NCT02613403

Efficacy and Safety of Grazoprevir (+) Uprifosbuvir (+) Ruzasvir (MK-3682B) (MK-5172 + MK-3682 + MK-8408) Fixed Dose Combination in Chronic HCV Participants Failing Prior Antiviral Treatment (MK-3682-021)

A Phase II, Randomized, Open-Label Clinical Trial to Study the Efficacy and Safety of the Combination Regimen of MK-3682B (MK-5172 + MK-3682 + MK-8408 Fixed Dose Combination (FDC)) in Subjects With Chronic HCV GT1 or GT3 Infection Who Have Failed a Direct Acting Antiviral Regimen

• Status: Terminated
• Phase: Phase 2
• Study type: Interventional
• Enrollment: 94 (actual)
• Sponsor: Merck Sharp & Dohme LLC · Industry
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

This is a randomized, multicenter, 2-part, open-label trial of the combination regimen of grazoprevir (GZR \[MK-5172\]; 100mg), uprifosbuvir (UPR \[MK-3682\]; 450 mg) and ruzasvir (RZR \[MK-8408\]; 60 mg) with and without Ribavirin (RBV) in cirrhotic (C) or non-cirrhotic (NC) participants infected with hepatitis C virus (HCV) previously failing a direct-acting antiviral regimen (DAA). The combination regimen, referred to as MK-3682B, will be administered as two fixed-dose combination (FDC) tablets, given once-daily. The study will evaluate the efficacy of MK-3682B with or without RBV as assessed by the proportion of participants achieving Sustained Virologic Response 12 weeks (SVR12) after the end of all study therapy.

Detailed description

This trial was divided into Part A and Part B. In Part A, comprised of 4 treatment arms, C or NC participants with HCV genotype (GT) 1 infection previously failing a DAA regimen of either sofosbuvir (SOF)/ledipasvir (LDV) \[Arms 1 and 2\] or elbasvir (EBR)/GZR \[Arms 3 and 4\] were randomized to receive either one of the following: 1) MK-3682B + RBV for 16 weeks \[Arms 1 and 3\]; or 2) MK-3682B for 24 weeks \[Arms 2 and 4\]. Study Part A was completed as planned per study protocol. In Part B, C or NC participants with GT1 through GT6 infection previously failing any all-oral DAA regimen (GT1-6) or SOF/pegylated interferon and ribavirin (PR) regimen (GT 3 only) were to receive MK-3682B for 16 weeks. However, the trial was terminated prior to participant enrollment for study Part B. Participants in MK-5172-017 (NCT01667081) were eligible for enrollment in the study.

Conditions

• Hepatitis
• Hepatitis C
• Digestive System Diseases
• Flaviviridae Infections
• Hepatitis, Viral, Human
• Liver Diseases
• RNA Virus Infections
• Virus Diseases

Interventions

Type	Name	Description
DRUG	MK-3682B	Two MK- 3682B 1,136 mg FDC tablets each containing 50 mg MK-5172 (GZR), 225 mg MK-3682 (UPR, formerly IDX21437), and 30 mg MK-8408 (RZR) taken once daily by mouth.
DRUG	Ribavirin	Ribavirin 200 mg capsules, taken twice daily by mouth as part of a weight-based dosing regimen. Depending on participant body weight, total daily dose of Ribavirin may be 800, 1000, 1200 or 1400 mg per day.

Timeline

• Start date: 2015-12-10
• Primary completion: 2017-01-09
• Completion: 2017-03-27
• First posted: 2015-11-24
• Last updated: 2024-05-22
• Results posted: 2018-03-20

Regulatory

• FDA-regulated drug study