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  • Title: Failure of hepatitis B vaccination in patients receiving lamivudine prophylaxis after liver transplantation for chronic hepatitis B.
    Author: Lo CM, Liu CL, Chan SC, Lau GK, Fan ST.
    Journal: J Hepatol; 2005 Aug; 43(2):283-7. PubMed ID: 15964658.
    Abstract:
    BACKGROUND/AIMS: Lamivudine prophylaxis against hepatitis B virus (HBV) reinfection after liver transplantation is associated with recurrence due to escape mutants. METHODS: Fifty-two patients on lamivudine prophylaxis at a median of 412 days (median, 370-2040 days) after transplantation for chronic HBV-related liver disease received two courses of an accelerated schedule of double-dose recombinant HBV vaccine. Before vaccination, all patients were seronegative for HBsAg, anti-HBs and HBV DNA (by qPCR). Three intramuscular doses of vaccine (40 microg each) were administered monthly and another identical course was repeated after 3 months. Lamivudine (100mg/day) was continued throughout the study. RESULTS: After the first course, two patients developed a weak response (anti-HBs titre of 12 mIU/mL) that disappeared rapidly. One early responder developed anti-HBs (27 mIU/mL) again after the second course but the other did not. Two other patients developed response (anti-HBs titre of 17 and 103 mIU/mL, respectively) giving an overall response rate of 7.7%. The antibody level declined rapidly. At the end of the study, one patient who did not respond had developed viral breakthrough which was treated with adefovir dipivoxil therapy. CONCLUSIONS: Active immunization with two courses of double-dose recombinant HBV vaccine has limited efficacy in patients receiving lamividine prophylaxis after liver transplantation.
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