapy

• Dual Antiviral and immunomodulatory activity

• Finite course of treatment

• Aim for sustained off-treatment immune control ( HBsAg +, HBeAg - )

through dual mode of action

Nucleos(t)ide analogue therapy

• Antiviral activity

• Long-term (potentially indefinite) treatment

• Aim for on-treatment viral suppression ( HBV DNA -)

• Maintained through continuous antiviral therapy • Suppression of replication to undetectable levels to avoid resistance

Page 12: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

HBeAg Positive Disease

End-points of treatment

• Ideal end-point sAg loss sAb

• Durable eAg loss and seroconversion

• Durable suppression of HBV DNA to low or undetectable

Page 13: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

HBeAg loss and seroconversion in HBeAg+ Patients after 1 Yr of Treatment

Out

com

e (%

)

Lok AS, et al. Hepatology. 2007;45:507-539. Lau GK, et al. N Engl J Med. 2005;352:2682-2695. Marcellin P, et al. N Engl J Med. 2003;348:808-816. Chang TT, et al. N Engl J Med. 2006;354:1001-1010. Lai CL, et al. N Engl J Med. 2007;357:2576-2588. Marcellin P, et al. N Engl J Med. 2008;359:2442-2455. Janssen HL, et al. Lancet. 2005;365;123-129.

HBeAg Loss HBeAg Seroconversion100

80

60

40

20

0

17-3221 18 22 12-18 21 21

100

80

60

40

20

0

33 30

-Not head-to-head trials; different patient populations and trial designshead trials; different patient populations and trial designs

LAM ETV TDF Peg-IFN

LAM ADV ETV TDF Peg-IFN

Page 14: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Lowest HBsAg levels at week 12 are associated with highest rate of sustained immune control

P<0.0001 for <1500 IU/mL vs higher levels

HBsAg at week 12 (IU/mL)

HB

eAg

se

roco

nve

rsio

n6

mo

nth

s p

ost

-tre

atm

ent

(%)

60

50

40

30

20

10

0Low

(<1500)Medium

(1500–20,000)High

(>20,000)

57%

32%

16%

51/90 72/223 14/86

HBeAg positive patients treated with PEG-IFN-2a +/- lamivudine for 48 weeks

Piratvisuth et al. APASL 2010

Page 15: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

HBeAg Negative Disease

End-points of Treatment

• Ideal end-point sAg loss sAb

• Durable suppression of HBV DNA to low or undetectable levels

• NUC therapy long-term as relapse common after stopping treatment

Page 16: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

LAM TDF Peg-IFN

*By PCR based assay (LLD ~ 50 IU/mL) except for some LAM studies.

60-7363

Adapted from Lok AS, et al. Hepatology 2007;45:507-539, Lok AS, et al. Hepatology 2009;50:661-662

93

Virologic response in HBeAg- Patients (Undetectable* HBV DNA at Wk 48-52)

Pat

ien

ts W

ith

Un

det

ecta

ble

H

BV

DN

A (

%)

Not head-to-head trials; different patient populations and trial designs

100

80

60

40

20

0

Page 17: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Undetectable HBV DNA Over Time in HBeAg-Negative Patients

Extended Treatment With Nucleos(t)ide Analogues vs Limited Duration (1 Yr) Peginterferon Treatment

Not head-to-head trials; different patient populations and trial designs

EntecavirTenofovirPeginterferon

Und

etec

tabl

e H

BV D

NA

(%) 93 8791

1 Yr 2 Yrs 3 Yrs

100

80

60

40

20

0

63

15 16

*Single center study.

Page 18: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Lai CL, et al. N Engl J Med. 2006;354:1011-1020. Marcellin P, et al. N Engl J Med. 2008;359:2442-2455. Marcellin P, et al. AASLD 2008. Abstract 146. Marcellin P, et al. APASL 2009. Abstract PE086. Shouval D, et al. J Hepatol. 2009;50:289-295. Marcellin P, et al. AASLD 2009. Abstract 481.

HBsAg Loss Over Time in HBeAg Negative Patients

On Extended Treatment With Nucleos(t)ide Analogues* vs Limited Duration (1 yr) Peginterferon Treatment

Not head-to-head trials; different patient populations and trial designs

Pat

ien

ts (

%)

< 1 04

0

100

80

60

40

20

0< 1

12

NA

EntecavirTenofovirPeginterferon

06

1.0 Yr 1.5-2.0 Yrs 3.0-4.0 Yrs

*With sustained undetectable HBV DNA.

Page 19: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Treatment period

HBsAg, more than HBV DNA, can distinguish between relapsers and responders to PEG-IFN in

HBeAg Negative patients

Moucari et al. Hepatology 2009

Sustained responders (N=12)*

Relapsers (N=18)** Non-responders (N=18)

Treatment period

12 24 48 72 96

1

2

3

4

0

HB

sA

g (

log

IU

/mL)

Time (weeks)0

0

Time (weeks)12 24 48 72 96

1

2

3

4

5

6

7

8

HBV

DN

A (lo

g co

pies

/mL)

0

*HBV DNA undetectable by PCR 1 year post-treatment

**HBV DNA undetectable at EOT but detected in following 24 weeks

Page 20: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

To assess and Rx a patient with chronic HBV in 2013 you need the following as a minimum:

1. ALT/AST2. TBr/albumin/INR3. HBeAg, eAb4. HBV viral load5. US liver6. Exclude HIV/HCV7. Access to TDF [LAM] 8. IFN for selected patients

Page 21: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Treatment of Hepatitis C

Page 22: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Definitions : Virological Response

Rapid virological response (RVR)• Undetectable HCV RNA 4 weeks after initiating treatment

Complete early virological response (cEVR)• Undetectable HCV at 12 weeks of treatment

Sustained virological response (SVR)• Undetectable HCV RNA levels at 24 weeks post-treatment

Zeuzem et al. N Engl J Med. 2000.

Page 23: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

SVR = Viral Cure

1. Swain MG, et al. Gastroenterology. 2010;139:1593-1601. 2. Giannini EG, et al. Aliment Pharmacol Ther. 2010;31:502-508. 3. Maylin S, et al. Gastroenterology. 2008;135:821-829. 4. George SL, et al. Hepatology. 2009;49:729-738.

0

20

40

60

80

100

Duration of Follow-up

Patie

nts

With

SVR

(%)

3.9 yrs(mean)

3.4 yrs(median)

3.3 yrs(median)

5.4 yrs(median)

99[1] 99[2] 100[3] 100[4]

Nearly 100% of patients who achieve SVR remain undetectable during long-term follow-up[1-4]

Page 24: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

At risk 337 261 192 160 124 95 79 49 31Events 0 5 11 16 20 24 25 28 30

At risk 142 76 48 35 25 14 8 6 5Events 0 0 0 0 0 1 1 1 1

At risk 337 256 183 155 121 92 74 44 27Events 0 8 21 24 27 29 31 35 35

At risk 142 76 48 35 25 14 8 6 5Events 0 0 0 0 0 1 1 1 1

Outcomes in advanced fibrosis with/without a SVR

Liver FailureLiver-Related Death

Live

r-Re

late

d D

eath

(%)

Year

50 5-yr occurrence

SVR: 4.4% (CI: 0% to 12.9%)No SVR: 12.9% (CI: 7.7% to 18.0%)

P = .024

Year

5-yr occurrence

SVR: 0%No SVR: 13.3% (CI: 8.4% to 18.2%)

P = .001 (log likelihood)

0 81 2 3 4 5 6 7

Live

r Fai

lure

(%)

50

40

30

20

10

00 1 2 3 4 5 6 7 8

No SVR

SVR

40

30

20

10

0

Veldt BJ, et al. Ann Intern Med. 2007;147:677-684

Page 25: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Discovery of HCV genome

Addition of RBV to IFN alfa improved outcomes

Peg-IFN α plus RBV becomes gold standard

Treatment with IFN alfa for 24 or 48 weeks – 3x weekly dosing – Poor outcomes

Peg-IFN mono – once-weekly dosing

20111989

Evolution of hepatitis C therapy

Page 26: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Results of HCV Rx : overall SVR rates

6

13

41 39

63

0

10

20

30

40

50

60

70

IFN24 wk19981

IFN 48 wk19981

IFN+ RBV

19981,2

PEG-IFN 2000-20023,4,5

PEG-IFN+ RBV

2001-20045,6,7

1. McHutchison et al. N Engl J Med. 1998. 2. Poynard et al. Lancet. 1998. 3. Zeuzem et al.N Engl J Med. 2000. 4. Lindsay et al. Hepatology. 2001. 5. Fried et al. N Engl J Med. 2002.

6. Manns et al. Lancet. 2001. 7. Hadziyannis et al. Ann Intern Med. 2004.

SVR

(%)

Page 27: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Peginterferon α-2a + Ribavirin : SVR According to Genotype

46

76

0

10

20

30

40

50

60

70

80 PegIFN + Ribavirin

Genotype 1 Genotype 2/3

SVR

(%)

Fried et al. N Engl J Med. 2002.

Page 28: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Predicting an SVR

Viral kinetics :Response guided

therapy

Page 29: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

HCV

RN

A (lo

g 10 IU

/mL)

0

1

2

3

4

5

6

7

8

2 log decline

Limit of detection

Early virological response (EVR): HCV RNA ↓ ≥ 2 logs or Undetectable at

Week 12

EVR

66% SVR

SVR

Weeks

PegIFN/RBV

0 4 12 18 24 30 36 42 48 54 60 66 728 78

Page 30: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

86%(n=390)

65%(n=253)

SVR

Overall

14%(n=63)

3% (n=2)

EVR is an essential predictor of achieving SVR: 12-week stopping rule

All patients(n=453)

NPV=97%

EVR*

Yes

No

Early virological response = >2 log10 drop in HCV RNA or undetectable at week 12 Ferenci P, et al.

Page 31: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

2 log decline

Limit of detection

Weeks

HCV

RN

A (lo

g 10 IU

/mL)

RVR

90% SVR

0

1

2

3

4

5

6

7

8

Rapid Virological response (RVR): HCV RNA Undetectable at week 4

SVR

PegIFN/RBV

0 4 12 18 24 30 36 42 48 54 60 66 728 78

Page 32: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

SVR in Patients Who Achieved an RVR Similar Across Genotypes

RVR = HCV RNA negative (<50 IU/mL) at week 4; genotypes 1 and 4, patients were treated for 48 weeks; genotypes 2 and 3 patients were treated for 24 weeks

90 282 257 90

20

40

60

80

100

Geno 1 Geno 2 Geno 3 Geno 4

SVR

(%)

100%86%86%88%

Patients With RVR

n=

Page 33: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

HCV negative at week 4 and 12

eRVR = Extended RVR

Page 34: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

IL28B

Page 35: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

60 M

b

Chromosome 19

A Polymorphism on Chromosome 19 Predicts SVR

Single Nucleotide Polymorphism rs12979860

IL28B gene IFN Lambda-3 gene

3 kb19q13.13

Ge D, et al. Nature. 2009;461:399-401.

Page 36: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Americans Americans

12

3619

50

48

46

38

16

35

0

20

40

60

80

100

European AfricanHispanics

Per

cent

C/CC/TT/T

IL28B rs12979860 polymorphism genotype frequency by population

Ge D, et al. Nature. 2009;461:399-401.

Page 37: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.
Page 38: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

0

20

40

60

80

100

TT CT CC

SVR

(%)

Ge D, et al. Nature. 2009;461:399-401.

n =

Response Rates by IL28B Polymorphism:GT 1 Treated With PegIFN/RBV

Page 39: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

IL28B Genetic Variation and Viral Clearance with PEG/RBV

European Americans African Americans Hispanics0

102030405060708090

35

20 24

40

22

43

80

43

70

TTCTCC

SVR

(% ±

SEM

)

The polymorphism on chromosome 19, rs12979860 (T/T, T/C, or C/C), was strongly associated with SVR in all patient groups.

Ge D, et al. Nature. 2009;461:399-401

Page 40: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

IL28B Polymorphisms and Response to PegIFN/RBV by HCV Genotype

Stättermayer AF, et al. Clin Gastroenterol Hepatol. 2011;9:344-350.

100

80

60

40

20

SVR

(%)

0

41

Genotype 1 Genotype 2/3 Genotype 4

4550

78

2532

CC

CT

TT

8579

88

Page 41: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

• CC IL-28B genotype is the strongest pre-Rx predictor of SVR

(OR 5.2; 95% CI, 4.1-6.7)

Thompson et al., Gastroenterology 2010;139:120-9

Predictive value of IL28B

Page 42: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

IL28B polymorphisms are not predictive in hepatitis C genotype 5

infected South African patients

Mark W. Sonderup1, Wamda Abuelhassan2, C Wendy Spearman1

1. Department of Medicine and Division of Hepatology, Groote Schuur Hospital and University of Cape Town2. Department of Gastroenterology, Chris Hani-Baragwanath Academic Hospital, University of the Witwatersrand , Soweto,

Johannesburg.

63rd Annual Meeting of the American Association for the Study of Liver Diseases, Boston, MA, USA November 9 - 13 2012

Page 43: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Demographic data of treated patients Characteristic N = 32

Male, n (%) 18 (56%)

Age (y) mean ± SD Men Woman

53.2±11.553.4±10.3

Ethnic group — no. (%) Black Caucasian Mixed Ancestry

17 (53%)12 (38%) 3 (9%)

Weight — kg median (range) 80 [53 – 130]

Page 44: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

22

47

31

IL28B genotype – ethnic distribution

CC

CT

TT

12%

41%

47%

Blacks

CCCTTT

33%

58%

8%

Caucasians

CCCTTT

Page 45: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

RVR cEVR SVR0

20

40

60

80

100

62%

100%

78%

%

Treatment outcomes

* lower level of detection of HCV is <15IU/ml# RVR = rapid virological response, cEVR = complete early virological response, SVR = sustained virological response and defined as undetectable HCV RNA at the end of a 24-week follow-up period

Page 46: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

RVR and IL28B polymorphism genotype

IL28B genotype

OR (95% CI) p- value

CC vs. non CC 1.6 (0.3 – 10.3) 0.58

CT vs. non CT 1.4 (0.3 – 5.9) 0.64

TT vs. non TT 0.4 (0.1 – 2.2) 0.33

Page 47: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

SVR and IL28B polymorphism genotype

IL28B genotype

OR (95% CI) p- value

CC vs. non CC 0.6 (0.1 – 4.2) 0.62

CT vs. non CT 2.7 (0.4 – 16.7) 0.28

TT vs. non TT 0.5 (0.1 – 2.9) 0.45

Page 48: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Caucasian Black0

10

20

30

40

50

60

70

80

90

100

58% 59%

p = NS

Influence of ethnicity on achieving a SVR

Page 49: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

SUMMARY : SVR predictive factors

1. Manns MP, et al. Lancet. 2001;358:958-965. 2. Fried MW, et al. N Engl J Med. 2002;347:975-982.3. Hadziyannis SJ, et al. Ann Intern Med. 2004;140:346-355. 4. Nguyen MH, et al. Am J Gastroenterol. 2008;103:1131-1135.

Other factors[1,2,4]

Dose of Peg-IFN Lower body weight (≤ 75 kg)

Dose of RBV Absence of insulin resistance

Female sex Elevated ALT levels (3 x ULN)

Younger age (younger than 40 yrs) Absence of bridging fibrosis or cirrhosis

Ethnicity - non-Black

Major factors[1-3]

Viral genotype (non–genotype 1) Pretreatment HCV RNA

(≤ 600,000 IU/mL)

IL28B allele (C/C vs. T/T) RVR

Page 50: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

The EmpiricPhase

Weisberg IS, Sigal SH, Jacobson IM. Current Hepatitis Reports. 2007;6:75-82.

•Viral kinetics•Optimal dosing•Special populations•Non-responders•Genomics

The Refinement

Phase

1990-2000 2000-2011

The Evolution of HCV Therapy

Page 51: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

DAA – Direct Acting Antivirals:Protease Inhibitors

Page 52: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

HCV structure

Page 53: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

HCV (NS3) Protease Inhibitors

• Two protease inhibitors approved in 2011 for HCV genotype 1

• Telaprevir (Incivo/Incivek) and Boceprevir (Victrelis)

• As triple therapy in combination with pegylated interferon (PEG) and ribavirin (RBV)

Page 54: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

SVR Rates With BOC or TVR + PR According to Treatment History

0

20

40

60

80

100

SVR

(%)

Naive

63-75

Poordad F, et al. N Engl J Med. 2011;364:1195-1206. Jacobson IM, et al. N Engl J Med. 2011;364:2405-2416. Bacon BR, et al. N Engl J Med. 2011;364:1207-1217. Zeuzem S, et al. N Engl J Med. 2011;364:

2417-2428. Bronowicki JP, et al. EASL 2012.

Relapsers69-83

Partial Responders

40-59

NullResponders

29-40

> > >

Page 55: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

SVR Rates With BOC or TVR in GT1 Treatment-Experienced Patients

0

20

40

60

80

100

SVR

(%)

Relapsers[1,2] Partial Responders[1,2]

69-83PegIFN/RBV

1. Bacon BR, et al. N Engl J Med. 2011;364:1207-1217. 2. Zeuzem S, et al. N Engl J Med. 2011;364:2417-2428. 3. Bronowicki JP, et al. EASL 2012. Abstract 11.

NullResponders[2,3]

BOC or TVR + pegIFN/RBV

24-29

40-59

7-15

29-40

5

Page 56: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

PEG/RBV + Telaprevir or BoceprevirSVR: PEG-IFN naïve, GT1a vs. 1b

GT1a GT1b0

102030405060708090

100

GT1a GT1b0

102030405060708090

100

P=PEG-IFN, R=Ribavirin, RGT=Response Guided TherapyT=Telaprevir, B=Boceprevir

Telaprevir – T12PR Boceprevir – BPR RGT

71

79

63

73

Jacobson I, NEJM 2011; 364: 2405Zeuzem S, EASL 2011

Page 57: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

PEG/RBV + TelaprevirGT1, IFN-experienced

F 0-2 F 3 F 4 F 0-2 F 3 F 4 F 0-2 F 3 F 40

10

20

30

40

50

60

70

80

90

100

T12PRPR

Relapser Partial responder Null responder

SV

R (

%)

Zeuzem S, NEJM 2011; 364: 2417

Page 58: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

PEG/RBV + Telaprevir or BoceprevirSVR: GT1, IFN-naïve, IL28B Genotypes

CC CT TT0

102030405060708090

100

CC CT TT0

102030405060708090

P=PEG-IFN, R=Ribavirin, RGT=Response Guided TherapyT=Telaprevir, B=Boceprevir

T12PR vs. PR BPR RGT vs. PR

90

71 73

82

6555

Jacobson I, Poordad F

64

25 23

78

28 27

PR

Page 59: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

• Regimens With 1 DAA + PegIFN alfa/RBV

• Regimens With 2 DAAs + PegIFN alfa/RBV • IFN-Free Regimens

Faldaprevir* (BI 201335, PI)

Daclatasvir* (BMS-790052, NS5A)

Sofosbuvir* (GS-7977, NI)

Simeprevir* (TMC435, PI)

Vaniprevir (MK-7009, PI)

Daclatasvir + asunaprevir* Sofosbuvir + RBV

Sofosbuvir + GS-5885 (FDC) ± RBV

Daclatasvir + asunaprevir

ABT-450/RTV + ABT-267 ± ABT-333 ± RBV

Investigational HCV Regimensin Phase III Clinical Trials

• New Interferons

PegIFN lambda-1a + RBV

PegIFN lambda-1a + daclatasvir + RBV

ClinicalTrials.gov.

• Alternative Dosing

TVR BID* (approved PI)

*Studied with pegIFN-α2a. Studied with both pegIFN-α2a and pegIFN-α2b.

Page 60: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.
Page 61: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Toward a Future of Personalized Medicine for HCV Therapy

Direct-Acting Antivirals

NNI + PI± RBVNuc + RBV PegIFN +

RBV+ DAA Nuc + NS5A

Inh ± RBV Others?

Page 62: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Tertiary Centre Availability/# of patients per annum

Gauteng - CMAH Yes - ±6/year

Gauteng - CHB Yes - 5/year

KZN - IALCH Yes - no limit*

WC - Tygerberg Yes – 5/year

WC - GSH Yes – 6/year

HEPATITIS C Rx – AVAILABILITY OF PEG-IFN- RIBAVIRIN AT TERTIARY CENTRES IN SA

* Quaternary EDL – Peg-IFN/RBV not listed

Page 63: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Tertiary Centre Availability

Gauteng - CMAH No

Gauteng - CHB Yes – Peg-IFN

KZN - IALCH Yes – Peg and Std IFN

WC - Tygerberg No

WC - GSH Only STD IFN

HEPATITIS B Rx – AVAILABILITY OF Std and/or PEG-IFN AT TERTIARY CENTRES IN SA

Page 64: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Tertiary Centre AvailabilityGauteng - CMAH Yes

Gauteng - CHB Yes

KZN - IALCH Yes

WC - Tygerberg Yes

WC - GSH Yes

HEPATITIS B Rx – AVAILABILITY OF Tenofovir/Lamivudine

Page 65: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Private sector – HEPATITIS C• hepatitis C not a “PMB”• variation amongst funders• Discovery Health: ■ only consider funding if on classic/executive series ■ 20% co-payment• Medscheme administered funds: ■ mostly fund – variability on co-pay – usually no co-pay• LIMS – usually don’t consider funding Rx

Usually will fund Rx – problems arise with:1. Funding blood tests whilst on Rx2. Ability to access GM-CSF (NeupogenR) and EPO if needed

sometimes problematic

Page 66: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Private sector – HEPATITIS B• hepatitis B not a “PMB”

• Discovery Health: ■ NO funding for IFN or antivirals

• Medscheme administered funds: ■ Will consider funding IFN with motivation ■ Antivirals – often not

With motivation and appeal – may consider chronic benefits for long term antiviral Rx

Page 67: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Published: 2011/10/03

OPINION: When the private health sector falls shortPROPONENTS on both sides of the NHI debate have emphasised improving service at public health facilities, Mark Sonderup, Wendy Spearman and Nathan Geffen write

PROPONENTS on both sides of the National Health Insurance (NHI) debate have emphasised improving service at public health facilities. They are right. Many clinics and hospitals are understaffed and poorly managed, with shortages of essential medicines and equipment. Patients have to wait in long queues. They are lucky if they see a pharmacist for assistance on the correct use of medicines. The reasons for this are many and complex. The fragmented apartheid health system, the poor leadership until 2008 on the HIV/AIDS crisis, under-resourcing and poor management skills have affected the public health system. The skewed distribution of resources between private and public healthcare is a crucial factor.Medical schemes are the predominant way most private patients finance their healthcare. According to the Council for Medical Schemes, in 2009 there were about 8-million medical scheme beneficiaries — about 17% of the population. However, schemes don’t cover all expenses and many private-sector users have to pay for medical services.By contrast, 70% of people predominantly use the public health system. According to the Health Systems Trust, per capita health expenditure in the private sector was nearly five-and-a-half times per capita public sector expenditure in 2009. Despite this, schemes do not cover the treatment of many diseases, with many patients falling into the void between the public and private sectors.Perhaps spurred by the NHI discussions, private health providers are beginning to acknowledge that they need to do more and absorb a greater share of SA’s disease burden.About two weeks before the release of the NHI green paper, the World Health Organisation marked World Hepatitis day. It passed fairly unnoticed in SA, a country where hepatitis B virus infection is endemic. Chronic hepatitis B infection accounts for about half of all cases of liver cancer in SA. Hepatitis C has a far lower prevalence but can cause chronic liver disease with high morbidity and mortality. Both infections are complicated in people with HIV. It is then ironic that treatments for chronic viral hepatitis are available in the public sector, but access in the private sector is more difficult where chronic viral hepatitis is not a prescribed minimum benefit (PMB).Treatment of hepatitis C is with pegylated interferon, a medication injected weekly, together with ribavirin, a tablet taken daily. Treatment is expensive, requires specialist care and lasts for 24 or 48 weeks. Nevertheless, a public-sector patient with hepatitis C can access treatment. This is not the case for patients on medical schemes because hepatitis C is not a PMB.Several schemes do cover the cost of treatment as an ex gratia benefit and patients thus benefit. However, the country's biggest health insurer, Discovery Health, does not. Discovery offers treatment only for hepatitis C on its top two most expensive options and then a substantial co-payment is levied. Even for the well-off, this creates an invidious choice: risk financial ruin or risk morbidity and even death.Treatment for hepatitis B is also not covered by medical schemes. The exception to this is HIV-positive patients with hepatitis B, as they can readily access antiretroviral therapy, in which two of the drugs used are active against the hepatitis B virus as well.We therefore have a clear situation in which public-sector patients with hepatitis are better off than private medical scheme ones. This paints a distinctly more complicated picture of the differences in public and private healthcare in SA to the one we usually read about. In this case, the public sector is absorbing a great burden and providing good service, while medical schemes leave patients without care. Not only is private medical care much more expensive but, in this case, it offers less.Medical schemes such as Discovery must do their share and cover the full cost of chronic viral hepatitis treatment. The Council for Medical Schemes must take steps to ensure that treatment for chronic viral hepatitis becomes a PMB.These are all opportunities for the private sector to show whether it is interested in doing more to relieve the burden on the public health system or whether it is just making rhetorical noise in response to the perceived threat of NHI.

• Sonderup and Spearman are hepatologists at UCT and Groote Schuur Hospital. Geffen is with the Treatment Action Campaign.

Page 68: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Does the private health sector fall short?Author: Jasson Urbach Date: 10 October 2011

Critics of private health care in SA argue that the private sector does not do enough, that it dumps patients on the public sector and is only interested in “money first”. Sonderup, Spearman and Geffen recently argued in the Business Day article, When the private sector falls short, 3 Oct. 2011, that medical schemes are evil because they “do not cover the treatment of many diseases causing many patients to fall into the void between the public and private sectors”. That “it is then ironic that treatments for chronic viral hepatitis are available in the public sector, but access in the private sector is more difficult where chronic viral hepatitis is not a prescribed minimum benefit (PMB)”. However, just because a condition is not a PMB, does not mean medical aids do not cover it. In fact, any legitimate treatment will be covered subject to the rules of the scheme. The only difference is that, if the condition is not a PMB, the scheme is not obliged to pay the doctors in full regardless of what they charge for their services.  Sonderup, Spearman and Geffen then suggest that “The Council for Medical Schemes must take steps to ensure that treatment for chronic viral hepatitis becomes a PMB”. The fact that two of the critics in this case happen to be hepatologists and are arguing that chronic viral hepatitis should be covered as a PMB is equally ironic. They are surely arguing in their own self-interest and wish to have viral hepatitis declared a PMB to enhance their own incomes. It is government that determines which conditions are included in the list of PMBs, not medical schemes, and certainly no one individual scheme. And herein lies an important point. When benefits are determined politically rather than by medical schemes responding to what individuals want, the benefit packages expand and their costs increase.

The consequence is that low cost medical schemes that cover the basic needs of low-income people can no longer be efficiently designed and the unfortunate low income earners are denied cover. It is then that they are driven into “the void between the public and private sector”. Medical schemes are not charities; they are obliged by economic realities and the interests of the members of their schemes to take great care in managing available resources. If scheme managers were to recklessly pay claims that are not included in the agreements with scheme members they would be guilty of dereliction of duty and would threaten the solvency and continued existence of the schemes they are managing. They have to stick to the rules and ensure that they do not bankrupt the schemes. Eminent economists have declared that because people’s health, or lack of it, lies largely and increasingly within their own - and earlier their parents' - control, many, if not most health risks are actually uninsurable. Risk pooling and intense actuarial and managerial effort is employed in an attempt to overcome the innate problems that are consequently bound to face private medical scheme managers.  Theirs is an almost impossible task and regulatory interventions make their task even more difficult, very often to the detriment of the majority of medical scheme members. AUTHOR  Jasson Urbach is a director of the Health Policy Unit (a division of the Free Market Foundation). This article may be republished without prior consent but with acknowledgement to the author. The views expressed in the article are the author’s and are not necessarily shared by the members of the Foundation.

Page 69: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

HCV parameter Public Sector Private Sector

Diagnostic tools e.g. genotype/VL/biopsy

✔ ✔

Non-invasive fibrosis assessment e.g.

Fibroscan

X X

IL28-B ”✔" ”✔”

Peg-RBV ✔ ±✔

DAAs X X

Follow up blood tests on Rx

✔ ✔$$

Page 70: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

HBV parameter Public Sector Private Sector

Diagnostic tools e.g. VL/biopsy

✔ ✔

Non-invasive fibrosis assessment e.g.

Fibroscan

X X

IFN/Peg-IFN limited X

TDF/LAM ✔ X

Follow up blood tests on Rx

✔ -

Page 71: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

Every doctor/HCW is an activist

Page 72: Treating hepatitis B and C (in South Africa ) Treating hepatitis B and C (in South Africa ) Dr Mark Sonderup Division of Hepatology and Department of Medicine.

"Knowing is not enough, we must apply.

Willing is not enough, we must do,"

Goethe