MALAT1 and polycystic ovary syndrome: To summarise, we have investigated that the MALAT1 expression in GCs of PCOS patients was notably increased, and the increase was much more significant in the NHA-PCOS, IR-PCOS and obe-PCOS subgroups, indicating that the MALAT1-mediated action might take vital roles for the steroid metabolism, IR and metabolism of PCOS in GCs.