The most prevalent focal copy number alterations in myeloid neoplasms were deletions of TP53 (n = 42, 5%), JAK2 (n = 44, 5%), FLT3 (n = 17, 2%), TET2 (n = 16, 2%), and EZH2 (n = 16, 2%). The gene discussed is FLT3; the disease is myeloid neoplasm.