期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 107, 期 23, 页码 10602-10607出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1000219107
关键词
epistasis; ciliopathy; zebrafish; in vivo assays
资金
- National Institute of Child Health and Human Development [R01HD04260]
- National Institute of Diabetes and Digestive and Kidney Diseases [R01DK072301, R01DK075972, R01DK52431]
- Macular Vision Research Foundation
- Visual Neuroscience Training Program
- Russell Berrie Foundation
Technological advances hold the promise of rapidly catalyzing the discovery of pathogenic variants for genetic disease. However, this possibility is tempered by limitations in interpreting the functional consequences of genetic variation at candidate loci. Here, we present a systematic approach, grounded on physiologically relevant assays, to evaluate the mutational content (125 alleles) of the 14 genes associated with Bardet-Biedl syndrome (BBS). A combination of in vivo assays with subsequent in vitro validation suggests that a significant fraction of BBS-associated mutations have a dominant-negative mode of action. Moreover, we find that a subset of common alleles, previously considered to be benign, are, in fact, detrimental to protein function and can interact with strong rare alleles to modulate disease presentation. These data represent a comprehensive evaluation of genetic load in a multilocus disease. Importantly, superimposition of these results to human genetics data suggests a previously underappreciated complexity in disease architecture that might be shared among diverse clinical phenotypes.
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