CA9 and cancer: CAIX FL% distribution in TC-RNA was significantly different (chi-square, p < 0.001) between controls (37.5%, >10% cutoff) and urogenital tumors (96.2%, >10% cutoff) as well as among cancer types (bladder: 100.0%, p < 0.001; kidney: 85.7%, p = 0.033; prostate: 90.0%, p = 0.008).