NCT01051921

Study of CTS-1027 in Combination With Pegylated Interferon and Ribavirin in Hepatitis C Virus (HCV) Null-Responders

An Open-Label Trial of Pegylated Interferon Plus Ribavirin in Combination With CTS-1027 in HCV Null-Responders

• Status: Completed
• Phase: Phase 2
• Study type: Interventional
• Enrollment: 67 (actual)
• Sponsor: Conatus Pharmaceuticals Inc. · Industry
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

The purpose of this study is to determine if the combination treatment of CTS-1027, pegylated interferon and ribavirin can improve the response rates in HCV patients who did not previously respond to pegylated interferon and ribavirin therapy.

Detailed description

A subset of non-responders to standard of care treatments (pegylated interferon and ribavrin) is termed null responders. Null responders are the most treatment refractory population. Treatment for null responders is currently limited: retreatment with SOC results in approximately 5% sustained virologic response (SVR). CTS-1027 may facilitate the activity of interferon by preventing MMP-induced cleavage and deactivation in both phases of clinical response to therapy. In addition, CTS-1027, like ribavirin, alone does not significantly affect viral replication, but both CTS-1027 and ribavirin are likely to impact response to therapy during the second and slower phase of the clinical response. The potential of MMP inhibition to facilitate the action of interferon, together with ribavirin-driven up-regulation of interferon stimulated genes, has the potential to yield a potent host immune response in this highly resistant null-responder patient population. Again, since MMP inhibition is thought to target the second slower phase kinetics, the initial treatment duration in this trial will be 24 weeks. This trial will evaluate the safety and efficacy of CTS-1027 combined with SOC in patients who did not previously respond to SOC therapy.

Conditions

• Hepatitis C

Interventions

Type	Name	Description
DRUG	CTS-1027	CTS-1027 supplied in 5 and 10 mg tablets, 15 mg taken twice daily, for up to 48 weeks
DRUG	Pegylated interferon	Pegylated interferon, 180 micrograms in 0.5 ml of solution injected subcutaneously (SQ) once per week, for up to 48 weeks. Packaged in single use syringes.
DRUG	Ribavirin	Ribavirin, 200 mg capsules taken in two divided daily doses totaling 1000 mg (5 capsules) for patients weighing 75 kg or less, or 1200 mg (6 capsules) for patients weighing more than 75 kg for up to 48 weeks.

Timeline

• Start date: 2010-01-01
• Primary completion: 2011-11-01
• Completion: 2011-12-01
• First posted: 2010-01-20
• Last updated: 2012-04-16
• Results posted: 2012-04-10

Locations

15 sites across 2 countries: United States, Puerto Rico