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Predictive value of machine learning for breast cancer recurrence: a systematic review and meta-analysis

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Abstract

Purpose

Recurrence of breast cancer leads to a high lifetime risk and a low 5 year survival rate. Researchers have used machine learning to predict the risk of recurrence in patients with breast cancer, but the predictive performance of machine learning remains controversial. Hence, this study aimed to explore the accuracy of machine learning in predicting breast cancer recurrence risk and aggregate predictive variables to provide guidance for the development of subsequent risk scoring systems.

Methods

We searched Pubmed, EMBASE, Cochrane, and Web of Science. The risk of bias in the included studies was evaluated using prediction model risk of bias assessment tool (PROBAST). Meta-regression was adopted to explore whether there was a significant difference in the recurrence time by machine learning.

Results

Thirty-four studies involving 67,560 subjects were included, among whom 8695 experienced breast cancer recurrence. The c-index of prediction models was 0.814 (95%CI 0.802–0.826) and 0.770 (95%CI 0.737–0.803) in the training and validation sets, respectively; the sensitivity and specificity were 0.69 (95% CI 0.64–0.74), 0.89 (95% CI 0.86–0.92) in the training, and 0.64 (95% CI 0.58–0.70), 0.88 (95% CI 0.82–0.92) in the validation, respectively. Age, histological grading, and lymph node status are the most commonly used variables in model construction. Attention should be paid to unhealthy lifestyles such as drinking, smoking and BMI as modeling variables. Risk prediction models based on machine learning have long-term monitoring value for breast cancer population, and subsequent studies should consider using large-sample and multi-center data to establish risk equations for verification.

Conclusion

Machine learning may be used as a predictive tool for breast cancer recurrence. Currently, there is a lack of effective and universally applicable machine learning models in clinical practice. We expect to incorporate multi-center studies in the future and attempt to develop tools for predicting breast cancer recurrence risk, so as to effectively identify populations at high risk of recurrence and develop personalized follow-up strategies and prognostic interventions to reduce the risk of recurrence.

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Data availability

The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.

Abbreviations

TRIPOD:

Transparent reporting of a multivariable prediction model for individual prognosis or diagnosis

AUROC:

Area under the receiver operating characteristic curve

GLCM:

Gray-level co-occurrence matrix

GLRLM:

Gray-level run-length matrix

WPB:

Wisconsin prognostic breast cancer

FNA:

Fine needle aspiration biopsy digitized samples

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Funding

There was no project specific funding for this work.

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Authors and Affiliations

Authors

Contributions

DL and XL contributed equally to this work. Conceptualization: SS and XL; methodology, formal analysis and investigation: DL and XL; writing—original draft preparation: DL and XL; writing—review and editing: DL, XL, WF and BL; resources: WF, BL and XZ; supervision: SS and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Shaoqin Sun.

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Lu, D., Long, X., Fu, W. et al. Predictive value of machine learning for breast cancer recurrence: a systematic review and meta-analysis. J Cancer Res Clin Oncol 149, 10659–10674 (2023). https://doi.org/10.1007/s00432-023-04967-w

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  • DOI: https://doi.org/10.1007/s00432-023-04967-w

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