Abstract:Objective To explore the predictive value of serum angiopoietin-like protein-2 (Angptl-2), angiopoietin-like protein-4 (Angptl-4) and anti-Mullerian hormone (AMH) levels on infertility in patients with endometriosis (EMT).Methods The clinical data of 206 patients with EMT admitted to Guangzhou Red Cross Hospital from May 2022 to May 2025 were analyzed retrospectively, and all patients received serological examination after admission. EMT patients were divided into infertility group (n = 74) and fertile group (n = 132) according to whether they were complicated with infertility. The clinical data, serum levels of Angptls and AMH were compared between the two groups. Logistic regression analysis was used to screen the independent risk factors of infertility in EMT patients, and the receiver operating characteristic (ROC) curve of subjects was drawn to evaluate the predictive value of each index and joint detection for infertility in EMT patients.Results The proportion of patients with r-AFS stage III or IV, and the levels of serum Angptl-2 and Angptl-4 were higher in the infertility group than in the fertile group, while the AMH level was lower (P 0.05). The results of the Logistic multivariate analysis showed that r-AFS stage Ⅲ, Ⅳ [O^R = 3.054 (95% CI: 1.051, 8.870) ], high Angptl-2 levels [O^R = 2.067 (95% CI: 1.565, 2.730) ], high Angptl-4 levels [O^R = 1.234 (95% CI: 1.112, 1.369) ], and low AMH levels [O^R = 0.632 (95% CI: 0.496, 0.806) ] were all risk factors for infertility in EMT patients (P 0.05). The AUCs for Angptl-2, Angptl-4, AMH alone and their combination were 0.806 (95% CI: 0.745, 0.858), 0.793 (95% CI: 0.731, 0.846), 0.791 (95% CI: 0.729, 0.845), and 0.885 (95% CI: 0.834, 0.925), respectively; the sensitivities were 72.97% (95% CI: 0.612, 0.823), 70.27% (95% CI: 0.584, 0.801), 71.62% (95% CI: 0.598, 0.812), and 74.32% (95% CI: 0.626, 0.835), respectively; the specificities were 72.73% (95% CI: 0.642, 0.799), 74.24% (95% CI: 0.658, 0.813), 73.48% (95% CI: 0.650, 0.806), and 87.88% (95% CI: 0.808, 0.927), respectively.Conclusion The combined detection of serum Angptl-2, Angptl-4 and AMH has a high predictive efficiency for infertility in EMT patients, which can provide reference for early clinical identification of patients with high risk of infertility.