The ReceptivaDXTM test a new screening and diagnostic test has been proposed (287) based on the findings that B-cell-lymphoma 6 (BCL6) overexpression in the secretory endometrium of these women contribute to the progesterone resistance (288) and could potentially serve as a surrogate inflammatory marker for a dysfunctional endometrium in endometriosis associated with infertility (289, 290). The gene discussed is BCL6; the disease is Infertility.