FLT3 and myelodysplastic syndrome: The comprehensive detection results of MDS-related genes were as follows: FLT3 gene FLT3-ITD frame insertion/repetition mutation (mutation abundance 4.87%), U2AF1 gene p.S34F hot spot mutation (mutation abundance 35%), DNMT3A gene p.R882H hot spot mutation (mutation abundance 34.4%), and SMC3 p.R381Q missense mutation (mutation abundance 32.2%), and an increased number of copies of the KMT2A gene (chr11q23.3) in some regions (exons 2–8, approximately 13.9 kb in length; >2 copies).