AccScience Publishing / EJMO / Online First / DOI: 10.36922/EJMO025310326
ORIGINAL RESEARCH ARTICLE

Machine learning-enhanced immune signatures optimize cancer antigen 125 performance for epithelial ovarian carcinoma detection

Yuanhong Zhou1† Xuehui Chen1† Jia Liu1† Qianwen Zhang1† Youzheng Luo1 Qiang Liu1*
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1 The First College of Clinical Medical Science, Yichang Central People’s Hospital, China Three Gorges University, Yichang, Hubei, China
†These authors contributed equally to this work.
Received: 28 July 2025 | Revised: 31 October 2025 | Accepted: 14 November 2025 | Published online: 17 December 2025
© 2025 by the Author(s). This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution -Noncommercial 4.0 International License (CC-by the license) ( https://creativecommons.org/licenses/by-nc/4.0/ )
Abstract

Introduction: Ovarian cancer (OC) ranks as the fifth most common gynecologic malignancy among women worldwide.

Objective: The present study evaluates the diagnostic potential of hematological biomarkers for the early detection and differential diagnosis of OC.

Methods: A bioinformatic analysis was performed to compare immune cell profiles in blood and tissue samples from patients with OC using data from The Cancer Genome Atlas and Gene Expression Omnibus databases. Subsequently, a retrospective clinical study was conducted at Yichang Central People’s Hospital between January 2015 and January 2021, including three cohorts: (i) Patients with benign ovarian tumors (n = 70), (ii) Patients with OC (n = 70), and (iii) Healthy controls (n = 60). A comprehensive analysis of routine blood parameters and the tumor marker cancer antigen 125 (CA125) was performed.

Results: The findings revealed that peripheral blood immune markers exhibited superior diagnostic utility compared with tissue-based indicators. The combination of CA125 with erythrocyte sedimentation rate (ESR) and neutrophil-to-lymphocyte ratio showed high accuracy in differentiating benign ovarian tumors from OC (area under the curve [AUC]: 0.87). Furthermore, a panel combining CA125 and platelet-to-neutrophil ratio showed enhanced diagnostic performance in distinguishing early-stage from advanced epithelial OC (sensitivity: 81.3%; specificity: 96.6%). Notably, the triad of CA125, ESR, and white blood cell count demonstrated strong screening performance for detecting epithelial OC (AUC: 0.941; p<0.001).

Conclusion: These results suggest that integrating CA125 with routine hematological parameters significantly enhances the diagnostic accuracy and early detection of epithelial OC compared to CA125 alone, providing a practical and cost-effective screening strategy for clinical implementation.

Keywords
Epithelial ovarian cancer
Hematological parameters
Screening
Cancer antigen 125
Bioinformatics
Funding
The work was supported by the National Nature Science Foundation of China (award numbers: 81403163 and 81402404), the Science and Technology Research Project of Hubei Provincial Education Department (award number: D20201204), the Yi Chang Scientific and Technological Bureau (award number: A222017), the Hubei Provincial Natural Science Foundation (award numbers: 2022CFB037 and 2024AFB832), the Hubei Provincial Administration of Traditional Chinese Medicine (grant no.: ZY2023M039), Education Reform Project of Three Gorges University (grant no.: 202427) and the Higher Education Research Project of Three Gorges University (grant no.: GJ2434).
Conflict of interest
The authors declare that they have no competing interests.
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Eurasian Journal of Medicine and Oncology, Electronic ISSN: 2587-196X Print ISSN: 2587-2400, Published by AccScience Publishing