PLOD1 and polycystic ovary syndrome: Particularly in PCOS patients, chronically high LH levels create a hyperandrogenic microenvironment that dysregulates steroidogenesis, further compromising granulosa cell capacity to produce INHB during late COH (31).The univariate analysis indicated a positive correlation between INHB levels on dGn5 and E2 levels on the trigger day, as well as the number of retrieved oocytes, while revealing a negative correlation with the TQE rate.