Immunoprecipitation by RKIP of the urine sample of one HS, one CKD and one ccRCC patient was done, then blotting by RKIP or by p-RKIP monoclonal antibody to phosphoserine 153 (pS153), required for RKIP dimerization. The gene discussed is PEBP1; the disease is nonpapillary renal cell carcinoma.