We previously reported marked downregulation of the iron transporter ABCB7 in MDS patients with RS.11 In this study, we identified a significant A3SS event (false discovery rate=0.006, inclusion level difference=−0.184) in the ABCB7 gene in the comparison of SF3B1-mutant with controls. The gene discussed is ABCB7; the disease is myelodysplastic syndrome.