Autistic Traits Associated with the Fragile X Premutation Allele: The Neurodevelopmental Profile
Ariel Zucker1,2, Veronica J Hinton1,2
1The Graduate Center, City University of New York, New York, USA.
Developmental Neuropsychology
|May 16, 2024
Summary
Individuals with the Fragile X premutation allele may exhibit subtle autistic traits. This review examines the neurodevelopmental profile and autistic characteristics associated with the FMR1 gene premutation.
Area of Science:
- Neurodevelopmental disorders
- Genetics
- Autism Spectrum Disorder
Background:
- The Fragile X premutation allele (55-200 CGG repeats) in the FMR1 gene is linked to subtle autistic traits, particularly in adults.
- While not meeting full diagnostic criteria for autism spectrum disorder, carriers show increased autism-associated characteristics.
Purpose of the Study:
- To review the neurodevelopmental profile of individuals with the Fragile X premutation allele.
- To specifically examine the presence and developmental trajectory of autistic traits in this population.
Main Methods:
- Literature review focusing on neurodevelopmental studies.
- Analysis of studies examining autistic traits in Fragile X premutation carriers.
- Developmental perspective on observed characteristics.
Main Results:
- Evidence suggests a higher prevalence of subtle autistic traits in Fragile X premutation carriers compared to the general population.
- Autism-associated characteristics appear more frequently reported in adults than children, warranting further investigation into developmental changes.
Conclusions:
- The Fragile X premutation allele is associated with an increased risk for subtle autistic traits.
- Further research is needed to understand the developmental trajectory and potential worsening of these traits over time.
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