The plasma glycoprotein von Willebrand factor (VWF) exhibits fivefold antigen level variation across the normal human population determined by both genetic and environmental factors. Low levels of VWF are associated with bleeding and elevated levels with increased risk for thrombosis, myocardial infarction, and stroke. To identify additional genetic determinants of VWF antigen levels and to minimize the impact of age and illness-related environmental factors, we performed genome-wide association analysis in two young and healthy cohorts (n = 1,152 and n = 2,310) and identified signals at ABO (P < 7.9E-139) and VWF (P < 5.5E-16), consistent with previous reports. Additionally, linkage analysis based on sibling structure within the cohorts, identified significant signals at chromosome 2q12–2p13 (LOD score 5.3) and at the ABO locus on chromosome 9q34 (LOD score 2.9) that explained 19.2% and 24.5% of the variance in VWF levels, respectively. Given its strong effect, the linkage region on chromosome 2 could harbor a potentially important determinant of bleeding and thrombosis risk. The absence of a chromosome 2 association signal in this or previous association studies suggests a causative gene harboring many genetic variants that are individually rare, but in aggregate common. These results raise the possibility that similar loci could explain a significant portion of the “missing heritability” for other complex genetic traits.
Linkage analysis identifies a locus for plasma von Willebrand factor undetected by genome-wide association
K. Desch,A. B. Ozel,D. Siemieniak,Yossi Kalish,J. Shavit,C. Thornburg,A. Sharathkumar,Caitlin P. McHugh,C. Laurie,A. Crenshaw,D. Mirel,Yoonhee Kim,C. Cropp,A. Molloy,P. Kirke,J. Bailey-Wilson,Alexander F. Wilson,J. Mills,J. Scott,L. Brody,Jun Z. Li,D. Ginsburg
Published 2012 in Proceedings of the National Academy of Sciences of the United States of America
ABSTRACT
PUBLICATION RECORD
- Publication year
2012
- Venue
Proceedings of the National Academy of Sciences of the United States of America
- Publication date
2012-12-24
- Fields of study
Biology, Medicine
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
CITATION MAP
EXTRACTION MAP
CLAIMS
- Linkage analysis identified a significant signal at chromosome 2q12-2p13 and a second signal at the ABO locus, explaining 19.2% and 24.5% of the variance in plasma von Willebrand factor levels, respectively.박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewB (s683577b42) reviewKiller Whale (322360f1c1) review
CONCEPTS
- abo locus
The genomic region containing ABO, the blood-group gene on chromosome 9q34.
Aliases: ABO
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewB (s683577b42) reviewKiller Whale (322360f1c1) review - association studies
Genetic studies that test statistical association between variants and a trait across the genome or at specific loci.
Aliases: association study, association analyses
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewB (s683577b42) reviewKiller Whale (322360f1c1) review - bleeding and thrombosis risk
The clinical risk of abnormal bleeding or blood clot formation associated with altered hemostasis.
Aliases: bleeding risk, thrombosis risk
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewB (s683577b42) reviewKiller Whale (322360f1c1) review - chromosome 2q12-2p13
A chromosomal region on human chromosome 2 highlighted by linkage evidence in this study.
Aliases: 2q12-2p13, chromosome 2 linkage region
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewB (s683577b42) reviewKiller Whale (322360f1c1) review - genome-wide association analysis
A genome-wide scan that tests common genetic variants for association with a measured trait.
Aliases: GWAS
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewB (s683577b42) reviewKiller Whale (322360f1c1) review - linkage analysis
A family-based genetic mapping approach that searches for chromosomal regions shared with a trait within relatives.
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewB (s683577b42) reviewKiller Whale (322360f1c1) review - plasma von willebrand factor antigen levels
The circulating amount of von Willebrand factor antigen measured in plasma as a quantitative trait.
Aliases: VWF antigen levels, VWF levels
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewB (s683577b42) reviewKiller Whale (322360f1c1) review - rare variants
Genetic variants that occur at low frequency in the population, often individually hard to detect in association testing.
Aliases: individually rare variants
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewB (s683577b42) reviewKiller Whale (322360f1c1) review - vwf locus
The genomic region containing the VWF gene, which encodes von Willebrand factor.
Aliases: VWF
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewB (s683577b42) reviewKiller Whale (322360f1c1) review
REFERENCES
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