Hepatitis B viral reactivation secondary to imatinib treatment in a patient with gastrointestinal stromal tumor. Hepatitis B virus (HBV) reactivation is a known risk in cancer patients receiving cytotoxic or immunosuppressive therapy; however, the risk associated with newer molecularly-targeted agents has not been well-quantified. Imatinib, a small molecule inhibitor directed against BCR-ABL, CKIT, and other tyrosine kinases, has been associated with HBV reactivation primarily in patients treated for chronic myelogenous leukemia. Herein we present the first reported case of a patient who developed HBV reactivation while receiving imatinib therapy for a gastrointestinal stromal tumor (GIST) in the adjuvant setting.
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