GSTP1 and renal cell carcinoma: Jia et al. [43] performed a meta-analysis on 10 studies of GSTM1, 10 reports of GSTT1, five studies of dual GSTM1-GSTT1-null genotype, six studies of GSTP1, and concluded that GSTM1, GSTT1, and GSTP1 gene polymorphisms were not to be associated with the risk of RCC.