CDH16 and papillary renal cell carcinoma: In renal cell tumors, CDH16 positivity was significantly more frequent in oncocytoma (104 of 106 positive, 98%) and chromophobe cancers (64 of 66, 97%) than in clear cell (384 of 452, 85%) and papillary renal cell carcinomas (105 of 138, 76%; p < 0.0001).