Co-Occurrence of Endometriosis with Systemic Lupus Erythematosus: Genetic Aspects.

Previous studies have shown that patients with a history of endometriosis have an increased susceptibility for developing a big number of comorbidities, including various autoimmune diseases. Endometriosis is a complex, inflammatory, estrogen-dependent, heterogeneous gynecological disorder with an incidence of up to 10% in women of reproductive age. It is characterized by the implantation and growth of endometrial tissue outside the uterus and is associated with dysmenorrhea, deep dyspareunia, pelvic pain and infertility. Systemic lupus erythematosus (SLE) is a chronic, heterogeneous autoimmune disorder of the connective tissue, characterized by impaired innate and adaptive immune responses and the production of pathogenic autoantibodies that drive inflammation and damage in multiple organs. Its etiology is elusive yet associated with high heritability. Importantly, it has been found that endometriosis and SLE share some underlying molecular and cellular pathways. In the present study, we sought to delineate the co-occurrence of endometriosis with SLE from the biological and genetic viewpoint, aiming to identify the putative shared genetic components and clarify the underlying pathogenetic mechanisms. This information may contribute further to the design of new therapeutic protocols for both disorders under study.