Highlights First study to investigate the rs10835638 variant in Brazilian women with endometriosis. The homozygous TT genotype was very rare among Brazilian women. G۪۪enotype frequencies did not differ between endometriosis and Control Groups. The T allele was more common in minimal/mild endometriosis subgroups than in the Control Group. ABSTRACT Objective: The follicle-stimulating hormone subunit beta gene rs10835638 variant (c.-211G>T) may have detrimental effects on fertility and protective effects against endometriosis. A casecontrol analysis was performed, aiming to investigate the possible […]