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The problems with risk selection; scientific and psychosocial aspects
1Dana Farber Cancer Institute, 44 Binney Street, SM 203, Boston, MA 0211, USA. anne-renee_hartman@dfci.harvard.edu
Summary
Identifying high-risk individuals for breast cancer screening is challenging due to genetic testing limitations and incomplete risk models. Improved risk assessment is crucial for effective screening and prevention strategies.
Area of Science:
- Oncology
- Genetics
- Medical Imaging
Background:
- Genetically predisposed breast cancer accounts for 9,000-18,000 US cases annually.
- BRCA1/2 mutations cause over 60% of inherited breast cancer; other genes contribute to the remaining 40%.
- High false-negative rates in BRCA1/2 testing (10-15%) complicate identifying high-risk individuals.
Purpose of the Study:
- To address challenges in identifying and managing high-risk individuals for breast cancer.
- To evaluate the role of magnetic resonance imaging (MRI) in screening high-risk women.
- To explore the impact of risk-reducing strategies on screening and prevention.
Main Methods:
- Review of current genetic testing limitations for BRCA1/2 mutations.
- Analysis of breast cancer screening trials, particularly those using MRI.
- Discussion of risk assessment models incorporating genetic and environmental factors.
Main Results:
- Current genetic testing and risk models inadequately identify all high-risk individuals.
- MRI increases screening sensitivity and detects earlier stage cancers in mutation carriers.
- Exclusion of women with unidentified genetic risk or inadequately assessed risk from trials.
Conclusions:
- Accurate risk assessment for breast cancer remains a significant challenge.
- Enhanced screening tools like MRI are vital for high-risk populations.
- Future strategies should integrate comprehensive risk assessment to optimize screening and reduce reliance on prophylactic surgeries.