Impending liver failure after chemoimmunotherapy-induced reactivation of hepatitis B - successful treatment with entecavir

History and clinical findings: An 83-year old woman had been treated with bendamustin and rituximab for prolymphocytic leukemia. Two weeks after cycle 6 of chemotherapy, signs and symptoms of a severe hepatitis occurred. Investigations: Highly elevated values for AST (1353 U/1) and bilirubin (27.8 mg/dl), impaired coagulation parameters (INR 1,68) and the detection of ascites led to the diagnosis of an impending liver failure induced by reactivation of a hitherto unknown hepatitis B (HBs antigen pos., HBe antigen pos., anti HBc IgG pos., HBV DNA 1,65 Mio copies/ml). Treatment and course: After an immediately started treatment with entecavir (0.5 mg/d po), symptoms and laboratory parameters rapidly improved. 4 months later liver chemistry was completely normal and HBV DNA was negative. After 8 months, a seroconversion to anti HBs was noted. Conclusion: In single cases, life threatening complications of chemotherapy induced reactivation of hepatitis B may be successfully treated by potent and stabile nucleosidanalogs.