showed significant elevation of IL-6, TNF-α, and glycodelin A levels in peritoneal fluid of endometriosis patients, with TNF-α demonstrating greatest diagnostic value (sensitivity 81.8%, specificity 76.5%), although no statistically significant correlation between cytokine levels and disease stage was found, consistent with previously published review by Harada et al. The gene discussed is IL6; the disease is endometriosis.