Hepatitis web study Hepatitis web study Simeprevir + Sofosbuvir +/- Ribavirin in Genotype 1 COSMOS Trial Phase 2a, Treatment Naïve and Treatment Experienced.

Hepatitisweb study

Hepatitisweb study

Simeprevir + Sofosbuvir +/- Ribavirin in Genotype 1COSMOS Trial

Phase 2a, Treatment Naïve and Treatment Experienced

Treatment Naïve and Treatment Experienced

Lawitz E, et al. Lancet. 2014;July 28 [Epub ahead of print].

Hepatitisweb studySource: Lawitz E, et al. Lancet. 2014;July 28 [Epub ahead of print]

Simeprevir + Sofosbuvir +/- Ribavirin for HCV GT 1COSMOS Trial: Study Features

COSMOS Trial: Features

Design: Randomized, phase 2a, open-label, using sofosbuvir + simeprevir +/- ribavirin in treatment naive or experienced, chronic HCV GT 1

Setting: 23 centers in United States

Entry Criteria - Chronic HCV Genotype 1- Age ≥18- HCV RNA greater than 10,000 IU/mL- Cohort 1: prior nonresponders; Metavir F0-F2- Cohort 2: treatment naïve & prior nonresponders; Metavir F3-F4

Patient Characteristics (range in different treatment arms)- N = 167 (n = 80 in Cohort 1 and n = 87 in Cohort 2)- Baseline GT1a with Q80K: Cohort 1 = 50%; Cohort 2 = 40%- Non-CC IL28b Genotype: Cohort 1 = 94%; Cohort 2 = 79%

End-Points: Primary = SVR12; Secondary = safety

Hepatitisweb studySource: Lawitz E, et al. Lancet. 2014;July 28 [Epub ahead of print]

Simeprevir + Sofosbuvir +/- Ribavirin for HCV GT 1COSMOS Trial: Baseline Characteristic

Baseline Characteristic (n = 167) Cohorts 1 and 2

Median Age, years (range) 57 (27-70)

Male, % 64

White, % 81

Median Body Mass Index (BMI) 28

HCV genotype 1a= 78%; 1b = 22%

IL28B non-CC genotype, (%) 86%

Mean baseline HCV RNA, log10 IU/ml 6.6

Metavir Score F01= 20%; F2=28%; F3 = 28%; F4=25%

Previous HCV treatment No response (%) Treatment-naïve (%)

76%24%

Hepatitisweb study

Simeprevir + Sofosbuvir +/- Ribavirin for HCV GT 1COSMOS Trial: Design for Cohort 1

Cohort 1: Prior Nonresponders; Metavir Scores F0-F2

Source: Lawitz E, et al. Lancet. 2014;July 28 [Epub ahead of print]

SOF + SMV + RBV

SOF + SMV + RBV

SOF + SMVN = 14

SOF + SMV

N = 27

N = 15

N = 24

Drug DosingSOF= Sofosbuvir: 400 mg once dailySMP =Simeprevir: 150 mg once dailyRBV = Ribavirin (weight-based and divided bid): 1000 mg/day if < 75 kg or 1200 mg/day if ≥ 75 kg

0 24 36Week 12

SVR12

SVR12

SVR12

SVR12

Hepatitisweb study

Simeprevir + Sofosbuvir +/- Ribavirin for HCV GT 1COSMOS Trial: Results for Cohort 1

COSMOS (Cohort 1): SVR 12 by Regimen


SOF + SMV + RBV SOF + SMV SOF + SMV + RBV SOF + SMV0

20

40

60

80

100

79

93 96 93

Pa

tie

nts

wit

h S

VR

12

(%

)

SOF = sofosbuvir; SMV = simeprevir; RBV = ribavirin

19/24 14/15 26/27 13/14

24-Week Treatment 12-Week Treatment

Hepatitisweb study

Simeprevir + Sofosbuvir +/- Ribavirin for HCV GT 1COSMOS Trial: Design for Cohort 2

Cohort 2: Treatment Naïve & Prior Nonresponders; Metavir Scores F3-F4


SOF + SMV + RBV

SOF + SMV + RBV SVR12

SOF + SMV N = 14

Drug DosingSofosbuvir: 400 mg once dailySimeprevir: 150 mg once dailyRibavirin (weight-based and divided bid): 1000 mg/day if < 75 kg or 1200 mg/day if ≥ 75 kg

SOF + SMV

N = 27

N = 16

N = 30

SVR12

SVR12

SVR12

0 24 36Week 12

Hepatitisweb study

Simeprevir + Sofosbuvir +/- Ribavirin for HCV GT 1COSMOS Trial: Results

COSMOS (Cohort 2 with F3-F4 Fibrosis): SVR12 by Regimen


SOF + SMV + RBV SOF + SMV SOF + SMV + RBV SOF + SMV0

20

40

60

80

100

93100

93 93

Pa

tie

nts

wit

h S

VR

12

(%

)

SOF = sofosbuvir; SMV = simeprevir; RBV = ribavirin

28/30 16/16 25/27 13/14


Hepatitisweb study

Simeprevir + Sofosbuvir +/- Ribavirin for HCV GT 1COSMOS Trial: Results for Cohort 1 & 2

Cohort 1 & 2: SVR12


SOF + SMV + RBV SOF + SMV SOF + SMV + RBV SOF + SMV SOF + SMV +/- RBV0

20

40

60

80

100

79

93 96 93 9093100

93 93 94

Cohort 1 Cohort 2

Pa

tie

nts

wit

h S

VR

12

(%

)

19/24


14/15 26/27 13/1428/30 16/16 25/27 13/14 72/80 82/87

Overall

Hepatitisweb study


Cohort 1 & 2: SVR12 (Non-VR excluded analysis*)


SOF + SMV + RBV SOF + SMV SOF + SMV + RBV SOF + SMV SOF + SMV +/- RBV0

20

40

60

80

10095

10096 93 96

100 10093 93 96

Cohort 1 Cohort 2

Pa

tie

nts

wit

h S

VR

12

(%

)

*Non-VR excluded analysis = SVR12 excludes early discontinuation due to non-virologic reasons or missing data at SVR12 time point

19/20 13/13 26/27 13/1428/28 15/15 25/27 13/14 71/74 81/84

24-Week Treatment 12-Week Treatment Overall

Hepatitisweb study


Impact of Q80K on SVR in Patients with GT1


Cohort 1 Cohort 2 Cohort 1 & 2 0

20

40

60

80

100

94 95 9589

94 92

81

9688

97 95 94

GT1b

Pa

tie

nts

wit

h S

VR

12

(%

)

*G80K = Gln80Lys

17/18 30/31 64/68 38/4055/62 18/19 26/27 35/37 119/130 68/7225/31 51/58

Hepatitisweb studySource: Sulkowski MS, et al. JAMA. 2014;312:353-61.

Simeprevir + Sofosbuvir +/- Ribavirin for HCV GT 1COSMOS Trial: Interpretation

Interpretation: “Combined simeprevir and sofosbuvir was efficacious and well tolerated.”

Hepatitisweb study

Simeprevir + Sofosbuvir +/- Ribavirin for HCV GT 1COSMOS Trial: Key Points

• High Rates of SVR even in difficult to treat groups, including patients compensated cirrhosis and prior nonresponse to therapy

• Rapid virologic response (RVR) did not predict SVR 12

• Addition of ribavirin did not clearly improve SVR rates

• Extending treatment to 24 weeks did not clearly improve SVR rates, except possibly in patients with prior relapse and advanced fibrosis

• Patients with baseline G80K (Gln80Lys) had high SVR rates, including those with compensated cirrhosis

• Ribavirin did not significantly impact SVR in patients with baseline G80K

• Regimen well tolerated: fatigue, headache, and nausea were most common side effect

• Phase 3 studies underway with simeprevir + sofosbuvir in OPTIMIST program


Hepatitisweb study

Hepatitisweb study

This slide deck is from the University of Washington’s Hepatitis C Online and Hepatitis Web Study projects.

Hepatitis C Online

www.hepatitisc.uw.edu

Hepatitis Web Study

http://depts.washington.edu/hepstudy/

Funded by a grant from the Centers for Disease Control and Prevention.

http://www.hepatitisc.uw.edu/




Hepatitis web study Hepatitis web study Simeprevir + Sofosbuvir +/- Ribavirin in Genotype 1 COSMOS Trial Phase 2a, Treatment Naïve and Treatment Experienced.

Documents