期刊
ANNUAL REVIEW OF MEDICINE, VOL 62, 2011
卷 62, 期 -, 页码 11-24出版社
ANNUAL REVIEWS
DOI: 10.1146/annurev.med.091708.162036
关键词
human genetics; common disease; quantitative traits; personalized medicine; biological pathways; common variants
Most common diseases and quantitative traits are heritable: determined in part by genetic variation within the population. The inheritance is typically polygenic in that combined effects of variants in numerous genes, plus nongenetic factors, determine outcome. The genes influencing common disease and quantitative traits remained largely unknown until the implementation in 2006 of genome-wide association (GWA) studies that comprehensively surveyed common genetic variation (frequency > 5%). By 2010, GWA studies identified > 1,000 genetic variants for polygenic traits. Typically, these variants together account for a modest fraction (10%-30%) of heritability, but they have highlighted genes in both known and new biological pathways and genes of unknown function. This initial effort prefigures new studies aimed at rarer variation and decades of functional work to decipher newly glimpsed biology. The greatest impact of GWA studies may not be in predictive medicine but rather in the development over the next decades of therapies based on novel biological insights.
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