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Background: Extramedullary blast crisis (EBC) of T315I BCR-ABL mutated chronic myelogenous leukemia (CML) is extremely rare.
Methods: We report an unusual case characterized by fever, right shoulder swelling, pleural effusion, and multiple bone destruction as the first signs of EBC of T315I BCR-ABL mutated CML.
Results: The patient did not respond to chemotherapy consisting of anthracyclines, cytarabine and etoposide. His condition improved after the treatment with ponatinib combined with allogenic stem cell transplantation (alloHCT), but soon worsened after ponatinib withdrawal. He got slight relief after he continued ponatinib.
Conclusions: Ponatinib is an important treatment to control EBC even after allo-HCT.
DOI: 10.7754/Clin.Lab.2017.170807
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