Study of Quadruple Therapy With Eltrombopag for Chronic Hepatitis C (SQUELCH-C)

The University of Texas System (UT)

Status and phase: Terminated; Phase 3; Phase 2

Conditions: Thrombocytopenia; Hepatitis C

Treatments: Drug: Eltrombopag

Study type: Interventional

Funder types: Other; Industry

Identifiers

NCT01821625

STU 032013-020

Details and patient eligibility

About

This study will provide chronic hepatitis C patients with low platelets (less than 75x10^9/L) the opportunity to undergo treatment and possible cure of their virus. The main hepatitis C drugs will be administered as standard of care, with the addition of the study drug eltrombopag.

The investigators hypothesize that providing eltrombopag to chronic hepatitis C patients with low platelets (less than 75x10^9/L) will permit the initiation and completion of antiviral triple therapy with boceprevir, ribavirin, and pegylated-interferon.

Full description

SQUELCH-C is an investigator-initiated, single arm, non-blinded pilot study on the use of eltrombopag in combination with ribavirin, pegylated-interferon, and boceprevir, for patients who would not otherwise be treatment candidates because of low platelet counts (less than 75x10^9/L).

Administration of the drugs ribavirin and boceprevir will be standard of care, with one exception for interferon.

The total drug treatment period for the study patient will range from 32 - 56 weeks, depending on liver disease stage and viral response. Follow-up will take place at 12 and 24 weeks post treatment to evaluate for sustained viral response. Total study participation may require 1.5 years.

Enrollment: 7 patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Male and female patients at least 18 years of age.
• Require a platelet count below 75 x 10^9 /L at time of screening.
• The patients must meet the eligibility criteria for all drugs involved.
• Only genotype 1 (a, b, indeterminate, or mixed).
• Confirmed history of chronic hepatitis C.
• Cirrhotic patients will be included.
• Liver imaging within 1 year to exclude hepatocellular carcinoma (HCC) is required in patients with cirrhosis.
• Patients without evidence of cirrhosis but meeting platelet criteria will also be admitted to study.
• Subjects must be able to provide informed consent, comply with drug administration instructions, and be able to complete each study visit.
• Ability to cover costs of ribavirin, interferon, and boceprevir will also be required.
• Female subjects are eligible if: Non-pregnant, non-childbearing potential, or of childbearing potential and willing to perform complete abstinence or correctly use a form of birth control during intercourse [barrier method, intrauterine device, hormonal therapy, or surgical sterilization in females or male partner]. They must also be willing to have pregnancy tests performed every 4- weeks until 6 months after completion of ribavirin.
• Male study participants must agree to use a condom and their female partner must partake in one of the contraceptive methods discussed above until 6 months after completion of ribavirin therapy.

Exclusion criteria

• A history of chronic infection (i.e., HIV or HBV) or a previous organ transplantation.
• A history of a platelet disorder.
• A poorly controlled underlying medical illness (i.e., diabetes, hypertension, coronary artery disease, congestive heart failure, etc.).
• Any contraindication to any study drugs as mentioned in their respective prescribing information.
• Patients with decompensated cirrhosis defined as current evidence for ascites, encephalopathy, infection or variceal bleeding. All patients should be considered Child-Pugh Class A.
• Patients with aminotransferase levels ≥ 500 IU/L will be excluded on presumption of another active liver disease.
• Patients must not be pregnant or nursing.
• The study physician maintains the right to exclude a patient for a medical condition not listed above or based off laboratory values indicating chronic disease discovered at screening.
• Patients with eye disease may be excluded from this study if the ophthalmologist does not recommend treatment.
• Subjects with known hypersensitivity reactions (such as Stevens-Johnson syndrome, toxic, epidermal necrolysis, and erythema multiforme to ribavirin) to study drugs or any component of the products.
• Subjects with autoimmune hepatitis, hemoglobinopathies (e.g., thalassemia major, sickle-cell anemia), creatinine clearance less than 50 mL/min.
• Co-administration of drugs that are highly dependent on CYP3A4/5 for clearance and CYP3A4/5 inducers (See Table 2 in boceprevir prescribing information).

Trial design

Primary purpose: Treatment

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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7 participants in 1 patient group

Thrombocytopenic (Low Platelet) Patients

Experimental group

Description:

All study patients will undergo intervention in this study. The intervention will be a lead-in with eltrombopag and antiviral triple therapy (interferon, ribavirin and boceprevir).

Treatment:

Drug: Eltrombopag