RT Journal Article SR Electronic T1 Use of Tumor Necrosis Factor-α-blocking Agents in Hepatitis B Virus-positive Patients: Reports of 3 Cases and Review of the Literature JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP jrheum.081246 DO 10.3899/jrheum.081246 A1 Stefania Zingarelli A1 Micol Frassi A1 Chiara Bazzani A1 Mirko Scarsi A1 Massimo Puoti A1 Paolo Airò YR 2009 UL http://www.jrheum.org/content/early/2009/05/13/jrheum.081246.abstract AB Objective To evaluate the development of hepatitis B virus (HBV) infection in patients receiving tumor necrosis factor-α-blocking agents (TNFBA), and to evaluate whether lamivudine (LAM) prophylaxis can reduce the risk of viral reactivation in inactive HBsAg carriers. Methods Local experience and published reports were reviewed. Patients with HBV infection were classified as having chronic HBV hepatitis, or being inactive HBsAg carriers or occult carriers. Results Three patients in our series and 24 patients in the literature were identified: 2 had active HBV-associated disease, 23 were inactive HBsAg carriers, and 2 occult carriers. When exposed to TNFBA, HBsAg-inactive carriers pretreated with LAM had lower risk of having detectable HBVDNA (p = 0.02) or viral reactivation (p = 0.046) than those without LAM prophylaxis. In 3 patients who discontinued TNFBA, LAM prophylaxis was also discontinued 10–12 months thereafter without hepatitis flares. Two cases of reactivation in occult carriers (HBsAg-negative, anti-HBs+, anti- HBc+) were described in the literature. Conclusion TNFBA should be avoided in patients with active HBV replication and should be used with caution in inactive HBsAg carriers. In these patients, the risk of viral reactivation seems to be high, but it might be reduced by prophylactic LAM, which should probably be given for a long time when TNFBA are discontinued (e.g., 12 mo). Potential occult carriers might carry a low, but not negligible, risk of viral reactivation. They should therefore be monitored with particular care.