We collected the following parameters: age, body mass index (BMI), the Ferriman–Gallwey score (FG), maximum duration of oligomenorrhea, abdominal circumference (AC), free testosterone value (FT), luteinizing hormone/follicle stimulating hormone (LH/FSH) ratio value, serum cortisol value and ovarian ultrasound appearance. This evidence concerns the gene PLOD1 and Oligomenorrhea.