Thus, according to the present findings, future studies with appropriate casuistry, which investigate theCMKLR1mutation in DNA samples (and not in transcripts) and evaluate the respective protein (chemerin) in the eutopic endometria of infertile women with endometriosis may clarify this issue and contribute to the understanding of endometriosis-related infertility. The gene discussed is RARRES2; the disease is endometriosis.