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dc.contributor.authorO'Leary, Peter
dc.date.accessioned2017-01-30T13:06:22Z
dc.date.available2017-01-30T13:06:22Z
dc.date.created2014-07-02T20:00:24Z
dc.date.issued2014
dc.identifier.citationMedici, M. and Porcu, E. and Pistis, G. and Teumer, A. and Brown, S. and Jensen, R. and Rawal, R. et al. 2014. Identification of novel genetic loci associated with thyroid peroxidase antibodies and clinical thyroid disease. PLos Genetics. 10 (2): Article ID e1004123.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/28641
dc.identifier.doi10.1371/journal.pgen.1004123
dc.description.abstract

Autoimmune thyroid diseases (AITD) are common, affecting 2-5% of the general population. Individuals with positive thyroid peroxidase antibodies (TPOAbs) have an increased risk of autoimmune hypothyroidism (Hashimoto's thyroiditis), as well as autoimmune hyperthyroidism (Graves' disease). As the possible causative genes of TPOAbs and AITD remain largely unknown, we performed GWAS meta-analyses in 18,297 individuals for TPOAb-positivity (1769 TPOAb-positives and 16,528 TPOAb-negatives) and in 12,353 individuals for TPOAb serum levels, with replication in 8,990 individuals. Significant associations (P<5×10−8) were detected at TPO-rs11675434, ATXN2-rs653178, and BACH2-rs10944479 for TPOAb-positivity, and at TPO-rs11675434, MAGI3-rs1230666, and KALRN-rs2010099 for TPOAb levels. Individual and combined effects (genetic risk scores) of these variants on (subclinical) hypo- and hyperthyroidism, goiter and thyroid cancer were studied. Individuals with a high genetic risk score had, besides an increased risk of TPOAb-positivity (OR: 2.18, 95% CI 1.68–2.81, P = 8.1×10−8), a higher risk of increased thyroid-stimulating hormone levels (OR: 1.51, 95% CI 1.26–1.82, P = 2.9×10−6), as well as a decreased risk of goiter (OR: 0.77, 95% CI 0.66–0.89, P = 6.5×10−4).The MAGI3 and BACH2 variants were associated with an increased risk of hyperthyroidism, which was replicated in an independent cohort of patients with Graves' disease (OR: 1.37, 95% CI 1.22–1.54, P = 1.2×10−7 and OR: 1.25, 95% CI 1.12–1.39, P = 6.2×10−5). The MAGI3 variant was also associated with an increased risk of hypothyroidism (OR: 1.57, 95% CI 1.18–2.10, P = 1.9×10−3). This first GWAS meta-analysis for TPOAbs identified five newly associated loci, three of which were also associated with clinical thyroid disease. With these markers we identified a large subgroup in the general population with a substantially increased risk of TPOAbs. The results provide insight into why individuals with thyroid autoimmunity do or do not eventually develop thyroid disease, and these markers may therefore predict which TPOAb-positives are particularly at risk of developing clinical thyroid dysfunction.

dc.publisherPublic Library of Science
dc.subjectAutoimmune thyroid diseases (AITD)
dc.subjectautoimmune hypothyroidism
dc.subjectgoiter
dc.subjectthyroid cancer
dc.subjectmeta-analyses
dc.subjectpositive thyroid peroxidase antibodies (TPOAbs)
dc.subjectgenetic risk scores
dc.subjecthyperthyroidism
dc.titleIdentification of novel genetic loci associated with thyroid peroxidase antibodies and clinical thyroid disease
dc.typeJournal Article
dcterms.source.volume10
dcterms.source.number2
dcterms.source.startPagee1
dcterms.source.endPagee13
dcterms.source.issn1553-7390
dcterms.source.titlePLos Genetics
curtin.department
curtin.accessStatusOpen access via publisher


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