期刊
AMERICAN JOURNAL OF HUMAN GENETICS
卷 108, 期 4, 页码 535-548出版社
CELL PRESS
DOI: 10.1016/j.ajhg.2021.03.003
关键词
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资金
- Big Data to Knowledge (BD2K) from The National Institutes of Health [T32 LM012409]
- National Science Foundation [DGE 1752814]
- Stanford Clinical & Translational Science Award (NIH) [NCATS: UL1TR003142]
- NIH [GM102365, HG010615]
- Chan Zuckerberg Biohub
- [U19HD077627]
Genome sequencing enables precision medicine by tailoring treatment to individual genetic variations. Understanding the function and clinical impacts of rare genetic variants is crucial, particularly in genes of known importance. A genomic learning healthcare system is proposed to continuously collect and assess rare variants, with a focus on early-onset treatable diseases in newborns and actionable pharmacogenomics, utilizing emerging machine learning methods for prediction and considering ethical implications.
Genome sequencing is enabling precision medicine-tailoring treatment to the unique constellation of variants in an individual's genome. The impact of recurrent pathogenic variants is often understood, however there is a long tail of rare genetic variants that are uncharacterized. The problem of uncharacterized rare variation is especially acute when it occurs in genes of known clinical importance with functionally consequential variants and associated mechanisms. Variants of uncertain significance (VUSs) in these genes are discovered at a rate that outpaces current ability to classify them with databases of previous cases, experimental evaluation, and computational predictors. Clinicians are thus left without guidance about the significance of variants that may have actionable consequences. Computational prediction of the impact of rare genetic variation is increasingly becoming an important capability. In this paper, we review the technical and ethical challenges of interpreting the function of rare variants in two settings: inborn errors of metabolism in newborns and pharmacogenomics. We propose a framework for a genomic learning healthcare system with an initial focus on early-onset treatable disease in newborns and actionable pharmacogenomics. We argue that (1) a genomic learning healthcare system must allow for continuous collection and assessment of rare variants, (2) emerging machine learning methods will enable algorithms to predict the clinical impact of rare variants on protein function, and (3) ethical considerations must inform the construction and deployment of all rare-variation triage strategies, particularly with respect to health disparities arising from unbalanced ancestry representation.
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