Following multivariable analysis adjustment using backward LR regression, only three variables remained independent predictors of PCOS: LH/FSH ratio (aOR: 7.810, 95% CI: 1.436–42.476, p = 0.017), CLU (aOR: 1.853, 95% CI: 1.252–2.743, p = 0.002), and AMH (aOR: 1.564, 95% CI: 1.202–2.036, p < 0.001). The gene discussed is PLOD1; the disease is polycystic ovary syndrome.