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Clinical Response to Venetoclax and Decitabine in Acute Promyelocytic Leukemia With a Novel RARA-THRAP3 Fusion: A
Baoquan Song1,2, Xin Wang1, Xin Kong1
1National Clinical Research Center for Hematologic Diseases, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China.
Abstract:
Variant acute promyelocytic leukemia (APL) showed quite different aspects, and the current treatments remained challenged at present. Venetoclax, a selective inhibitor of B-cell lymphoma 2 (BCL-2), is a small molecule that has been studied in several hematologic malignancies as both monotherapy and in combination with other agents. However, there is little of its use in the treatment of APL or variant APL. In this report, we identified THRAP3 as novel RARA fusion in resembling APL, which was resistant to all-trans retinoic acid (ATRA) combined arsenic trioxide (ATO) chemotherapy. Then, the patient was salvaged by low-dose venetoclax and decitabine. The treatment in this case demonstrates the potential ability of venetoclax in variant APL, thus providing a new treatment option for all kinds of APL.
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