Rationale: Autism Spectrum Disorder (ASD) is defined by deficits in social interaction and communication identified before the age of 3 years. Modified Checklist for Autism in Toddlers (M-CHAT) is a sensitive tool for ASD screening in children 16-23 months. A limited number of studies with a small number of patients have documented the developmental profile of children with ASD during infancy. Retrospective evaluations of videotaped behavior of children with ASD at 8 months and at 12 months identified early signs of ASD. A few studies found early signs of ASD during infancy in siblings of autistic children. Data documenting the age of onset and regression in ASD is controversial and limited. No large prospective studies documented the specific developmental profile of children with ASD starting at 6 months of age. Defining a specific autistic pattern on a developmental screening test could help identify infants at risk for ASD and improve their outcome through earlier diagnosis and treatment. More recently, genetic tests have been shown to aid in early identification of ASD which facilitates earlier intervention. Genetic testing among siblings of children with autism can aid in identification of autism or other related disorders in the siblings.
PURPOSE: The purpose of this study is to learn about the early signs of autism in siblings of children with autism spectrum disorders.
- The investigators will enroll siblings of children with ASD. Those siblings who completed the Red Flags for Communication scale (RFC) at 6 months and/or at 12 months and failed the RFC at 12 months will be given a genetic screening test.
- It is the investigators goal to define a specific autistic pattern on a developmental screening test that could help identify sibling infants at risk for ASD and improve their outcome through earlier diagnosis and treatment and to evaluate if the results of the clinical screening test will correlate with the results of the genetic screening test.
- Study Type: Observational
- Study Design
- Time Perspective: Prospective
- Study Primary Completion Date: December 2015
Arms, Groups and Cohorts
- Siblings of Children with Autism Spectrum Disorders
- This group is comprised of 6-12 month old siblings of a child with an expert clinical diagnosis of autism spectrum disorders.
Clinical Trial Outcome Measures
- Percentage of Children with a High Risk Genetic Score on the ARISK Genetic Test who have a Diagnosis of Autism Spectrum Disorders (ASD) at 24 Months
- Time Frame: 2 years
- Percentage of Children who failed the Red Flags for Communication (RFC) Scale at 12 months who have a Diagnosis of ASD at 24 months
- Time Frame: 2 years
Participating in This Clinical Trial
- The subject must be a sibling of a child with a previous expert clinical diagnosis of Autism Spectrum Disorder.
- Subjects will be included for the genetic test if he/she meets the following criteria:
- At 12 months of age he/she failed two or more items on the RFC with at least one failed critical item
- They have no significant known hearing, vision or motor impairment that will impact on their ability to perform on developmental assessments
- Those children who do not meet the inclusion criteria
- Those who do not speak English will be excluded from this study.
Gender Eligibility: All
Minimum Age: 6 Months
Maximum Age: 36 Months
Are Healthy Volunteers Accepted: Accepts Healthy Volunteers
- Lead Sponsor
- St. Louis University
- IntegraGen SA
- Provider of Information About this Clinical Study
- Principal Investigator: Rolanda Gott, Assoc. Professor of Pediatrics, Professor of Pediatrics – St. Louis University
- Overall Official(s)
- Rolanda Gott, MD, Principal Investigator, St. Louis University
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