Neuro-Behavioral Phenotype in 16p11.2 Duplication: A Case Series

Area of Science:

• Genetics
• Neuroscience
• Developmental Biology

Background:

• Chromosome 16p11.2 duplications are a significant genetic cause of autism spectrum disorder (ASD) and other neurodevelopmental disorders.
• Despite their known association, comprehensive data on the neurobehavioral phenotype of individuals with 16p11.2 duplications remain limited.

Observation:

• This report details a small cohort of five children with 16p11.2 duplication, focusing on their neurobehavioral characteristics.
• The observed phenotypes were highly heterogeneous, varying in presentation and severity.

Findings:

• Patient presentations ranged from learning disorders in children with typical intelligence quotients to autism spectrum disorder (ASD) with intellectual disability.
• The study confirms significant variability in neuropsychiatric phenotypes associated with 16p11.2 duplication.

Implications:

• The wide phenotypic variability underscores the complex genetic architecture of neurodevelopmental disorders.
• Additional genetic and non-genetic risk factors likely contribute to the diverse clinical presentations, necessitating individualized diagnostic and therapeutic approaches.