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The Canadian Breast Cancer Symposium 2025: Meeting Report
Christine Brezden-Masley1, Katarzyna J Jerzak2, Nancy A Nixon3
1Marvelle Koffler Breast Centre, Mount Sinai Hospital, University of Toronto, Toronto, ON M5G 1X5, Canada.
Abstract:
The 2025 Canadian Breast Cancer Symposium (CBCS) brought together patients, clinicians and researchers from across Canada to discuss advances shaping personalized breast cancer care. Key updates in systemic therapy highlighted expanding treatment options, including CDK4/6 inhibitors, oral SERDs, PI3K/AKT-targeted therapies, and antibody-drug conjugates across early and metastatic settings. Radiation oncology sessions emphasized treatment de-escalation, featuring evidence for ultra-hypofractionation, selective omission of nodal irradiation, and stereotactic strategies to manage oligoprogression. Surgical presentations focused on reducing morbidity through tailored axillary management and emerging techniques to prevent lymphedema. Advances in the management of central nervous system metastases underscored the growing synergy between stereotactic radiotherapy and CNS-active systemic therapies. Informed by patient testimony and advocacy perspectives, experts reflected on persistent gaps in diagnosis, access, and survivorship that shape priorities for future improvements. Together, these insights outline key directions that help to refine clinical practice and guide future research.
Insights
The 2025 Canadian Breast Cancer Symposium highlighted advances in personalized breast cancer care, including new systemic therapies, radiation oncology de-escalation, and surgical techniques. Experts also addressed persistent gaps in diagnosis, access, and survivorship.
Area of Science:
- Oncology
- Medical Research
Background:
- The Canadian Breast Cancer Symposium (CBCS) convenes experts to discuss breast cancer care advancements.
- Personalized medicine is increasingly central to breast cancer treatment strategies.
Purpose of the Study:
- To summarize key updates and discussions from the 2025 CBCS.
- To identify emerging trends and persistent challenges in breast cancer management.
Main Methods:
- The symposium featured presentations and discussions from patients, clinicians, and researchers.
- Key areas covered included systemic therapy, radiation oncology, surgical oncology, and CNS metastases.
Main Results:
- Significant progress was noted in systemic therapies, including CDK4/6 inhibitors, oral SERDs, PI3K/AKT-targeted agents, and antibody-drug conjugates.
- Radiation oncology is moving towards de-escalation with ultra-hypofractionation and stereotactic approaches.
- Surgical oncology focuses on reducing morbidity and lymphedema, while CNS metastasis management benefits from combined radiotherapy and systemic therapy.
Conclusions:
- The 2025 CBCS showcased advancements in personalized breast cancer care, refining clinical practice.
- Addressing gaps in diagnosis, access, and survivorship remains crucial for future research and improved patient outcomes.
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