title: Comparative study of three doses of interferon-alpha 2a in chronic active hepatitis B. The International Hepatitis Trial Group.
abstract: To determine the efficacy of interferon-alpha 2a in chronic active hepatitis B, 238 patients were randomly divided, into four groups: three groups received either 2.5 MIU m-2, 5.0 MIU m-2 or 10.0 MIU m-2, three times weekly by intramuscular injection for 12-24 weeks; and a control group received no treatment. Patients were followed for up to 12 months after treatment was discontinued. There was a statistically significant difference in response [clearance of hepatitis B e antigen (HBeAg) and hepatitis B viral DNA (HBV-DNA)] between treated and untreated patients (37 vs 13%) but no statistically significant difference was seen between treatment groups (33%, 34% and 43% for the 2.5, 5.0 and 10.0 MIU m-2 groups, respectively). A transient rise in transaminases (seroconversion hepatitis) was seen in responders, but levels returned to within the normal range after response to treatment. In patients responding to interferon therapy there was a significant reduction in the severity of the hepatitis. Interferon-alpha 2a was generally well tolerated with respect to vital signs and laboratory parameters.
authors.affiliation: St Mary's Hospital, London, UK.
authors.forename: H C
authors.initials: HC
authors.lastname: Thomas
authors.forename: A S
authors.initials: AS
authors.lastname: Lok
authors.forename: V
authors.initials: V
authors.lastname: Carreño
authors.forename: G
authors.initials: G
authors.lastname: Farrell
authors.forename: H
authors.initials: H
authors.lastname: Tanno
authors.forename: V
authors.initials: V
authors.lastname: Perez
authors.forename: G M
authors.initials: GM
authors.lastname: Dusheiko
authors.forename: G
authors.initials: G
authors.lastname: Cooksley
authors.forename: J C
authors.initials: JC
authors.lastname: Ryff
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000410:Alanine Transaminase / Q000097:blood; D004305:Dose-Response Relationship, Drug; D005260:Female; D006509:Hepatitis B / Q000628:therapy*; D006521:Hepatitis, Chronic / Q000628:therapy*; D006801:Humans; D000077190:Interferon alpha-2; D016898:Interferon-alpha / Q000009:adverse effects / Q000276:immunology / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D011994:Recombinant Proteins
chemical_list: D000077190:Interferon alpha-2; D016898:Interferon-alpha; D011994:Recombinant Proteins; D000410:Alanine Transaminase