Clinical trial NCT01080222: A Safety and Efficacy Study of the Combination of VX-222 and Telaprevir in Treatment-Naïve Subjects With Genotype 1 Chronic Hepatitis C Virus Infection
Official title: A Randomized, Parallel-Group, Dose-Ranging Study to Evaluate Efficacy, Safety, Pharmacokinetics, and Antiviral Activity of VX-222 and Telaprevir in Combination With and Without Peginterferon-Alfa-2a (Pegasys®) and Ribavirin (Copegus®) in Treatment-Naïve Subjects With Genotype 1 Chronic Hepatitis C
Study type: INTERVENTIONAL
Overall status: TERMINATED
Phase: PHASE2
Conditions: Chronic Hepatitis C Virus Infection
Keywords: VX-950
Lead sponsor: Vertex Pharmaceuticals Incorporated
Sponsor class: INDUSTRY
First posted: 2010-03-04
Enrollment: 152
Sex: ALL
Minimum age (years): 18
Maximum age (years): 65
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: The purpose of this study is to assess the safety and efficacy of combination treatment with VX-222 and telaprevir administered for 12 weeks with and without peginterferon-alfa-2a and/or ribavirin. The subjects enrolled in this study are chronically infected with hepatitis C virus (HCV) genotype 1 and will not have previously received treatment for their HCV infection.

This study will include an Investigational Phase and Extension Phase. These phases will contain a Treatment Period and a Follow-up Period. All subjects will be enrolled in the Investigational Phase of this study. Subjects who fail treatment during the Investigational Phase will have the option to enter the Extension Phase at which point they will be eligible to receive peginterferon alfa-2a and ribavirin for a total of 48 weeks.

Based on an evaluation of on-treatment safety, pharmacokinetic and antiviral data from patients in each arm of the trial, Vertex may elect to enroll up to two additional treatment arms (Treatment Arm E and Treatment Arm F) that will evaluate telaprevir/VX-222-based combination therapy. The components of the treatment regimens of these arms will be selected based on clinical data that emerges from the four initially-studied regimens. If enacted, up to 25 patients are expected to enroll in each additional treatment arm.

If Treatment Arm E or Treatment Arm F is discontinued subjects meeting certain criteria will have the option to enter a telaprevir-containing Rollover Phase. Subjects who do not meet the eligibility criteria to enter the Rollover Phase may elect to enter the Extension Phase.


Eligibility criteria: Inclusion Criteria:

* Males and females of non-childbearing potential
* Genotype 1 chronic hepatitis C
* Laboratory evidence of HCV infection for 6 months
* Histologic evidence of chronic hepatitis C
* Subjects who have a body mass index (BMI) of ≤35 kg/m² (BMI = weight in kg / height² in meters)
* Treatment Arm E: This arm will enroll only subjects infected with HCV genotype 1b virus
* Treatment Arm F: This arm will enroll only subjects infected with HCV genotype 1a virus

Exclusion Criteria:

* Subjects who have received any previous treatment with any approved or investigational drug or drug regimen for the treatment of hepatitis C
* Subjects with any contraindications to peginterferon alfa-2a and/or ribavirin
* Subjects with any other cause of significant liver disease in addition to hepatitis C, which may include, but is not limited to malignancy with hepatic involvement, hepatitis B, drug or alcohol-related cirrhosis, autoimmune hepatitis, hemochromatosis, Wilson's disease, nonalcoholic steatohepatitis (NASH), or primary biliary cirrhosis
* Histologic evidence of hepatic cirrhosis

Primary outcomes:
measure: Safety and Tolerability
timeFrame: 40 weeks
Secondary outcomes:
measure: Proportion of Subjects Who Achieve a Sustained Viral Response
timeFrame: 24 weeks after the completion of the last dose of the assigned study drug treatment regimen
measure: Undetectable HCV RNA Measurements
timeFrame: 36 weeks
measure: Proportion of Subjects Who Have a Viral Breakthrough or Relapse
timeFrame: 60 weeks
measure: Plasma Exposures of VX-222 and Telaprevir
timeFrame: 12 weeks
Other outcomes:
Locations:
city: La Jolla
country: United States
state: California
city: San Francisco
country: United States
state: California
city: Aurora
country: United States
state: Colorado
city: Gainesville
country: United States
state: Florida
city: Atlanta
country: United States
state: Georgia
city: Marietta
country: United States
state: Georgia
city: Lutherville
country: United States
state: Maryland
city: Rochester
country: United States
state: Minnesota
city: Saint Louis
country: United States
state: Missouri
city: Egg Harbor Township
country: United States
state: New Jersey
city: New York
country: United States
state: New York
city: Chapel Hill
country: United States
state: North Carolina
city: Durham
country: United States
state: North Carolina
city: Cincinnati
country: United States
state: Ohio
city: Providence
country: United States
state: Rhode Island
city: Germantown
country: United States
state: Tennessee
city: Arlington
country: United States
state: Texas
city: San Antonio
country: United States
state: Texas
city: Falls Church
country: United States
state: Virginia
city: Auckland
country: New Zealand
city: Christchurch
country: New Zealand
Study officials:
affiliation: Vertex Pharmaceuticals Incorporated
name: Medical Monitor
role: STUDY_DIRECTOR
References:
citation: Jiang M, Zhang EZ, Ardzinski A, Tigges A, Davis A, Sullivan JC, Nelson M, Spanks J, Dorrian J, Nicolas O, Bartels DJ, Rao BG, Rijnbrand R, Kieffer TL. Genotypic and phenotypic analyses of hepatitis C virus variants observed in clinical studies of VX-222, a nonnucleoside NS5B polymerase inhibitor. Antimicrob Agents Chemother. 2014 Sep;58(9):5456-65. doi: 10.1128/AAC.03052-14. Epub 2014 Jun 30.
citation: Di Bisceglie AM, Sulkowski M, Gane E, Jacobson IM, Nelson D, DeSouza C, Alves K, George S, Kieffer T, Zhang EZ, Kauffman R, Asmal M, Koziel MJ. VX-222, a non-nucleoside NS5B polymerase inhibitor, in telaprevir-based regimens for genotype 1 hepatitis C virus infection. Eur J Gastroenterol Hepatol. 2014 Jul;26(7):761-73. doi: 10.1097/MEG.0000000000000084.