Pegylated Interferon, Ribavirin, Telaprevir in Hepatitis C Virus Infection in Orthotopic Liver Transplant Recipients

Hepatitis C Clinical Trial

Official title:

A Pilot Study on the Efficicay and Safety of Pegylated Interferon, Ribavirin and Telaprevir in Recurrent Hepatitis C Virus (HCV) Infection in Orthotopic Liver Transplant (OLT) Recipients.

Clinical Trial Details — Status: Terminated

Administrative data

• NCT number: NCT01592006
• Other study ID #: 12-0156
• Status: Terminated
• Phase: Phase 4
• First received: April 27, 2012
• Last updated: January 5, 2015
• Start date: April 2012
• Est. completion date: September 2014

Study information

• Verified date: January 2015
• Source: University of Chicago
• Contact: n/a
• Is FDA regulated: No
• Health authority: United States: Institutional Review Board
• Study type: Interventional

Clinical Trial Summary

Patients are being asked to be part of this study because they are a liver transplant recipient and have the Hepatitis C Virus (HCV). Current routine treatment for HCV for liver transplant patients includes taking two medications called pegylated interferon alfa-2a (Pegasys®) and ribavirin. Patients Pegasys and ribavirin are FDA approved for the treatment of HCV.

This study will evaluate the safety and efficacy of adding a third drug called telaprevir for the experimental treatment of HCV in liver transplant patients. The combination of Pegasys, ribavirin and telaprevir is currently FDA approved for the treatment of HCV, but is specifically not FDA approved for HCV patients who have had a liver transplant. This is because more information is needed about possible drug interactions between telaprevir and cyclosporine, or telaprevir and tacrolimus-based immunosuppressive drugs, which are typically part of routine care for transplant patients.

Studies have shown that the addition of telaprevir greatly increases the efficacy of Pegasys and ribavirin for the treatment of HCV. However, these studies did not include adequate information on transplant patients due to the potential drug interactions.

The investigators hope to gather more information about the safety and efficacy of telaprevir given in combination with Pegasys and ribavirin in the liver transplant patients who have HCV that is not well controlled with Pegasys and ribavirin alone.

Description:

BACKGROUND:

Cirrhosis from HCV is the most common indication for OLT. Unfortunately, disease recurrence in the allograft is virtually universal. The spectrum of disease recurrence ranges from minimal inflammation to severe cholestasis as well as cirrhosis, leading to allograft failure. Previous reports indicated a comparable survival rate between patients who received OLT for HCV and those who received OLT for other indications. More recent data, however, suggested that HCV-positive recipients have significantly impaired patient and allograft survival following OLT as compared to HCV-negative recipients. Approximately 20% of patients with recurrent HCV have cirrhosis at 5 years post-OLT.

Attempts to treat HCV recurrence in OLT recipients have had limited success. Sustained virologic responses (SVR) have only been seen in up to 30% of patients with genotype 1 infection, whereas SVR has been higher at 42-46% for non-transplant counterparts. Most recently, the addition of telaprevir to pegylated interferon and ribavirin to comprise the triple therapy in the nontransplant HCV-infected population has led to significantly higher sustained virologic response rate (SVR) of 75% when compared to 44% observed in the control arm which received pegylated interferon and ribavirin. Its side effect profile was acceptable to allow the FDA to approve the drug on May 23, 2011. However, there is no data on the efficacy and safety of telaprevir in OLT recipients. In fact, its use in this population is greatly hindered by a significant drug-drug interaction with the major immunosuppressive agents used in OLT, namely tacrolimus and cyclosporine. Telaprevir increases cyslosporine exposure by 4.6 fold and its half-life by 3.5 fold. It increases tacrolimus exposure to 70 fold and its half-life by 4.9 fold. Clearly, the doses of these immunosuppressive agents need to be adjusted at the start and end of telaprevir therapy.

The primary aim of our study is to determine the safety and efficacy of pegylated interferon alfa-2a (Pegasys®), ribavirin, and telaprevir therapy in liver transplant recipients with hepatitis C recurrence who are maintained on cyclosporine or tacrolimus-based immunosuppression. We hypothesize that triple therapy will have better sustained virologic response rates than the current standard of care, pegylated interferon and ribavirin, with an acceptable side-effect profile.

STUDY DESIGN:

Prospective, open-label, single center pilot study. All patients will receive the study drug along with the standard regimen of pegylated interferon and ribavirin.

DRUG DOSE AND TREATMENT DURATION:

Patients will be treated with pegylated interferon alfa-2a (Pegasys®) 180 mcg SQ per week, ribavirin 800-1200 mg PO per day (weight-based) for 48 weeks. Telaprevir 750 mg PO tid will be administered for the first 12 weeks. Following completion of therapy, patients will be followed for another 24 weeks to determine sustained response.

*Doses lower than 800 mg/day may be used by the investigator in patients with renal insufficiency (as ribavirin is renally excreted), at the investigator's discretion.

RESEARCH PROTOCOL:

This prospective study will include patients who have histologic evidence of recurrent HCV infection who are maintained on cyclosporine-based immunosuppression.

Patients who qualify for the study will be identified from the Liver Transplant Clinic. Patients will be treated with pegylated interferon alfa-2a (Pegasys®) 180 mcg SQ per week, ribavirin 600-1200 mg PO per day, and telaprevir 750 mg tid (Incivek®) for 12 weeks, followed by pegylated interferon alfa-2a (Pegasys®) and ribavirin for another 36 weeks. Patients will be assessed at periodic intervals for safety and adverse effects as delineated in the Schedule of Assessments (Appendix A). Growth factors such as erythropoietin and filgastrim will be allowed in the event that signficiant anemia and thrombocytopenia develops during therapy, at the discretion of the investigator.

The HCV RNA will be measured at baseline and weeks 2, 4, 8, 12, 24, 36 and 48 of therapy as well as during follow-up. Response to therapy is defined by HCV RNA <1000 IU/ml at weeks 4, 8, and 12 of therapy, which will allow continuation of treatment. Telaprevir will be discontinued if HCV RNA is >1000 IU/ml at weeks 4 or 8 of therapy, and pegylated interferon and ribavirin will be discontinued if HCV RNA is still detectable by week 24 of therapy.

Cyclosporine or tacrolimus trough levels will be drawn at baseline, days 1,2, 3, 4,5, 8, and to be continued every 2-3 days. The cyclosporine or tacrolimus dose will be cut by 50% at baseline and cyclosporine or tacrolimus dose adjustments will be made to maintain the level within the targeted therapeutic range. Once two consecutive levels within the targeted therapeutic range have been achieved, levels will be drawn weekly for the first month then biweekly until the end of telaprevir treatment. After the last dose of telaprevir, cyclosporine or tacrolimus levels will be drawn on days 1, 3, 5, 7 and to be continued every other day, and cyclosporine or tacrolimus dose adjustments will be made to maintain the level within the targeted therapeutic range. Once two consecutive levels within the targeted therapeutic range have been achieved, levels will be drawn in a week and then monthly for up to week 24 of therapy. Patients who complete therapy will continue to be followed for 24 weeks to determine their sustained virologic response.

STATISTICAL ANALYSIS:

This is a pilot, single arm study that evaluates the efficacy and safety of triple therapy in recurrent HCV. All clinical and laboratory data will be entered into a computer database. Categorical variables will be expressed as proportions and continuous variables will be expressed in mean values.

Recruitment information / eligibility

• Status: Terminated
• Enrollment: 3
• Est. completion date: September 2014
• Est. primary completion date: September 2014
• Accepts healthy volunteers: No
• Gender: Both
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Male or female patients > 18 years of age.

• Detectable plasma HCV-RNA by qualitative PCR assay.

• HCV genotype 1 infection,

• Documented recurrent hepatitis C by liver biopsy within the past year.

• On cyclosporine or tacrolimus-based immunosuppression

• Negative urine pregnancy test before initiating the treatment for women of childbearing potential.

• Willingness of the patient and all potentially childbearing partners to use a reliable form of effective contraception during the study, unless the patient or partner is surgically sterile or post-menopausal.

• Willingness to undergo provide informed consent and comply with study requirements.

Exclusion Criteria:

• Genotype non-1 HCV infection.

• Women who are pregnant or breast-feeding.

• Male partners of women who are pregnant.

• Evidence of co-infection with HIV or hepatitis B.

• History of severe psychiatric disease.

• History of immunologically mediated disease (e.g., inflammatory bowel disease, lupus erythematosus, rheumatoid arthritis, etc.)

• History of clinically significant pulmonary disease.

• History of severe cardiac disease.

• History of malignancy where risk of recurrence is >20% within 2 years.

• History of uncontrolled seizure disorder.

• History of poorly controlled thyroid disease.

• History of poorly controlled diabetes mellitus.

• History of severe retinopathy.

• Active gout.

• History or evidence of severe medical illness that, in the opinion of the investigator, makes the patient unsuitable for pegylated interferon alfa-2a treatment (Pegasys®).

• Inability or unwillingness to abstain from alcohol throughout the entire study period.

Study Design

Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment

Related Conditions & MeSH terms

• Hepatitis
• Hepatitis A
• Hepatitis C

Intervention

Drug:
• Peginterferon alfa-2a
Patients will be treated with pegylated interferon alfa-2a (Pegasys®) 180 mcg SQ per week for 12 weeks, followed by pegylated interferon alfa-2a (Pegasys®) and ribavirin for another 36 weeks. Patients will be assessed at periodic intervals for safety and adverse effects. Following completion of therapy, patients will be followed for another 24 weeks to determine sustained response.
• Ribavirin
Patients will be given ribavirin 600-1200 mg PO per day for 12 weeks, followed by pegylated interferon alfa-2a (Pegasys®) and ribavirin for another 36 weeks. Patients will be assessed at periodic intervals for safety and adverse effects. Following completion of therapy, patients will be followed for another 24 weeks to determine sustained response.
• telaprevir
Patients will be given telaprevir 750 mg tid (Incivek®) for 12 weeks, followed by pegylated interferon alfa-2a (Pegasys®) and ribavirin for another 36 weeks. Patients will be assessed at periodic intervals for safety and adverse effects. Following completion of therapy, patients will be followed for another 24 weeks to determine sustained response.

Locations

Country	Name	City	State
United States	University of Chicago Medical Center	Chicago	Illinois

Sponsors (1)

Lead Sponsor	Collaborator
University of Chicago

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	The Efficacy of Triple Antiviral Therapy	To evaluate the efficacy of triple antiviral therapy, consisting of pegylated interferon alfa-2a (Pegasys®), ribavirin, and telaprevir therapy in liver transplant recipients with hepatitis C. This will be measured and reported by sustained virologic response	3 years from start of study	No
Secondary	Safety of Triple Antiviral Therapy in HCV Infected OLT Recipients	Tolerability and Safety will be measured and reported by serious adverse events.	6 years from the start of the study	Yes