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Association of metabolic syndrome conditions with risk of second primary uterine cancer in breast cancer survivors

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Abstract

Purpose

Uterine cancer risk is high in breast cancer survivors. Although breast cancer and uterine cancer share some common epidemiological risk factors, association of metabolic syndrome with incident uterine cancer in breast cancer survivors is under-studied. We evaluated the association of metabolic syndrome conditions with second primary uterine cancer in breast cancer survivors.

Methods

In this retrospective cohort study, 37,303 breast cancer patients diagnosed between 2008 and 2020 at Kaiser Permanente Southern California, an integrated healthcare system, were included. Data on cancer-related variables, sociodemographic, and clinical variables were extracted from KPSC’s Surveillance, Epidemiology, and End Results (SEER)-affiliated cancer registry and electronic health records, as appropriate. Patients were followed from breast cancer diagnosis until 12/31/2021 for incident uterine cancer. Proportional hazards regression was used to report association [HR (95% CI)] between metabolic conditions and uterine cancer.

Results

More than half (53.1%) of the breast cancer survivors had 1–2 metabolic conditions; 19.4% had 3 + , while 27. 5% had no metabolic conditions. Median time to follow-up was 5.33 years and 185 (0.5%) patients developed second primary uterine cancer. Obesity was associated with an elevated uterine cancer risk in the adjusted model [HR (95% CI) 1.64 (1.20–2.25)]. Having 1–2 metabolic conditions (versus none) was not associated with increased uterine cancer risk [adjusted HR (95% CI) 1.24 (0.85–1.82)]; however, there was an increased uterine cancer risk with 3 + metabolic conditions [adjusted HR (95% CI) 1.82 (1.16–2.87)].

Conclusion

Although not statistically significant, we found a trend demonstrating greater uterine cancer risk by increasing numbers of metabolic syndrome conditions in breast cancer survivors.

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Data availability

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

References

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Acknowledgements

The authors thank all patients included in the study.

Funding

This study was supported by National Institutes of Health (NIH)/National Heart, Lung, and Blood Institute (NHLBI) grant number R01HL154319 (Drs. Haque and Potosky).

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Authors and Affiliations

Authors

Contributions

Amrita Mukherjee, Lie Hong Chen, and Reina Haque contributed to the study conception and design. Material preparation and data collection were performed by Lie Hong Chen and Zheng Gu. Formal analysis was done by Amrita Mukherjee. The first draft of the manuscript was written by Amrita Mukherjee. All the authors revised the first draft and approved the final manuscript.

Corresponding author

Correspondence to Amrita Mukherjee.

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Conflict of interests

This study was supported by NIH/NHLBI grant number R01HL154319 (Drs. Haque and Potosky). The contents do not represent the view of the NIH/NHLBI. The authors declare no other financial interests/personal relationships which may be considered as potential competing interests.

Ethics approval

The study was approved by the KPSC Institutional Review Board (IRB).

Consent to participate

Due to use of data collected as part of routine care, requirement of verbal or written informed consent was waived by the IRB.

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Not applicable.

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Mukherjee, A., Gu, Z., Chen, L.H. et al. Association of metabolic syndrome conditions with risk of second primary uterine cancer in breast cancer survivors. J Cancer Res Clin Oncol 149, 17749–17755 (2023). https://doi.org/10.1007/s00432-023-05489-1

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  • DOI: https://doi.org/10.1007/s00432-023-05489-1

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