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Meta-analysis of genome-wide studies identifies MEF2C SNPs associated with bone mineral density at forearm
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2013 (Engelska)Ingår i: Journal of Medical Genetics, ISSN 0022-2593, E-ISSN 1468-6244, Vol. 50, nr 7, s. 473-478Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Background Forearm fractures affect 1.7 million individuals worldwide each year and most occur earlier in life than hip fractures. While the heritability of forearm bone mineral density (BMD) and fracture is high, their genetic determinants are largely unknown. Aim To identify genetic variants associated with forearm BMD and forearm fractures. Methods BMD at distal radius, measured by dual-energy x-ray absorptiometry, was tested for association with common genetic variants. We conducted a meta-analysis of genome-wide association studies for BMD in 5866 subjects of European descent and then selected the variants for replication in 715 Mexican American samples. Gene-based association was carried out to supplement the single-nucleotide polymorphism (SNP) association test. We then tested the BMD-associated SNPs for association with forearm fracture in 2023 cases and 3740 controls. Results We found that five SNPs in the introns of MEF2C were associated with forearm BMD at a genome-wide significance level (p<5x10(-8)) in meta-analysis (lead SNP, rs11951031[T] -0.20 SDs per allele, p=9.01x10(-9)). The gene-based association test suggested an association between MEF2C and forearm BMD (p=0.003). The association between MEF2C variants and risk of fracture did not achieve statistical significance (SNP rs12521522[A]: OR=1.14 (95% CI 0.92 to 1.35), p=0.14). Meta-analysis also revealed two genome-wide suggestive loci at CTNNA2 and 6q23.2. Conclusions These findings demonstrate that variants at MEF2C were associated with forearm BMD, implicating this gene in the determination of BMD at forearm.

Ort, förlag, år, upplaga, sidor
2013. Vol. 50, nr 7, s. 473-478
Nationell ämneskategori
Medicinsk genetik
Identifikatorer
URN: urn:nbn:se:umu:diva-76779DOI: 10.1136/jmedgenet-2012-101287ISI: 000320165600008Scopus ID: 2-s2.0-84883137709OAI: oai:DiVA.org:umu-76779DiVA, id: diva2:637166
Tillgänglig från: 2013-07-16 Skapad: 2013-07-15 Senast uppdaterad: 2023-03-24Bibliografiskt granskad

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Bergström, UlricaPettersson-Kymmer, Ulrika

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Bergström, UlricaPettersson-Kymmer, Ulrika
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OrtopediKlinisk farmakologiInstitutionen för folkhälsa och klinisk medicin
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Journal of Medical Genetics
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