PPARG and endometriosis: The endometriosis risk allele A of rs2921188 (OR= 1.13, 95% CI: 1.05–1.21), P = 5.9× 10−4) in PPARG (peroxisomeproliferator-activated receptor gamma) is associated with increased WHRadjBMI(β = 0.017; P = 1.1× 10−3).