SF3B1 and myelodysplastic syndrome: compared de novo SF3B1 mutant MDS (SF3B1mutde novo MDS) with SF3B1 mutant t-MDS (SF3B1mut t-MDS), SF3B1mut t-MDS with SF3B1 wild-type t-MDS (SF3B1wt t-MDS) groups were compared and found that even in the case of t-MDS, MDS with SF3B1 mutation was suggestively associated with a good prognosis in terms of median OS as well as cytogenetics, validating the prognostic situation of MDS-SF3B1 proposed by IWG-PM in t-MDS (97).