SIRPG and cancer: Regarding MSI, we observed a negative association between SIRPG expression and MSI in most cancer types, including ACC, BLCA, BRCA, CESC, CHOL, DLBC, ESCA, GBM, HNSC, KIRP, LIHC, LUAD, LUSC, MESO, OV, PAAD, PCPG, READ, SARC, SKCM, STAD, TGCT, and THYM (Fig. S2B).