Non-ASD outcomes at 36 months in siblings at familial risk for autism spectrum disorder (ASD): A baby siblings research consortium (BSRC) study

Tony Charman, Gregory S. Young, Jessica Brian, Alice Carter, Leslie J. Carver, Katarzyna Chawarska, Suzanne Curtin, Karen Dobkins, Mayada Elsabbagh, Stelios Georgiades, Irva Hertz-Picciotto, Ted Hutman, Jana M. Iverson, Emily J. Jones, Rebecca Landa, Suzanne Macari, Daniel S. Messinger, Charles A. Nelson, Sally Ozonoff, Celine Saulnier & 5 others Wendy L. Stone, Helen Tager-Flusberg, Sara Jane Webb, Nurit Yirmiya, Lonnie Zwaigenbaum

Research output: Research - peer-reviewArticle

Abstract

We characterized developmental outcomes of a large sample of siblings at familial high-risk of autism spectrum disorder (ASD), who themselves did not have ASD (n = 859), and low-risk controls with no family history of ASD (n = 473). We report outcomes at age 3 years using the Mullen Scales of Early Learning, the Autism Diagnostic Observation Schedule (ADOS), the Autism Diagnostic Interview—Revised (ADI-R) and adaptive functioning on the Vineland Adaptive Behavior Scales. Around 11% of high-risk siblings had mild-to-moderate levels of developmental delay, a rate higher than the low-risk controls. The groups did not differ in the proportion of toddlers with mild-to-moderate language delay. Thirty percent of high-risk siblings had elevated scores on the ADOS, double the rate seen in the low-risk controls. High-risk siblings also had higher parent reported levels of ASD symptoms on the ADI-R and lower adaptive functioning on the Vineland. Males were more likely to show higher levels of ASD symptoms and lower levels of developmental ability and adaptive behavior than females across most measures but not mild-to-moderate language delay. Lower maternal education was associated with lower developmental and adaptive behavior outcomes. These findings are evidence for early emerging characteristics related to the “broader autism phenotype” (BAP) previously described in older family members of individuals with ASD. There is a need for ongoing clinical monitoring of high-risk siblings who do not have an ASD by age 3 years, as well as continued follow-up into school age to determine their developmental and behavioral outcomes. Autism Res 2017, 10: 169–178.

LanguageEnglish (US)
Pages169-178
Number of pages10
JournalAutism Research
Volume10
Issue number1
DOIs
StatePublished - Jan 1 2017

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Siblings
Research
Autism Spectrum Disorder
Autistic Disorder
Psychological Adaptation
Language Development Disorders
Appointments and Schedules
Observation
Interviews
Aptitude
Mothers
Learning
Phenotype
Education

Keywords

  • adaptive functioning
  • autism spectrum disorder
  • broader autism phenotype
  • developmental outcomes
  • high risk siblings

ASJC Scopus subject areas

  • Neuroscience(all)
  • Clinical Neurology
  • Genetics(clinical)

Cite this

Charman, T., Young, G. S., Brian, J., Carter, A., Carver, L. J., Chawarska, K., ... Zwaigenbaum, L. (2017). Non-ASD outcomes at 36 months in siblings at familial risk for autism spectrum disorder (ASD): A baby siblings research consortium (BSRC) study. Autism Research, 10(1), 169-178. DOI: 10.1002/aur.1669

Non-ASD outcomes at 36 months in siblings at familial risk for autism spectrum disorder (ASD) : A baby siblings research consortium (BSRC) study. / Charman, Tony; Young, Gregory S.; Brian, Jessica; Carter, Alice; Carver, Leslie J.; Chawarska, Katarzyna; Curtin, Suzanne; Dobkins, Karen; Elsabbagh, Mayada; Georgiades, Stelios; Hertz-Picciotto, Irva; Hutman, Ted; Iverson, Jana M.; Jones, Emily J.; Landa, Rebecca; Macari, Suzanne; Messinger, Daniel S.; Nelson, Charles A.; Ozonoff, Sally; Saulnier, Celine; Stone, Wendy L.; Tager-Flusberg, Helen; Webb, Sara Jane; Yirmiya, Nurit; Zwaigenbaum, Lonnie.

In: Autism Research, Vol. 10, No. 1, 01.01.2017, p. 169-178.

Research output: Research - peer-reviewArticle

Charman, T, Young, GS, Brian, J, Carter, A, Carver, LJ, Chawarska, K, Curtin, S, Dobkins, K, Elsabbagh, M, Georgiades, S, Hertz-Picciotto, I, Hutman, T, Iverson, JM, Jones, EJ, Landa, R, Macari, S, Messinger, DS, Nelson, CA, Ozonoff, S, Saulnier, C, Stone, WL, Tager-Flusberg, H, Webb, SJ, Yirmiya, N & Zwaigenbaum, L 2017, 'Non-ASD outcomes at 36 months in siblings at familial risk for autism spectrum disorder (ASD): A baby siblings research consortium (BSRC) study' Autism Research, vol 10, no. 1, pp. 169-178. DOI: 10.1002/aur.1669
Charman T, Young GS, Brian J, Carter A, Carver LJ, Chawarska K et al. Non-ASD outcomes at 36 months in siblings at familial risk for autism spectrum disorder (ASD): A baby siblings research consortium (BSRC) study. Autism Research. 2017 Jan 1;10(1):169-178. Available from, DOI: 10.1002/aur.1669
Charman, Tony ; Young, Gregory S. ; Brian, Jessica ; Carter, Alice ; Carver, Leslie J. ; Chawarska, Katarzyna ; Curtin, Suzanne ; Dobkins, Karen ; Elsabbagh, Mayada ; Georgiades, Stelios ; Hertz-Picciotto, Irva ; Hutman, Ted ; Iverson, Jana M. ; Jones, Emily J. ; Landa, Rebecca ; Macari, Suzanne ; Messinger, Daniel S. ; Nelson, Charles A. ; Ozonoff, Sally ; Saulnier, Celine ; Stone, Wendy L. ; Tager-Flusberg, Helen ; Webb, Sara Jane ; Yirmiya, Nurit ; Zwaigenbaum, Lonnie. / Non-ASD outcomes at 36 months in siblings at familial risk for autism spectrum disorder (ASD) : A baby siblings research consortium (BSRC) study. In: Autism Research. 2017 ; Vol. 10, No. 1. pp. 169-178
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