Title |
Association between a common immunoglobulin heavy chain allele and rheumatic heart disease risk in Oceania
|
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Published in |
Nature Communications, May 2017
|
DOI | 10.1038/ncomms14946 |
Pubmed ID | |
Authors |
Tom Parks, Mariana M. Mirabel, Joseph Kado, Kathryn Auckland, Jaroslaw Nowak, Anna Rautanen, Alexander J. Mentzer, Eloi Marijon, Xavier Jouven, Mai Ling Perman, Tuliana Cua, John K. Kauwe, John B. Allen, Henry Taylor, Kathryn J. Robson, Charlotte M. Deane, Andrew C. Steer, Adrian V. S. Hill |
Abstract |
The indigenous populations of the South Pacific experience a high burden of rheumatic heart disease (RHD). Here we report a genome-wide association study (GWAS) of RHD susceptibility in 2,852 individuals recruited in eight Oceanian countries. Stratifying by ancestry, we analysed genotyped and imputed variants in Melanesians (607 cases and 1,229 controls) before follow-up of suggestive loci in three further ancestral groups: Polynesians, South Asians and Mixed or other populations (totalling 399 cases and 617 controls). We identify a novel susceptibility signal in the immunoglobulin heavy chain (IGH) locus centring on a haplotype of nonsynonymous variants in the IGHV4-61 gene segment corresponding to the IGHV4-61*02 allele. We show each copy of IGHV4-61*02 is associated with a 1.4-fold increase in the risk of RHD (odds ratio 1.43, 95% confidence intervals 1.27-1.61, P=4.1 × 10(-9)). These findings provide new insight into the role of germline variation in the IGH locus in disease susceptibility. |
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Country | Count | As % |
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United States | 6 | 24% |
United Kingdom | 4 | 16% |
Switzerland | 3 | 12% |
Sweden | 2 | 8% |
Germany | 1 | 4% |
India | 1 | 4% |
Unknown | 8 | 32% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 15 | 60% |
Scientists | 8 | 32% |
Science communicators (journalists, bloggers, editors) | 1 | 4% |
Practitioners (doctors, other healthcare professionals) | 1 | 4% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 93 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Researcher | 18 | 19% |
Student > Master | 13 | 14% |
Student > Ph. D. Student | 11 | 12% |
Student > Doctoral Student | 8 | 9% |
Student > Bachelor | 7 | 8% |
Other | 16 | 17% |
Unknown | 20 | 22% |
Readers by discipline | Count | As % |
---|---|---|
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Agricultural and Biological Sciences | 17 | 18% |
Biochemistry, Genetics and Molecular Biology | 13 | 14% |
Immunology and Microbiology | 12 | 13% |
Nursing and Health Professions | 3 | 3% |
Other | 8 | 9% |
Unknown | 22 | 24% |