A genome-wide association study identifies multiple loci for variation in human ear morphology.

A genome-wide association study identifies multiple loci for variation in human ear morphology.
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DOI:
10.1038/ncomms8500
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发表时间:
2015-06-24
影响因子:
16.6
通讯作者:
Ruiz-Linares, Andres
Ruiz-Linares, Andres
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Adhikari, Kaustubh;Reales, Guillermo;Smith, Andrew J. P.;Konka, Esra;Palmen, Jutta;Quinto-Sanchez, Mirsha;Acuna-Alonzo, Victor;Jaramillo, Claudia;Arias, William;Fuentes, Macarena;Pizarro, Maria;Barquera Lozano, Rodrigo;Macin Perez, Gaston;Gomez-Valdes, Jorge;Villamil-Ramirez, Hugo;Hunemeier, Tabita;Ramallo, Virginia;Silva de Cerqueira, Caio C.;Hurtado, Malena;Villegas, Valeria;Granja, Vanessa;Gallo, Carla;Poletti, Giovanni;Schuler-Faccini, Lavinia;Salzano, Francisco M.;Bortolini, Maria-Catira;Canizales-Quinteros, Samuel;Rothhammer, Francisco;Bedoya, Gabriel;Calderon, Rosario;Rosique, Javier;Cheeseman, Michael;Bhutta, Mahmood F.;Humphries, Steve E.;Gonzalez-Jose, Rolando;Headon, Denis;Balding, David;Ruiz-Linares, Andres

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Here we report a genome-wide association study for non-pathological pinna morphology in over 5,000 Latin Americans. We find genome-wide significant association at seven genomic regions affecting: lobe size and attachment, folding of antihelix, helix rolling, ear protrusion and antitragus size (linear regression P values 2 × 10−8 to 3 × 10−14). Four traits are associated with a functional variant in the Ectodysplasin A receptor (EDAR) gene, a key regulator of embryonic skin appendage development. We confirm expression of Edar in the developing mouse ear and that Edar-deficient mice have an abnormally shaped pinna. Two traits are associated with SNPs in a region overlapping the T-Box Protein 15 (TBX15) gene, a major determinant of mouse skeletal development. Strongest association in this region is observed for SNP rs17023457 located in an evolutionarily conserved binding site for the transcription factor Cartilage paired-class homeoprotein 1 (CART1), and we confirm that rs17023457 alters in vitro binding of CART1. The shape of the pinna varies widely in the general human population but the genetic basis of this variation is unknown. Here Adhikari et al. conduct a genome-wide association study in Latin Americans and discover seven gene regions influencing pinna morphology, including EDAR and TBX15.
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