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. 2018 Jul 1;43(6):636-644.
doi: 10.1093/jpepsy/jsy002.

Young Adult Outcomes for Children With 22q11 Deletion Syndrome and Comorbid ADHD

Lea E Taylor  1 , Wendy R Kates  2 , Wanda Fremont  2 , Kevin M Antshel  1   2
Affiliations

Young Adult Outcomes for Children With 22q11 Deletion Syndrome and Comorbid ADHD

Lea E Taylor et al. J Pediatr Psychol. .

Abstract

Background: 22q11.2 deletion syndrome (22q11DS) is a common microdeletion syndrome associated with a variety of negative health, cognitive, emotional, and behavioral outcomes. 22q11DS is comorbid with many psychiatric disorders including attention-deficit/hyperactivity disorder (ADHD). The current study aimed to investigate the cognitive, behavioral, and functional outcomes that a childhood ADHD diagnosis predicts to in adulthood.

Methods: This longitudinal study followed 52 individuals with 22q11DS over 9 years. Childhood ADHD was operationalized both categorically (Diagnostic and statistical manual - 4th edition (DSM-IV) ADHD diagnoses) and dimensionally (inattentive and hyperactive-impulsive symptoms) and was tested as predictors of young adult outcomes.

Results: As young adults, children with 22q11DS + baseline ADHD had more parent-reported executive dysfunction and lower levels of clinician-rated overall functioning than those with 22q11DS yet without ADHD. Dimensional symptoms of ADHD in childhood did not predict young adult outcomes. No self-report differences emerged between those with and without baseline ADHD. The majority (82.4%) of individuals with 22q11DS + baseline ADHD were never treated with an ADHD medication.

Conclusions: A categorical diagnosis of ADHD in childhood predicted a greater variety of worse outcomes than dimensional levels of ADHD symptoms. Despite the significant impact of comorbid ADHD in 22q11DS, evidence-based treatment rates were low.

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