Related Experiment Video
Updated: Jun 24, 2026
05:51
A Strategy to Identify de Novo Mutations in Common Disorders such as Autism and Schizophrenia
Published on: June 15, 2011
A large-scale screen for coding variants in SERT/SLC6A4 in autism spectrum disorders
Takeshi Sakurai1, Jennifer Reichert, Ellen J Hoffman
1Laboratory of Molecular Neuropsychiatry, the Seaver Autism Research Center, Mount Sinai School of Medicine, New York, NY 10029, USA.
Summary
Rare variants in the SLC6A4 gene do not appear to increase autism risk or influence rigid-compulsive behaviors in individuals with autism spectrum disorder. This study found no significant genetic association, suggesting SLC6A4 is unlikely to play a major role.
Area of Science:
- Genetics
- Neurodevelopmental Disorders
- Behavioral Science
Background:
- Autism spectrum disorder (ASD) is a complex neurodevelopmental condition.
- Rigid-compulsive behaviors are frequently observed in individuals with ASD.
- The serotonin transporter gene (SLC6A4) is a candidate gene for neurodevelopmental and behavioral traits.
Purpose of the Study:
- To investigate the hypothesis that rare variants in SLC6A4 contribute to autism susceptibility.
- To examine the association between rare SLC6A4 variants and rigid-compulsive behaviors in autism.
Main Methods:
- Screening for rare exonic variants in SLC6A4 using high-throughput methods and sequencing.
- Comparing the frequency of rare SLC6A4 variants in a large cohort of unrelated autism cases (approx. 350) and controls (approx. 420).
- Analyzing the association between rare coding variants in SLC6A4 and rigid-compulsive trait scores within the autism cohort.
Main Results:
- No significant difference was found in the frequency of rare exonic variants in SLC6A4 between autism cases and controls.
- The analysis remained non-significant regardless of the definition used for rare variants.
- No association was detected between rare coding variants in SLC6A4 and the severity of rigid-compulsive traits in individuals with autism spectrum disorder.
Conclusions:
- The findings do not support a significant role for rare coding variants in SLC6A4 in the susceptibility to autism spectrum disorder.
- The study also does not support a significant role for SLC6A4 in the manifestation of rigid-compulsive traits within the context of autism spectrum disorder.
Related Concept Videos
02:46Genetic Screens
Genetic screens are tools used to identify genes and mutations responsible for phenotypes of interest. Genetic screens help identify individuals or a group of people at risk of developing genetic diseases and help them with early intervention, targeted therapy, and reproductive options.
Forward genetic screens
Forward or “classical” genetic screens involve creating random mutations in an organism’s DNA using radiation, mutagens, or insertion of additional bases, which result in visible changes...
Forward genetic screens
Forward or “classical” genetic screens involve creating random mutations in an organism’s DNA using radiation, mutagens, or insertion of additional bases, which result in visible changes...
01:19Autism Spectrum Disorder
Autism spectrum disorder (ASD) is a neurodevelopmental condition marked by persistent deficits in social communication and interaction alongside restrictive and repetitive behaviors or interests. ASD is sometimes accompanied by intellectual impairment.
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.