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DUF1220 Dosage Is Linearly Associated with Increasing Severity of the Three Primary Symptoms of Autism

English version České info

Autism Spectrum Disorder (ASD) is a common behaviorally defined condition noted by impairments in social reciprocity and communicative abilities and exaggerated repetitive behaviors and stereotyped interests. Individuals with ASD frequently have a larger and more rapidly growing brain than their typically developing peers. Given the widely documented heritability suggesting that ASD is predominantly a genetic condition and the well-established link between ASD and abnormal brain growth patterns, genes involved in brain growth would be excellent candidates to study regarding ASD. One such candidate is DUF1220, a highly copy number polymorphic protein domain that we have previously linked to brain evolution and brain size. However, due to the extreme copy number variability of DUF1220, it has not been directly investigated in previous genome wide polymorphism studies searching for genes important in ASD. Here we show that, in individuals with ASD, 1) DUF1220 subtype CON1 is highly variable, ranging from 56 to 88 copies, and 2) the copy number of CON1 is associated, in a linear dose-response manner, with increased severity of each of the three primary symptoms of ASD: as CON1 copy number increases each of the three primary symptoms of ASD (impaired social reciprocity, impaired communicative ability and increased repetitive behaviors) become incrementally worse.

Vyšlo v časopise: DUF1220 Dosage Is Linearly Associated with Increasing Severity of the Three Primary Symptoms of Autism. PLoS Genet 10(3): e32767. doi:10.1371/journal.pgen.1004241
Kategorie: Research Article
prolekare.web.journal.doi_sk: https://doi.org/10.1371/journal.pgen.1004241

Souhrn

Autism Spectrum Disorder (ASD) is a common behaviorally defined condition noted by impairments in social reciprocity and communicative abilities and exaggerated repetitive behaviors and stereotyped interests. Individuals with ASD frequently have a larger and more rapidly growing brain than their typically developing peers. Given the widely documented heritability suggesting that ASD is predominantly a genetic condition and the well-established link between ASD and abnormal brain growth patterns, genes involved in brain growth would be excellent candidates to study regarding ASD. One such candidate is DUF1220, a highly copy number polymorphic protein domain that we have previously linked to brain evolution and brain size. However, due to the extreme copy number variability of DUF1220, it has not been directly investigated in previous genome wide polymorphism studies searching for genes important in ASD. Here we show that, in individuals with ASD, 1) DUF1220 subtype CON1 is highly variable, ranging from 56 to 88 copies, and 2) the copy number of CON1 is associated, in a linear dose-response manner, with increased severity of each of the three primary symptoms of ASD: as CON1 copy number increases each of the three primary symptoms of ASD (impaired social reciprocity, impaired communicative ability and increased repetitive behaviors) become incrementally worse.

Zdroje

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