To determine whether rs1259293 genotype was related to the expression level of FSTL1 in the kidney, we examined FSTL1 expression in formalin-fixed paraffin-embedded (FFPE) specimens of ccRCC and the paired adjacent pathologically normal renal tissues from 65 patients using immunohistochemistry (IHC). The gene discussed is FSTL1; the disease is nonpapillary renal cell carcinoma.