AR and polycystic ovary syndrome: Polycystic ovary syndrome (PCOS) is another common endocrine system disease, specifically manifested as cysts induced by endocrine disorders, irregular menstrual cycles, and even infertility.427 Studies have shown that high androgen levels and abnormal follicle formation in PCOS patients are significantly affected by two AS variants of the androgen receptor.428 Insulin-like growth factor-2 mRNA-binding protein 2 (IGF2BP2) can regulate a variety of variable splicing events in KGN cells.