BRD2 and polycystic ovary syndrome: There was no significant difference in the value of laboratory parameters, testosterone, LH, FSH, estradiol, prolactin, CRP, Ca-125, vitamin D concentrations, nor clinical parameters, age, body mass index (BMI), number of pregnancies, ovarian morphology, hypovitaminosis D, hyperandrogenism and mFerriman–Gallwey scale score, between subpopulations of women with PCOS with SCH, including ATA status and without thyroid dysfunction.