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Thymosin Plus PEG-Interferon in Non-Cirrhotic Hepatitis C Patients Who Did Not Respond to Interferon or Interferon Plus Ribavirin

This study has been completed.
Information provided by:
SciClone Pharmaceuticals Identifier:
First received: June 18, 2002
Last updated: January 8, 2008
Last verified: January 2008

Chronic hepatitis C infection is one of the leading causes of chronic liver disease in the United States. Approximately one-third of patients with hepatitis C infection develop cirrhosis of the liver, which can lead to liver failure or liver cancer. The current treatment for hepatitis C infection in previously untreated patients is successful in only about half of patients. There is no established therapy for non-responders.

This is a randomized, double-blinded, multicenter trial to determine the effectiveness of thymosin alpha 1 (thymalfasin) 1.6 mg twice weekly plus PEGinterferon alfa-2a 180 ug/wk compared to placebo plus PEGinterferon alfa-2a in adults with chronic hepatitis C without cirrhosis who are non-responders to previous treatment with interferon or interferon plus ribavirin. The definition of non-response requires a positive HCV RNA test at the end of a course of at least 12 weeks of therapy. Patients will receive treatment for 12 months, and will be followed-up for a further 6 months after the end of therapy.

Condition Intervention Phase
Hepatitis C
Hepatitis C, Chronic
Drug: thymalfasin (thymosin alpha 1) + PEGinterferon alfa-2a
Drug: placebo + PEGinterferon alfa-2a
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double-Blind
Primary Purpose: Treatment

Resource links provided by NLM:

Further study details as provided by SciClone Pharmaceuticals:

Estimated Enrollment: 500
Study Start Date: April 2002

Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion criteria:

  • Signed written informed consent.
  • Age over 18 years old.
  • Presence of HCV RNA measured by qualitative PCR.
  • Nonresponder to a previous course of therapy with either IFN alone or IFN plus ribavirin. The patient must have been treated for at least 12 weeks.
  • Washout period of at least 6 months from previous therapy with IFN alone or IFN plus Ribavirin.
  • Liver biopsy consistent with chronic hepatitis C within the last 12 months before treatment starts, and at least 6 months after the end of the prior failed therapy.
  • No clinical or histological evidence of cirrhosis (METAVIR fibrosis score 0 to 3).
  • Compensated liver disease with prothrombin time prolonged less than 3 seconds over control, serum albumin stable and within normal limits, total bilirubin < 2 mg/dl, and no history of hepatic encephalopathy, esophageal varices or ascites.
  • Ultrasound, CT scan, or MRI of the liver within 3 months of entry negative for HCC.
  • Hematocrit > 30%, platelet count > 100 x 109/L, WBC > 3 x 109/L, and polymorphonuclear white cell count > 1.5 x 109/L.
  • Adequate renal function as demonstrated by serum creatinine level < 2.0 mg/dL.
  • Normal TSH or adequately controlled thyroid function.
  • If the patient is a woman, she is using a definitive method of birth control in consultation with her physician, or is surgically sterile or post-menopausal.

Exclusion criteria:

  • Use of systemic corticosteroids within 6 months of entry.
  • Current use of any drug known to be hepatotoxic, any drug (other than the study drugs) known to have or suspected of having therapeutic activity in hepatitis C or of any immunosuppressive drug (including corticosteroids).
  • Any other liver disease including hepatitis B, hepatitis delta, alcoholic liver disease, drug-induced liver injury, primary biliary cirrhosis, sclerosing cholangitis, autoimmune hepatitis, hemochromatosis, alpha 1-antitrypsin deficiency, or Wilson's disease.
  • Alpha-fetoprotein > 200 ng/mL.
  • Current or past diagnosis of cirrhosis.
  • Evidence of portal hypertension either by Doppler ultrasonography or gastrointestinal endoscopy.
  • Decompensated liver disease based on a history of hepatic encephalopathy, esophageal varices, or ascites.
  • HIV infection diagnosed by HIV seropositivity and confirmed by Western blot.
  • Concomitant or prior history of malignancy other than curatively treated skin cancer or surgically cured in situ carcinoma of the cervix.
  • Active infectious process other than HCV that is not of a self-limited nature (eg. TB or AIDS).
  • Rheumatoid arthritis or other autoimmune disease (serum ANA > 1:160).
  • Pregnancy as documented by a urine pregnancy test.
  • Alcohol or intravenous drug abuse within the previous 1 year.
  • Chronic use of methadone.
  • Patients who are poor medical risk or who have any non-malignant systemic disease that, in the opinion of the investigator, would make it unlikely that the patient could complete the protocol.
  • Patients with a history of severe depression that required either hospitalization or electroshock therapy; or depression associated with suicide attempt.
  • Patients with significant pre-existing cardiac or pulmonary disease.
  • Any indication that the patient would not comply with the conditions of the study protocol.
  • Previous treatment with thymosin alpha 1.
  • Patients with known hypersensitivity to IFNa.
  • Simultaneous participation in another investigational drug study, or participation in any clinical trial involving investigational drugs with 3 months before study entry.
  • Family history of intracerebral hemorrhage.
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Please refer to this study by its identifier: NCT00040027

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Sponsors and Collaborators
SciClone Pharmaceuticals
  More Information Identifier: NCT00040027     History of Changes
Other Study ID Numbers: Ta1-CHC-2K0803a
Study First Received: June 18, 2002
Last Updated: January 8, 2008

Keywords provided by SciClone Pharmaceuticals:
hepatitis C
hepatitis C, chronic

Additional relevant MeSH terms:
Hepatitis A
Hepatitis C
Hepatitis C, Chronic
Liver Diseases
Digestive System Diseases
Hepatitis, Viral, Human
Virus Diseases
Enterovirus Infections
Picornaviridae Infections
RNA Virus Infections
Flaviviridae Infections
Hepatitis, Chronic
Peginterferon alfa-2a
Adjuvants, Immunologic
Immunologic Factors
Physiological Effects of Drugs
Antineoplastic Agents
Antiviral Agents
Anti-Infective Agents processed this record on April 26, 2017