Clinical, therapeutic and prognostic differences between male and female patients with breast cancer—a comparison of 2510 men and 307,634 women in a registry-based study in Germany

URN to cite this document:

urn:nbn:de:bvb:355-epub-768426 Copy

DOI to cite this document:

10.5283/epub.76842 Copy

Graf, Marion ; Gerken, Michael ; Klinkhammer-Schalke, Monika ; Schrodi, Simone ; Pauer, Armin ; Geiss, Karla ; Ortmann, Olaf ; Sturm-Inwald, Elisabeth C.

License: Creative Commons Attribution 4.0 PDF - Published Version (872kB)

Date of publication of this fulltext: 12 Jun 2025 04:35

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Details

Item type:	Article
Open Access Type:	DEAL (Springer Gold)
Journal or Publication Title:	Journal of Cancer Research and Clinical Oncology
Publisher:	Springer
Volume:	151
Number of Issue or Book Chapter:	6
Date:	3 June 2025
Institutions:	Medicine > Lehrstuhl für Frauenheilkunde und Geburtshilfe (Schwerpunkt Frauenheilkunde) Medicine > Zentren des Universitätsklinikums Regensburg > Tumorzentrum e.V. Medicine > Institut für Epidemiologie und Präventivmedizin > Tumorzentrum e.V.
Identification Number:	Value Type 10.1007/s00432-025-06220-y DOI
Keywords:	Male breast cancer · Therapy · Prognosis · Prognostic factors · Overall survival · Cancer registry
Dewey Decimal Classification:	600 Technology > 610 Medical sciences Medicine
Status:	Published
Refereed:	Yes, this version has been refereed
Created at the University of Regensburg:	Partially
Item ID:	76842

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Abstract

Purpose The aim of the present study was to compare patient, tumor characteristics and prognostic factors as well as diagnostics and therapies between men and women with breast cancer. The rates of primary distant metastases, contralateral second tumors, overall survival (OS), recurrence, and recurrence-free survival (RFS) were analyzed and compared between men and women. Methods This ...

Abstract

Purpose
The aim of the present study was to compare patient, tumor characteristics and prognostic factors as well as diagnostics and therapies between men and women with breast cancer. The rates of primary distant metastases, contralateral second tumors, overall survival (OS), recurrence, and recurrence-free survival (RFS) were analyzed and compared between men and women.
Methods
This retrospective cohort study included patient data from 18 clinical cancer registries in Germany (2000–2018). Differences in risk factors and short-term endpoints were analyzed via univariable and multivariable binary logistic regression analyses. OS, RFS, and the rate of subsequent second tumors were examined via Kaplan‒Meier, univariable and multivariable Cox regression methods.
Results
Compared with women, male patients with breast cancer presented a significantly greater risk of unfavorable prognostic factors, such as advanced stage, lymphatic invasion, and more primary distant metastases. While sentinel lymph node biopsy and HER-2 testing were comparable, treatment rates for men were 9.5–29.0% lower than those for women. In multivariable analyses, men had a 1.32-fold increased risk of death (95% CI 1.24–1.41; p < 0.001). The risk of recurrence/mortality was significantly increased by a factor of 1.531 (95% CI 1.43–1.65; p < 0.001). Adjustment for therapy in a multivariable regression model did not significantly affect the risk of death. Nevertheless, men had a survival benefit from systemic therapies comparable to that of women.
Conclusion
Neither patient and tumor characteristics nor differences in therapy could completely explain the difference in mortality between men and women. Differences in lifestyle or biological factors could play a role.

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Metadata last modified: 15 Oct 2025 14:08

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