Evidence mapPaperPMID 41969482Full record

ArticleTranslational cancer research2026

Analysis of prognostic factors in ovarian clear cell carcinoma: a retrospective cohort study.

Xingyun Xie, Yuting Wei, Chenying Liu, Siyi Li, Wenjuan Chen

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Article in Translational cancer research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 authors.

Xingyun Xie *Department of Gynecology, Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital, Fuzhou, China.
Yuting Wei *Fudan University Shanghai Cancer Center (Xiamen), Xiamen, China.
Chenying LiuDepartment of Gynecology, Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital, Fuzhou, China.
Siyi LiDepartment of Gynecology, Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital, Fuzhou, China.
Wenjuan ChenDepartment of Gynecology, Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital, Fuzhou, China.

Funding

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6 · The paper itself

Abstract

Background: Ovarian clear cell carcinoma (OCCC) is a rare histological subtype of ovarian cancer, often associated with endometrial lesions, and characterized by poor prognosis and a high propensity for recurrence and metastasis. This study aimed to investigate the clinical characteristics of patients with OCCC and identify prognostic factors. Methods: A retrospective analysis was conducted on patients diagnosed with OCCC at Fujian Cancer Hospital from January 2007 to December 2018. Inclusion criteria were as follows: (I) histologically confirmed pure OCCC; (II) surgical intervention; (III) standardized and completed postoperative follow-up. Exclusion criteria were as follows: (I) patients with recurrence or metastasis; (II) patients who did not receive treatment. Kaplan-Meier survival curves were used to estimate progression-free survival (PFS) and overall survival (OS). Clinical outcomes were further analyzed using Cox proportional hazards regression. Results: The median follow-up duration for 102 patients was 89.62 months. At the time of the final follow-up, 44 patients had died, and 43 had experienced recurrence or metastasis. The 5-year OS and PFS rates were 59.2% and 50.0%, respectively. Univariate Cox regression analysis indicated that stage, concurrent endometriosis, chemotherapy, carbohydrate antigen 125 (CA-125) normalization, and CA-125 ≤20 U/mL were associated with both OS and PFS (P<0.05). Lymph node metastasis, platinum resistance, and venous thrombosis were only associated with OS (P<0.05). Multivariate analysis revealed that stage [hazard ratio (HR) =2.780, 95% confidence interval (CI): 1.265-6.110, P=0.01], chemotherapy (HR =0.211, 95% CI: 0.075-0.593, P=0.003), and platinum resistance (HR =8.233, 95% CI: 3.617-18.743, P<0.001) were independent prognostic factors for OS. Concurrent endometriosis (HR =0.385, 95% CI: 0.189-0.784, P=0.009) and stage (HR =4.507, 95% CI: 2.346-8.660, P<0.001) were independent prognostic factors for PFS. Conclusions: Stage, endometriosis, platinum resistance, and platinum-based chemotherapy are significant prognostic factors in OCCC. CA-125 levels, positive lymph nodes, and venous thrombosis are also associated with survival outcomes.

Indexed as

clear cell carcinomaclinical featuresOvarian cancer (OC)prognosisrisk factors

Identifiers

PMID41969482
PMCPMC13067044

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