Tumor necrosis factor antagonists and their use in endometriosis

Tumor necrosis factor antagonists are administered in therapeutically effective doses to treat and/or prevent endometriosis. The antagonists of this invention typically are selected among various classes of molecules but preferably are soluble TNF receptors. The antagonists are useful for the regression of endometriotic lesions and, if combined with other active ingredients, for amelioration of related disorders, like infertility.