A study by Mihalyi et al. found a panel consisting of luteal plasma levels of IL-8, TNF-α, and CA-125 that was able to distinguish between 201 women with endometriosis and 93 controls with a normal pelvis with a sensitivity of 89.7% and a specificity of 71.1% [36]. This evidence concerns the gene CXCL8 and endometriosis.