ArticleJournal of intellectual disability research : JIDR2025
A comprehensive overview of neuropsychiatric symptoms in adolescents with 22q11.2 deletion syndrome.
Article in Journal of intellectual disability research : JIDR, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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- A comprehensive overview of neuropsychiatric symptoms in adolescents with 22q11.2 deletion syndrome.Journal of intellectual disability research : JIDR · 2025Article
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Abstract
backgroundThe 22q11.2 deletion syndrome (22q11DS) is associated with a variety of neuropsychiatric outcomes that vary across deletion carriers. We adopted a dimensional approach to provide a comprehensive overview of neuropsychiatric symptom expression in adolescents with 22q11DS and further our understanding of the observed phenotypical heterogeneity.
methodsParticipants were 208 adolescents with 22q11DS between 10 and 19 years old. Semi-structured clinical interviews and IQ tests were used to quantify symptom expression on multiple symptom dimensions, some reflecting DSM-IV diagnostic domains. We investigated symptom expression in those with and without a formal DSM-IV classification and examined between and within symptom dimensions. We used correlation analyses to explore associations between different symptom dimensions.
resultsWe demonstrated inter-individual differences in symptom expression, both between and within neuropsychiatric symptom dimensions. On most symptom dimensions, more than 50% of adolescents expressed at least one clinically relevant symptom. In addition, a significant proportion of youth without a formal DSM-IV diagnosis reported clinically relevant symptoms (e.g. >85% of those without an ADHD diagnosis reported ADHD symptoms). The exploratory correlation analysis indicated mostly positive correlations between symptom dimensions.
conclusionsThe finding that most adolescents with 22q11DS express neuropsychiatric symptoms, even in the absence of a DSM-IV classification, has substantial ramifications for guiding adequate support. Findings may spur further research into the dimensional structure of neuropsychiatric symptoms in 22q11DS and aid in uncovering mechanisms that contribute to symptom expression. Ultimately, this provides leads to improve clinical care for 22q11DS and to understand phenotypical variation in other high-risk genetic variants.
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