DrugLib.com — Drug Information Portal

Rx drug information, pharmaceutical research, clinical trials, news, and more



Boceprevir in HIV-HCV Coinfected Patients Who Have Failed to a Previous Therapy With Peg-Interferon/Ribavirin

Information source: French National Institute for Health and Medical Research-French National Agency for Research on AIDS and Viral Hepatitis (Inserm-ANRS)
ClinicalTrials.gov processed this data on August 23, 2015
Link to the current ClinicalTrials.gov record.

Condition(s) targeted: HCV Coinfection; HIV-1 Infection

Intervention: Boceprevir, Peg-interferon alfa 2b and Ribavirin (Drug)

Phase: Phase 2

Status: Completed

Sponsored by: French National Institute for Health and Medical Research-French National Agency for Research on AIDS and Viral Hepatitis (Inserm-ANRS)

Official(s) and/or principal investigator(s):
Isabelle Poizot-Martin, MD, Principal Investigator, Affiliation: Marseille University Hospital
Eric Bellissant, MD, PhD, Study Chair, Affiliation: Rennes University Hospital

Summary

The majority of Human immunodeficiency Virus (HIV)/Hepatitis C Virus (HCV) co-infected patients are non responders after 48 weeks of the current standard-of-care with Peg-Interferon/Ribavirin. The results of re-treatment are disappointing. The addition of Boceprevir to the current standard-of-care has been shown to increase the efficacy of therapy in HCV mono-infected patients previously treated with a bi-therapy. Knowing that HIV/HCV co-infected patients are subject to more rapid hepatic fibrosis as well as to increased risks of cirrhosis, end-stage liver disease and hepatocellular carcinoma, it is important to improve the response rate of the re-treatment of hepatitis C in these patients. The aim of this pilot study is to evaluate the efficacy and safety of Boceprevir in combination with Peg-Interferon alfa 2b plus ribavirin, in patients co-infected with HIV and chronic genotype 1 HCV, and previously treated with Peg-Interferon/Ribavirin. 80 subjects will be enrolled. The primary endpoint will be the Sustained Virologic Response (SVR) defined as undetectable HCV-RNA at Week 24 after the end of therapy.

Clinical Details

Official title: Pilot Study to Assess the Efficacy and Safety of Boceprevir, in Combination With Peg-Interferon Alfa and Ribavirin, in Patients With HCV/HIV Co-infection Who Have Failed to a Previous Therapy With Peg-Interferon/Ribavirin

Study design: Allocation: Non-Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment

Primary outcome: Sustained Virologic Response

Secondary outcome:

HCV viral load

Predictive factors of Sustained virologic Response (SVR)

HIV virologic endpoints

Residual plasmatic concentration (Cres) of Ribavirin

Hepatic factors: liver fibrosis score

Alcohol consumption

Evaluation of Pharmacokinetic parameters of anti-retroviral treatments

Clinical and biological adverse events

Number of participants classified by virologic failure type: non responder, relapser, null responder

ITPA gene polymorphism

CYP3A4 Polymorphism

Maximal Concentration (Cmax) of antiretroviral treatments

Area Under the Curve (AUC) of antiretrovirals

Insulin resistance

Metabolic syndrome

Reasons and dates of treatment discontinuation

Perceived symptoms

French AIDS questionnaire of compliance

Tobacco consumption

Cannabis consumption

Intravenous/nasal drugs consumption

Residual Concentration (Cres) of atazanavir boosted or not by ritonavir

Residual concentration (Cres) of ritonavir

Detailed description: The majority of HIV/HCV co-infected patients are non responders after 48 weeks of the current standard-of-care with Peg-Interferon/Ribavirin. The results of re-treatment are disappointing. The addition of Boceprevir to the current standard-of-care has been shown to increase the efficacy of therapy in HCV mono-infected patients previously treated with a bi-therapy. Knowing that HIV/HCV co-infected patients are subject to more rapid hepatic fibrosis as well as to increased risks of cirrhosis, end-stage liver disease and hepatocellular carcinoma, it is important to improve the response rate of the re-treatment of hepatitis C in these patients. Subjects enrolled in this trial will have many predictive factors of failure: HIV co-infection, previous failure to Peg-Interferon/Ribavirin, HCV genotype 1 infection. One study reported a SVR rate of 9% after re-treatment with Peg-Interferon/Ribavirin in such patients. Another trial has shown a substantial increase of the response rate with a tri-therapy in HCV mono-infected patients. The investigators propose to carry out a multicentric, national, non-randomized phase II trial in 80 patients. The proportion of patients with F4 cirrhosis will have to be inferior to 50% of enrolled subjects. The number of null responders to a previous treatment (HCV RNA drop < 2 log10 at W12) and without F4 cirrhosis will have to be lower or equal to 20.

The primary objective of the study is to estimate, in Genotype 1 - HCV/HIV co-infected

patients, non responders to a previous therapy with Peg-Interferon/Ribavirin, the rate of SVR after 48 or 72 weeks of a three-drug regimen containing Peg-Interferon, Ribavirin and Boceprevir according to the Virologic Response and to compare the SVR rate to a threshold rate 20%, lowest rate to consider a therapeutic benefit in this population. A pharmacokinetic sub-study including 30 patients will be performed to estimate pharmacokinetic parameters of antiretroviral treatment (Atazanavir combined with Ritonavir, Raltegravir, Tenofovir) in combination with anti HCV treatment at baseline and W8 and pharmacokinetic parameters of Boceprevir at W8.

Eligibility

Minimum age: 18 Years. Maximum age: N/A. Gender(s): Both.

Criteria:

Inclusion Criteria:

- Adult ≥18 years

- HIV-1 infection

- Infection to genotype 1 HCV only

- Patients must have received at least 12 weeks of treatment with Peg-Interferon alfa

2a ≥ 135 µg / once weekly or Peg-Interferon alfa 2b ≥ 1,0 µg/kg/ once weekly + Ribavirin ≥ 600 mg daily and must have failed to treatment.

- Anti-HCV treatment stopped for at least 6 months

- Patients must be already treated at screen since at least 3 months with a stable

combination of antiretroviral treatment as following:

- Either tenofovir - emtricitabine, and atazanavir in combination with ritonavir

- Or tenofovir - emtricitabine, and raltegravir

- If patients cannot receive neither of the two antiretroviral regimens proposed,

for virologic, safety or toxicity reasons, patients could receive any effective antiretroviral therapy including : tenofovir, emtricitabine, lamivudine, atazanavir alone or in combination with ritonavir, raltegravir, abacavir. These patients are not allowed to take part in the pharmacokinetic sub-study.

- CD4 > 200/mm3 et >15%, at screen

- HIV-RNA < 50 copies/ml since at least 6 months at screen

- ≥ 40 Kg and ≤ 125 Kg

- Patients with any fibrosis grade. Proportion of F4 subjects should not excess 50% of

the overall subjects.

- Male and female subjects must agree to use acceptable methods of contraception 1

month prior to starting the study treatment and to continue until 7 months after the last doses of study drugs for male subjects and their partner(s), 4 months for female subjects.

- Subjects must be willing to give written informed consent for principal study (signed

at least at screen visit and prior to any study investigation)and + for the pharmacokinetic sub-study (for the concerned centers).

- Subjects must be willing to give written informed consent for biological collection.

- Subjects must be willing to give written informed consent for treatment of genetics

data.

- Subjects affiliated or beneficiary to a medical insurance.

Exclusion Criteria: History:

- Patients with cirrhosis (F4) and nul responders to prior treatment

- Cirrhosis classified Child-Pugh B or C or history of decompensated cirrhosis of the

liver. If Child A classification, significant varicose veins (grade 2 or 3) observed with a fibroscopy realized for < 3 years.

- History of ocular neuritis, retinal disorders, transplant

- Opportunistic infections (classification C), active or occurred within the 6 months

prior to baseline.

- History of neoplasia within the last 5 years, except cutaneous basocellular

carcinoma, recovering Kaposi's sarcoma, in situ cervical or anal canal cancer. Current condition:

- Co-infection with Hepatitis B virus

- Pregnancy and lactation

- Cardiac or severe pulmonary disease

- Untreated dysthyroidism

- Autoimmune disease contraindicating to an interferon treatment

- Severe haemoglobinopathies

- Any condition needing a systemic corticotherapy or an immunosuppressive treatment

- Evolutive current malignancy, including hepatocarcinoma which should be specifically

controlled prior to baseline.

- Alcohol consumption which may disturb the study participation according to the

investigator

- Drug addiction which may disturb the study participation according to the

investigator. Patients taking part to a substitution program with methadone or buprenorphine are allowed to be enrolled in the study. Biological criteria: • Haemoglobin < 12 g/dL (female) or < 13g/dL (male), Platelets < 90 000/mm3, Neutrophil count < 1500/mm3, Renal failure defined as creatinine clearance < 50ml/min, Uncontrolled thyroid function, HbA1c ≥ 7% in case of diabetes Criteria related to study drugs

- Contra-indication to Ribavirin, interferon treatment including psychiatric

contra-indications.

- History of discontinuation for intolerance to anti-HCV treatment. Patients with a

history of discontinuation for intolerance, especially anaemia or leuconeutropenia, and who were not treated with hematopoietic growth factor, are eligible

- Concomitant medication which may interfere with Boceprevir, atazanavir, ritonavir and

raltegravir pharmacokinetic

- St. John's-wort consumption

Locations and Contacts

CHU Sainte Marguerite, Marseille 13009, France
Additional Information

Starting date: May 2011
Last updated: October 10, 2014

Page last updated: August 23, 2015

-- advertisement -- The American Red Cross
 
Home | About Us | Contact Us | Site usage policy | Privacy policy

All Rights reserved - Copyright DrugLib.com, 2006-2017