Abstract
Autism is a highly heritable neurodevelopmental disorder, and known genetic variants, mostly rare, account only for a small proportion of cases. Here we report a genome-wide association study on autism using two Chinese cohorts as gene discovery (n=2150) and three data sets of European ancestry populations for replication analysis of top association signals. Meta-analysis identified three single-nucleotide polymorphisms, rs936938 (P=4.49 × 10(-8)), non-synonymous rs6537835 (P=3.26 × 10(-8)) and rs1877455 (P=8.70 × 10(-8)), and related haplotypes, AMPD1-NRAS-CSDE1, TRIM33 and TRIM33-BCAS2, associated with autism; all were mapped to a previously reported linkage region (1p13.2) with autism. These genetic associations were further supported by a cis-acting regulatory effect on the gene expressions of CSDE1, NRAS and TRIM33 and by differential expression of CSDE1 and TRIM33 in the human prefrontal cortex of post-mortem brains between subjects with and those without autism. Our study suggests TRIM33 and NRAS-CSDE1 as candidate genes for autism, and may provide a novel insight into the etiology of autism.
Original language | English |
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Pages (from-to) | 1212-1219 |
Number of pages | 8 |
Journal | Molecular Psychiatry |
Volume | 19 |
Issue number | 11 |
DOIs | |
Publication status | Published - Nov 2014 |
Keywords
- African Americans
- Asian Continental Ancestry Group
- Autistic Disorder
- China
- Chromosomes, Human, Pair 1
- Cohort Studies
- DNA-Binding Proteins
- European Continental Ancestry Group
- GTP Phosphohydrolases
- Genetic Predisposition to Disease
- Genome-Wide Association Study
- Haplotypes
- Humans
- Membrane Proteins
- Meta-Analysis as Topic
- Polymorphism, Single Nucleotide
- Prefrontal Cortex
- RNA-Binding Proteins
- Risk
- Transcription Factors