Journal
SCIENCE
Volume 305, Issue 5685, Pages 869-872Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1099870
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Funding
- NHLBI NIH HHS [UO1-HL66880, HL53917] Funding Source: Medline
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Heritable variation in complex traits is generally considered to be conferred by common DNA sequence polymorphisms. We tested whether rare DNA sequence variants collectively contribute to variation in plasma levels of high-density lipoprotein cholesterol (HDL-C). We sequenced three candidate genes (ABCA1, APOA1, and LCAT) that cause Mendelian forms of low HDL-C levels in individuals from a population-based study. Nonsynonymous sequence variants were significantly more common (16% versus 2%) in individuals with low HDL-C (95th percentile). Similar findings were obtained in an independent population, and biochemical studies indicated that most sequence variants in the low HDL-C group were functionally important. Thus, rare alleles with major phenotypic effects contribute significantly to low plasma HDL-C levels in the general population.
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