Chromosomal 8p11 abnormalities with Fibrocyte growth factor receptor 1 (FGFR1) rearrangement is a rare hematopoietic disorder with widespread clinical and pathologic features, including myeloproliferative neoplasms (MPN), myelodysplastic syndrome (MDS), and MPN/MDS, often associated with eosinophilia, lymphadenopathy, usually T-lymphoblastic lymphoma/leukemia (T-LBL), and progression to acute myeloid leukemia (AML) [1]. The gene discussed is FGFR1; the disease is myeloproliferative neoplasm.