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Journal article

Sex bias in autism spectrum disorder in neurofibromatosis type 1

Abstract:

Background

Despite extensive literature, little is known about the mechanisms underlying sex bias in autism spectrum disorder (ASD). This study investigates the sex differences in ASD associated with neurofibromatosis type 1, a single-gene model of syndromic autism.

Methods

We analysed data from n = 194 children aged 4–16 years with neurofibromatosis type 1. Sex differences were evaluated across the Autism Diagnostic Interview-Revised (ADI-R), Autism Diagnostic Observation Schedule (ADOS), verbal IQ, Social Responsiveness Scale (SRS) and Conners questionnaires.

Results

There was 2.68:1 male:female ratio in children meeting ASD criteria on the deep phenotyping measures. On symptom profile, males with neurofibromatosis type 1 (NF1) + ASD were more impaired on reciprocal social interaction and communication domains of the ADI-R but we found no differences on the restricted, repetitive behaviours (RRBs) domain of the ADI-R and no differences on the social on the ADOS. NF1 ASD males and females were comparable on verbal IQ, and the inattention/hyperactivity domains of the Conners questionnaire.

Conclusions

There is a significant male bias in the prevalence of ASD in NF1. The phenotypic profile of NF1 + ASD cases includes greater social communication impairment in males. We discuss the implications of our findings and the rationale for using NF1 as a model for investigating sex bias in idiopathic ASD.

Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1186/s11689-016-9159-4

Authors


More by this author
Role:
Author
ORCID:
0000-0002-4472-4583
More by this author
Institution:
University of Oxford
Division:
Medical Sciences Division
Department:
Nuffield Dept of Population Health
Sub department:
Cancer Epidemiology Unit
Oxford college:
Somerville College
Role:
Author
ORCID:
0000-0002-0143-181X


Publisher:
BioMed Central
Journal:
Journal of Neurodevelopmental Disorders More from this journal
Volume:
8
Issue:
1
Pages:
26
Publication date:
2016-07-26
Acceptance date:
2016-07-05
DOI:
EISSN:
1866-1955
ISSN:
1866-1947
Pmid:
27516813


Language:
English
Keywords:
Pubs id:
pubs:640481
UUID:
uuid:28974f48-8631-424f-a0b1-12b7ac141678
Local pid:
pubs:640481
Source identifiers:
640481
Deposit date:
2018-11-20

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