A 25-year-old man presented...cytometry analysis confirmed involvement by T-lymphoblastic leukemia/lymphoma...An FGFR1 (8p11) gene rearrangement was detected in the lymph node...Cytogenetics revealed t(8;13) in the bone marrow (panel D)...myeloid neoplasms exhibit chemoresistance to first- and second-generation tyrosine kinase inhibitors (TKIs).