Other SMGs (IGF1R, ATAD2, ABI3BP, MSR1, ADAMTS9, ADAM19, KIF13B, DAB2, EIF4G3, GPR161, USP34, KCNK5, ACSS1, TGFBRAP1, RAB22A, XAB2, PEG10, IMPA1) have all been associated with other cancers: mutations in all of them except in RAB22A are reported in cSCC in the Catalogue Of Somatic Mutations In Cancer database (https://cancer.sanger.ac.uk/cosmic [accessed 7 January 2020]) (Tate et al., 2019). This evidence concerns the gene XAB2 and cancer.