The mRNA of ZFP36 (encoding TTP), ZFP36L1 (encoding Tis11b), ZFP36L2 (encoding Tis11d) and ELAVL1 (encoding HuR) were expressed in matched ectopic lesion and eutopic endometrium from endometriosis patients, as well as in endometrial samples from menstrual stage matched fertile subjects with no evidence of endometriosis. The gene discussed is ELAVL1; the disease is endometriosis.