Recent ultra-rare inherited variants implicate new autism candidate risk genes.
Nat Genet
; 53(8): 1125-1134, 2021 08.
Article
en En
| MEDLINE
| ID: mdl-34312540
ABSTRACT
Autism is a highly heritable complex disorder in which de novo mutation (DNM) variation contributes significantly to risk. Using whole-genome sequencing data from 3,474 families, we investigate another source of large-effect risk variation, ultra-rare variants. We report and replicate a transmission disequilibrium of private, likely gene-disruptive (LGD) variants in probands but find that 95% of this burden resides outside of known DNM-enriched genes. This variant class more strongly affects multiplex family probands and supports a multi-hit model for autism. Candidate genes with private LGD variants preferentially transmitted to probands converge on the E3 ubiquitin-protein ligase complex, intracellular transport and Erb signaling protein networks. We estimate that these variants are approximately 2.5 generations old and significantly younger than other variants of similar type and frequency in siblings. Overall, private LGD variants are under strong purifying selection and appear to act on a distinct set of genes not yet associated with autism.
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Proteínas
/
Predisposición Genética a la Enfermedad
/
Trastorno del Espectro Autista
Tipo de estudio:
Etiology_studies
/
Risk_factors_studies
Límite:
Humans
Idioma:
En
Revista:
Nat Genet
Asunto de la revista:
GENETICA MEDICA
Año:
2021
Tipo del documento:
Article
País de afiliación:
Estados Unidos