We next investigated the mutation data for 24 important genes (TP53, VHL, PBRM1, SETD2, KDM5C, BAP1, NF2, PTEN, ARID1A, MICALCL, STAG2, SLC1A3, CDKN1A, MTOR, MET, SMARCB1, TCEB1, NFE2L2, PIK3CA, MLL3, FH, FLCN, TSC1, TSC2) recurrently mutated in the three TCGA kidney cancer subtypes based on the three TCGA kidney cancer studies17, 22, 24. The gene discussed is STAG2; the disease is kidney cancer.