SOD1 and sarcoma: FALS occurs in mendelian-inherited mutations of the following genes: Cu/Zn superoxide dismutase (SOD1), TAR-DNA–binding protein 43 (TDP-43), fused in sarcoma/translocated in liposarcoma (FUS/TLS) and the chromosome 9 open reading frame 72 gene (C9orf72) [93,98].