Our results indicated that MSI-H occurred the most frequently in UCEC, lymphoid neoplasm diffuse large B-cell lymphoma (DLBC), and COAD (Figure S4), and CMTM6 expression was positively associated with MSI-H in COAD, ESCA, SARC, and STAD. This evidence concerns the gene CMTM6 and diffuse large B-cell lymphoma.