Objective: Endometriosis (EMs) is a common gynecologic disease, developing mostly in women of reproductive age. It is one of the most familiar reasons of infertility and chronic pelvic pain. The etiology and pathogenesis of endometriosis are still unclear. There is increasing evidence that endometriosis is inherited as a complex genetic trait and associated with polymorphisms in candidate genes, implying that multiple gene loci interact with each other and with the environment to produce the disease phenoty...