Abstract
Objective
To explore risk factors and develop a prediction model for ovarian metastasis in endometrial cancer (EC), as well as providing provide a reference for clinical ovarian preservation.
Methods
We conducted a retrospective observational study enrolling 1496 EC patients having received complete staging surgery from Qilu Hospital of Shandong University from 2012 to 2018. These patients were randomly divided into two cohorts: training cohort (n = 1046) and validation cohort (n = 448). A nomogram prediction model was developed based on univariate, least absolute shrinkage and selection operator (Lasso), and multivariate logistic regression. Then, the nomogram model’s performance was evaluated in discrimination, calibration, and clinical utility three aspects.
Results
Parametrium invasion, lymph node metastasis, and oviduct metastasis were finally contained in the nomogram prediction model. The AUC of the model in the training cohort was 0.85 compared with 0.72 in the validation cohort. It also behaved well in calibration and had good clinical utility. With a threshold probability of 20% ~ 80%, the nomogram increased the net benefit by 0 ~ 13.6 per 100 patients than surgery for all patients upon validation.
Conclusions
We develop a nomogram with good performances for predicting ovarian metastasis in EC patients, which may help clinicians identify candidate patients appropriate for ovarian preservation in premenopausal EC patients.
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Data availability
We are pleased to share our data with any qualified researchers without undue reservation. Please contact the corresponding author if there is anything they need.
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LXD: project development, data collection, manuscript writing; WYH: data collection, manuscript writing; ZXL: data analysis, research design; LPS: manuscript revision. All authors contributed to manuscript revision, read, and approved the submitted version.
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This is an observational study. The Research Ethics Committee of Shandong University Qilu hospital has confirmed that no ethical approval is required.
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Liu, X., Wu, Y., Liu, P. et al. Developing a validated nomogram for predicting ovarian metastasis in endometrial cancer patients: a retrospective research. Arch Gynecol Obstet 305, 719–729 (2022). https://doi.org/10.1007/s00404-021-06214-4
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DOI: https://doi.org/10.1007/s00404-021-06214-4