FSHR and endometriosis: Evidence demonstrates reduced ovarian reserve function in endometriosis (7, 8): i) elevated serum concentrations of FSH and low concentrations of LH relative to FSH levels are observed in endometriosis, while lower FSH levels are potential indexes for successful postoperative pregnancy; and ii) single nucleotide polymorphisms (SNPs) in the FSH receptor (FSHR) gene and LH receptor (LHR) gene might be associated with ovulation disorders.