Identification of common variants associated with human hippocampal and intracranial volumes.
Nat Genet
; 44(5): 552-61, 2012 Apr 15.
Article
en En
| MEDLINE
| ID: mdl-22504417
ABSTRACT
Identifying genetic variants influencing human brain structures may reveal new biological mechanisms underlying cognition and neuropsychiatric illness. The volume of the hippocampus is a biomarker of incipient Alzheimer's disease and is reduced in schizophrenia, major depression and mesial temporal lobe epilepsy. Whereas many brain imaging phenotypes are highly heritable, identifying and replicating genetic influences has been difficult, as small effects and the high costs of magnetic resonance imaging (MRI) have led to underpowered studies. Here we report genome-wide association meta-analyses and replication for mean bilateral hippocampal, total brain and intracranial volumes from a large multinational consortium. The intergenic variant rs7294919 was associated with hippocampal volume (12q24.22; N = 21,151; P = 6.70 × 10(-16)) and the expression levels of the positional candidate gene TESC in brain tissue. Additionally, rs10784502, located within HMGA2, was associated with intracranial volume (12q14.3; N = 15,782; P = 1.12 × 10(-12)). We also identified a suggestive association with total brain volume at rs10494373 within DDR2 (1q23.3; N = 6,500; P = 5.81 × 10(-7)).
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Cromosomas Humanos Par 12
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Encéfalo
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Polimorfismo de Nucleótido Simple
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Neuroimagen
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Hipocampo
Tipo de estudio:
Diagnostic_studies
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Risk_factors_studies
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Systematic_reviews
Límite:
Humans
Idioma:
En
Revista:
Nat Genet
Asunto de la revista:
GENETICA MEDICA
Año:
2012
Tipo del documento:
Article
País de afiliación:
Estados Unidos