Although the exact role of Th17 cells is not understood in the pathogenesis of endometriosis, a lot of studies state that the macrophages and the ectopic endometrial cells secrete IL-27, which attracts the Th17 to the site of these lesions and causes them to secrete IL-10, which promotes the growth of the endometriosis [104]. Here, IL27 is linked to endometriosis.