PLOD1 and polycystic ovary syndrome: Interestingly, in deCODE samples, the PCOS-susceptibility allele at rs11031006 is also robustly associated with lower circulating FSH concentrations (β=−0.089 s.d. per allele, P=9.2 × 10−10, n=15,586 women), higher luteinizing hormone (LH) concentrations (β=0.115 s.d. per allele, P=3.6 × 10−15, n=17,469 women) and higher LH/FSH ratio (β=0.272 s.d. per allele, P=5.94 × 10−68, n=14,310 women).