OBJECTIVE: To determine the frequency of the estrogen receptor b gene (ER?) +1730 G/A polymorphism in infertile women with and without endometriosis and controls. SUBJECTS AND METHODS: Case-control study that included 136 women with endometriosis, 69 women without endometriosis and 209 fertile women as controls. The ER? gene + 1730 G/A polymorphism was identified by RFLP-PCR (Restriction Fragment Length Polymorphism – Polymerase Chain Reaction). RESULTS: Genotypes GG, GA and AA of the ER? gene presented frequencies of 60.3%, 38.2% and […]