Abstract
Balanced chromosomal abnormalities (BCAs) represent a relatively untapped reservoir of single-gene disruptions in neurodevelopmental disorders (NDDs). We sequenced BCAs in patients with autism or related NDDs, revealing disruption of 33 loci in four general categories: (1) genes previously associated with abnormal neurodevelopment (e.g., AUTS2, FOXP1, and CDKL5), (2) single-gene contributors to microdeletion syndromes (MBD5, SATB2, EHMT1, and SNURF-SNRPN), (3) novel risk loci (e.g., CHD8, KIRREL3, and ZNF507), and (4) genes associated with later-onset psychiatric disorders (e.g., TCF4, ZNF804A, PDE10A, GRIN2B, and ANK3). We also discovered among neurodevelopmental cases a profoundly increased burden of copy-number variants from these 33 loci and a significant enrichment of polygenic risk alleles from genome-wide association studies of autism and schizophrenia. Our findings suggest a polygenic risk model of autism and reveal that some neurodevelopmental genes are sensitive to perturbation by multiple mutational mechanisms, leading to variable phenotypic outcomes that manifest at different life stages.
| Originalsprog | Engelsk |
|---|---|
| Tidsskrift | Cell |
| Vol/bind | 149 |
| Udgave nummer | 3 |
| Sider (fra-til) | 525-37 |
| Antal sider | 13 |
| ISSN | 0092-8674 |
| DOI | |
| Status | Udgivet - 27 apr. 2012 |
Emneord
- Autistic Disorder
- Child
- Child Development Disorders, Pervasive
- Chromosome Aberrations
- Chromosome Breakage
- Chromosome Deletion
- DNA Copy Number Variations
- Genetic Predisposition to Disease
- Genome-Wide Association Study
- Humans
- Nervous System
- Schizophrenia
- Sequence Analysis, DNA
- Signal Transduction