PDCD1 and nonpapillary renal cell carcinoma: As can be seen in these tables, PDCD1 and PD-L1 polymorphisms, selected for examination, were not in LD with each other, except for rs4143815G>C and rs4742098A>G in PD-L1 gene, for which the weak LD was observed (r2 = 0.537 and r2 = 0.558 for controls and ccRCC patients, respectively) (Table S3).