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Familial Risk Stratification Across Cancer Syndromes Using Fam3PRO
Jane W Liang1, Gregory E Idos2, Christine Hong2
1Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Department of Data Science, Dana-Farber Cancer Institute, Boston, MA, USA; Division of Research, Kaiser Permanente Northern California, Pleasanton, CA, USA.
Summary
Fam3PRO is a new tool that accurately predicts inherited cancer risk across many genes and cancers, improving genetic testing efficiency. It identifies more high-risk individuals compared to existing methods.
Area of Science:
- Genetics and Genomics
- Cancer Research
- Computational Biology
Background:
- Assessing inherited cancer susceptibility is crucial for early detection and genetic testing.
- Current methods often focus on single gene-cancer syndromes, limiting comprehensive risk assessment.
- There's a growing need for tools that integrate multiple gene-cancer associations.
Purpose of the Study:
- To validate Fam3PRO, a novel Mendelian risk prediction platform.
- To assess Fam3PRO's efficiency in identifying individuals at risk for inherited cancer susceptibility.
- To compare Fam3PRO's performance against established syndrome-specific models.
Main Methods:
- Fam3PRO was developed as a computationally efficient platform for Mendelian risk prediction.
- The platform supports models with an arbitrary number of genes and cancers.
- Fam3PRO was trained on population parameters for 21 genes and 17 cancers and validated on three independent cohorts.
Main Results:
- Fam3PRO demonstrated discrimination and calibration comparable to BRCAPRO and MMRpro for breast-ovarian and Lynch syndromes.
- For 21 genes, Fam3PRO showed a discrimination of 0.64 and calibration of 1.13 in a combined cohort.
- Fam3PRO identified more individuals at high risk for pathogenic variants than BRCAPRO and MMRpro at 2.5% and 5% thresholds.
Conclusions:
- Fam3PRO offers a validated, efficient approach for familial cancer risk stratification.
- The platform provides accurate carrier probabilities and future cancer risk estimates.
- Fam3PRO enhances the identification of individuals requiring genetic testing and early detection strategies.
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