Study of A Combination Pill With GS-7977 and GS-5885 for Hepatitis C in People With HIV

HIV Clinical Trial

Official title:

An Open Label Trial to Assess Safety, Tolerability, and Efficacy of the Fixed Dose Combination of GS-7977 and GS-5885 in HCV Genotype 1 Subjects Coinfected With HIV

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT01878799
• Other study ID #: 130159
• Secondary ID: 13-I-0159
• Status: Completed
• Phase: Phase 2
• First received: June 14, 2013
• Last updated: September 24, 2015
• Start date: June 2013
• Est. completion date: September 2014

Study information

• Verified date: September 2014
• Source: National Institutes of Health Clinical Center (CC)
• Contact: n/a
• Is FDA regulated: No
• Health authority: United States: Federal Government
• Study type: Interventional

Clinical Trial Summary

Background:

• Present treatment for hepatitis C includes the use of a weekly injection and two different pills. This treatment is associated with serious side effects. Drugs that can be taken by mouth and cure HCV infection without serious side effects would be a great help to the large number of people infected with HCV. GS-7977 and GS-5885 are new medications being developed to treat the hepatitis C virus (HCV) infection. They are still being researched and are not approved by the Food and Drug Administration. They are being developed as treatment for hepatitis C as a single pill taken once a day.

Objectives:

• To determine whether a combination of the two study drugs can safely and effectively treat HCV infection in people with HIV infection and who do not have cirrhosis of the liver.

Eligibility:

• Individuals who have HIV infection and have liver disease caused by infection with HCV.

Design:

• Participants will be screened with a physical exam and medical history. Blood samples will be collected. Urine samples will be collected from participants who might become pregnant. If a participant has not had a liver biopsy in the past 3 years, one will be required.

• Participants will take one pill daily for 12 weeks. This pill will be a combination of the two study drugs.

• Treatment will be monitored with frequent clinic visits and blood tests over a total of 60 weeks.

Description:

Chronic hepatitis C virus (HCV) infection is a major public health problem with an estimated 180 million people infected worldwide. In the US an estimated 4.1 million people are infected with HCV which is the principal cause of death from liver disease and leading indication for liver transplantation. Significant advances have been made with the approval of directly acting antivirals (DAA) namely the protease inhibitors, telaprevir (TVR) and boceprevir (BOC) which have been shown to significantly improve rates of sustained virologic response (SVR). Response rates to these new combinations in HIV/HCV are also very promising, however treatment has been characterized with high rates of toxicities.

Recently several trials have confirmed the efficacy of potent DAA therapy without concomitant IFN in the treatment of HCV monoinfected individuals. Given the improved response rates achieved with a combination of DAAs with fast HCV suppression and improved side-effect profiles; and the need for better therapy for HIV/HCV co-infected subjects, we propose a study to determine the safety, tolerability and efficacy of 12 weeks of treatment with a fixed dose combination of GS-7977 and GS-5885 in HIV/HCV Genotype 1 (GT-1) subjects. We hypothesize that anti-HCV therapy that does not rely on the host immune system will provide an enhanced rate of SVR among HIV/HCV GT-1 coinfected subjects. The findings from this study will aid in our understanding of determinants of response to an IFN-free regimen in HIV/HCV coinfected individuals.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 63
• 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:

1. Eighteen years of age or older at screening.

2. HCV treatment-na(SqrRoot) ve, as defined as no prior exposure to any IFN, RBV, or other approved or experimental HCV-specific direct-acting antiviral agent.

3. Participants must be willing to practice either:

1. Abstinence from sexual intercourse or

2. At least 2 forms of contraception including one barrier method from 2 weeks prior to Day 0 through 30 days after the last dose is received.

i. Female partners of male study subjects may rely upon hormonal contraception as one of the 2 methods; however female study subjects may not.

4. Chronic hepatitis C infection defined as one of the following:

1. Positive for anti-HCV antibody, HCV RNA, or an HCV genotype at least 6 months before screening, and positive for HCV RNA and anti-HCV antibody at the time of screening or

2. Positive for anti-HCV antibody and HCV RNA at the time of screening with a liver biopsy consistent with chronic HCV infection (or a liver biopsy performed before enrollment with evidence of chronic hepatitis C disease, such as the presence of fibrosis).

5. HIV treatment status:

1. Documented HIV infection, ARV untreated for > 8 weeks preceding dosing and having either:

1. a CD4 T-cell count greater than or equal to 500 cells/mm3 within 8 weeks of Day 0 or

2. an HIV viral load less than 500 copies/mL with a stable CD4 count for at least 3 months.

2. Documented HIV infection on a stable, protocol-approved, ARV regimen for greater than or equal to 8 weeks prior to dosing and is expected to continue the current ARV regimen through the end of study with all of the following:

1. a CD4 T-cell count > 100 cells/mm3

2. a documented plasma HIV-1 RNA level less than the level of detection for at least 8 weeks preceding dosing.

If the lower limit of detection of the local HIV-1 RNA assay is < 50 copies/mL (e.g.,< 20 copies/mL), the Screening plasma HIV-1 RNA level cannot exceed 50 copies/mL.

3. HIV ARV agents including only combination regimens consisting of medications from the following list: tenofovir (TDF), emtricitabine (FTC), efavirenz, raltegravir, and rilpivirine administered according to their manufacturer s prescribing information. (reference Section 10.3 for additional information)

6. Documentation of hepatitis C genotype 1a, 1b or mixed 1a/1b

7. Absence of cirrhosis, defined as one of the following:

1. A liver biopsy performed within 36 calendar months of screening showing absence of cirrhosis.

2. FibroTest score of < 0.48 AND APRI of < 1 performed during the 8 weeks preceding dosing (In the absence of a definitive diagnosis of presence or absence of cirrhosis by the above criteria, a liver biopsy is required).

8. Able to effectively communicate with the Investigator and other center personnel.

9. Willing to give written informed consent and comply with the study restrictions and requirements.

10. If opioid-dependent, subjects must be participating in a supervised treatment.

11. Participants must have a primary medical provider outside of OP8 and the NIH for medical management.

EXCLUSION CRITERIA:

Subjects who meet any of the following exclusion criteria are not to be enrolled in this study:

1. Current or prior history of any of the following:

1. Clinically significant illness (other than HCV) or any other major medical disorder that may interfere with subject treatment, assessment or compliance with the protocol; subjects currently under evaluation for a potentially clinically-significant illness (other than HCV) are also excluded.

2. Gastrointestinal disorder or post-operative condition that could interfere with the absorption of the study drug.

3. Poor venous access interfering with required study blood collection.

4. Clinical hepatic decompensation (i.e., ascites, encephalopathy or variceal hemorrhage).

5. Solid organ transplantation.

6. Significant pulmonary disease, significant cardiac disease or porphyria.

7. Unstable psychiatric disease (Subjects with psychiatric illness that is well-controlled on a stable treatment regimen or currently not requiring medication may be included).

8. Any malignancy or its treatment that in the opinion of the PI may cause ongoing interference with host immunity; subjects under evaluation for malignancy are not eligible.

9. Significant drug allergy (such as anaphylaxis or hepatotoxicity).

10. Chronic liver disease of a non-HCV etiology (e.g., hemochromatosis, Wilson s disease, alfa-1 antitrypsin deficiency, cholangitis).

11. Patients with renal impairment or uncontrolled medical problems that could place them at high risk for developing renal impairment.

2. Positive test at screening for either HBsAg or quantifiable HBV DNA (completed only if necessary to rule out chronic HBV)

3. Current use of non-protocol approved ARVs.

4. A new AIDS-defining condition diagnosed within 30 days prior to screening or active, serious infection (other than HIV or HCV) requiring parenteral antibiotics, antivirals or antifungals within 30 days prior to Day 0.

5. Cirrhosis of the liver

6. Screening or baseline ECG with clinically significant ECG findings.

7. Abnormal hematological and biochemical parameters, including:

1. Neutrophil count < 750 cells/mm(3)

2. Hemoglobin < 9 g/dL. If Hgb is < 11g/dL in women or < 12 g/dL in men. Other causes of anemia should be excluded as medically indicated.

3. Platelet count less than or equal to 50,000 cells/mm(3)

4. Estimated GFR (calculated by the CKD-EP(I) equation) < 50 mL/min/per 1.73 m(2) if not on ARV or < 60 mL/min if on ARVs

5. ALT or AST greater than or equal to 10 times ULN

6. Serum lipase greater than or equal to 1.5 times ULN (at screening or during the screening period)

7. Direct bilirubin greater than or equal to 1.50 times ULN

8. Albumin less than or equal to 3.0 g/dL

9. INR greater than or equal to 1.5 times ULN unless subject has known hemophilia or is stable on an anticoagulant regimen affecting INR.

8. Donation or loss of more than 400 mL blood within 8 weeks prior to first dose administration.

9. Poorly controlled diabetes mellitus indicated by hemoglobin A1C > 10% at screening for known diabetics.

10. Known hypersensitivity to, GS-5885, GS-7977, or formulation excipients.

11. Pregnant/Breastfeeding women.

12. Co-enrollment in other clinical trials is restricted, and requires approval of the Investigator.

Study staff should be notified of co-enrollment status.

13. Need for use of the following medications from 21 days prior to the start of study drugs through the end of treatment:

1. Hematologic stimulating agents (e.g. erythropoiesis-stimulating agents (ESAs); granulocyte colony stimulating factor (GCSF); thrombopoietin (TPO) mimetics)

2. Chronic systemic immunosuppressants including, but not limited to, corticosteroids (prednisone equivalent of > 10 mg/day for > 2 weeks), azathioprine, or monoclonal antibodies (e.g., infliximab)

3. Investigational agents or devices for any indication

4. Medications for disease conditions excluded from the protocol (e.g., active cancer, transplantation) are not listed under this Concomitant Medication section and are disallowed in the study.

5. Concomitant use of certain medications or herbal/natural supplements per PI discretion expected to result in pharmacokinetic interactions resulting in increases or decreases in exposure of study drug(s) as listed in Table of this protocol.

Study Design

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

Related Conditions & MeSH terms

• Hepatitis
• Hepatitis C
• HIV

Intervention

Drug:
• GS-7977/GS- 5885 FDC
The GS-7977/GS-5885 FDC product combines a potent HCV nucleotide inhibitor and a potent HCV NS5A inhibitor and will be given for 12 weeks.

Locations

Country	Name	City	State
United States	National Institutes of Health Clinical Center, 9000 Rockville Pike	Bethesda	Maryland

Sponsors (1)

Lead Sponsor	Collaborator
National Institute of Allergy and Infectious Diseases (NIAID)

Country where clinical trial is conducted

United States, 

References & Publications (3)

Alter MJ, Kruszon-Moran D, Nainan OV, McQuillan GM, Gao F, Moyer LA, Kaslow RA, Margolis HS. The prevalence of hepatitis C virus infection in the United States, 1988 through 1994. N Engl J Med. 1999 Aug 19;341(8):556-62. — View Citation

Armstrong GL, Wasley A, Simard EP, McQuillan GM, Kuhnert WL, Alter MJ. The prevalence of hepatitis C virus infection in the United States, 1999 through 2002. Ann Intern Med. 2006 May 16;144(10):705-14. — View Citation

Kim WR. The burden of hepatitis C in the United States. Hepatology. 2002 Nov;36(5 Suppl 1):S30-4. Review. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	To assess the safety, tolerability and efficacy of a fixed dose combination (FDC) of GS-7977/GS-5885 tablets for 12 weeks in HIV/HCV GT-1 coinfected subjects who are IFN-treatment na(SqrRoot) ve.		Day 0, Day 1, Day 3, Day 5, Day 7, Day 10,Week 2, Week 3, Week 4, Week 6, Week 8, Week 12, Week 14, Week 16, Week 20, Week 24, Week 36, Week 48, Week 60	Yes
Secondary	To assess the fitness of NS5A/B viral mutants in vivo in the presence or absence of a fixed dose combination of GS-7977/ GS-5885 in vitro by performing NS5A/B site directed mutagenesis.		At study completion	No
Secondary	To compare HCV quasispecies evolution from baseline and throughout 12 weeks of treatment (especially during relapse or viral breakthrough) and assess the influence on virologic response to treatment in HIV/HCV GT-1 coinfected patients.		At study completion	No
Secondary	To compare the immunologic, virologic and host genetic/proteomic predictors of response to treatment with a fixed dose combination of GS-7977/GS-5885 in subjects treated for 12 weeks.		At study completion	No