PSMA7 and bladder transitional cell carcinoma: Consistent with the expected result, PSMA7 expression exhibited a positive relationship with MSI of KIRC, DLBC, TGCT, kidney renal papillary cell carcinoma (KIRP), LIHC, UCEC, and BLCA (Supplementary Fig. S7A), pointing to compromised DNA mismatch repair function in these tumors.