PPARG and gastric cancer: In addition, PPARγ rs1801282 C > G SNV conferred decreased risk for GC patients among subgroups of age ≥ 61 years, no smoking and no alcohol consuming; PPARγ rs3856806 C > T SNV conferred risk for GC patients in females; PPARGC1A rs8192678 TT genotype conferred decreased risk for GC patients in male; PPARGC1A rs2970847 C > T conferred decreased risk for GC patients in a subgroup of BMI ≥ 24 kg/m2; both PPARGC1B rs7732671 G > C and PPARGC1B rs17572019 G > A conferred risk for GC patients in a subgroup of BMI ≥ 24 kg/m2.