CYP19A1 and polycystic ovary syndrome: Between the reported genes in this article, the genes that have shown their effects on gonadotropin secretion and actions in PCOS women are GnRHR, FSHβ, FSHR, and LHCGR. Also, between the reported genes, the genes that have effects on steroid hormones biosynthesis and functions in PCOS women include CYP19A1, HSD17B, AR and SHBG.