Abstract
A study is currently underway to investigate the efficacy of interferon therapy in patients with prolonged (greater than or equal to 10 weeks but less than 6 months) hepatitis B infection. To date, a total of 15 patients have been enrolled in the study and randomly assigned to receive either placebo for 24 weeks (n = 8) or interferon 5 million units subcutaneously 3 times a week for 24 weeks (n = 7), with follow up for 1 year. Thirteen patients have completed the follow-up period: seven patients in the placebo group and six in the treated group. Five of the six treated patients completely eradicated the infection during interferon therapy, with clearance of hepatitis B e and surface antigens, and seroconversion to antibody positivity in each case. Two of the eight placebo patients seroconverted during the placebo period. Clearance of hepatitis B e antigen was associated with a sudden rise in serum transaminase levels and an exacerbation of hepatitis, a phenomenon that has also been reported in chronic hepatitis B patients who have responded well to interferon therapy. Therapy was well tolerated in all cases. Our results suggest that interferon treatment of patients with prolonged hepatitis B infection may prevent progression to chronicity. If confirmed by further study, they should trigger more vigilant screening for patients with raised serum transaminase levels and viral markers of hepatitis B infection.
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