MYSM1 and bone marrow failure syndrome: MYSM1 mutation, related to bone marrow failure syndrome 4 (OMIM #618 116), can drive ferroptosis in HSC.[39]MYSM1 was widely expressed in different HSPC subsets (Figure S9A, Supporting Information), and HD‐derived HSPC expressed higher levels of MYSM1 than their AA counterparts (Figure S9B, Supporting Information), further confirming the role of ferroptosis in patients with AA.