Pooled analysis of the combined effects of GSTT1, GSTM1, and GSTP1 genotypes and RCC risk^&.

Abbreviations: R, Random-effects model; F, Fixed-effects model; Ph, test for heterogeneity. & GSTM1 (−): the null genotype; GSTT1 (−): the null genotype; GSTP1 (−): AG or GG; European*: two studies [23], [32] were omitted because of low quality.