VHL and renal cell adenocarcinoma: No gene-gene interactions, as tested with the Wald χ2-test, were found between the three selected VHL SNPs and HIF1A_rs2301111 for both RCC (p = 0.310, p = 0.321 and p = 0.514 for VHL_rs1642739, VHL_rs779805 and VHL_rs265318, respectively) and ccRCC (p = 0.762, p = 0.442 and p = 0.978 for VHL_rs1642739, VHL_rs779805 and VHL_rs265318, respectively).