Management of autism and attention-deficit hyperactivity disorder in Dup15q syndrome
DOI:
https://doi.org/10.18203/2320-6012.ijrms20260270Keywords:
Dup15q, Chromosome 15q11.2-13.1, Prader-Willi, Angelman syndromes, Case reportAbstract
Dup15q syndrome is an uncommon neurogenetic disorder caused by duplications of chromosome 15q11.2-13.1, typically through idic (15) or interstitial duplications. Its prevalence is about 1 in 5,000 births and is characterised by hypotonia, developmental delays, intellectual disability, autism, and seizures, with greater severity in maternally derived duplications. Symptoms overlap with related conditions such as Prader-Willi and Angelman syndromes. Early detection and intervention, supported by a robust database, will improve quality of life. An 11-year-old girl with Dup15q syndrome was referred for psychiatric evaluation due to her emotional and behavioral issues at school. She had a history of developmental delays and persistent autistic traits. Her parents noted early morning awakenings and negative self-talk. At the time of evaluation, she was receiving psychotropic and antiepileptic medications. The review found her restless and tense, with limited insight. To ensure her safety, the school provided one-on-one support during medication adjustments, and she showed some improvement in the following weeks. However, she still faced challenges with sensory dysregulation and emotional reactions. Dup15q syndrome is a complex neurogenetic disorder that requires early detection and intervention for optimal outcomes with genetic testing and personalized care strategies. Addressing the behavioral, social, and sensory challenges associated with the condition is essential, as these difficulties will intensify with age. Ongoing research and the development of support networks are vital to enhancing the quality of life for individuals with Dup15q syndrome and their families.
Metrics
References
National Organization for Rare Disorders. Dup15q syndrome. 2024. Available at: https://rarediseases. org/rare-diseases/dup15q-syndrome/. Accessed on 06 November 2025.
Dup15q Alliance. Signs, symptoms and characteristics. 2025. Available at: https://dup15q. org/understanding-dup15q-syndrome/. Accessed on 06 November 2025.
Kalsner L, Chamberlain SJ. Prader-Willi, Angelman, and 15q11-q13 Duplication Syndromes. Pediatr Clin North Am. 2015;62(3):587-606. DOI: https://doi.org/10.1016/j.pcl.2015.03.004
Ma VK, Mao R, Toth JN, Fulmer ML, Egense AS, Shankar SP. Prader-Willi and Angelman Syndromes: Mechanisms and Management. Application Clin Genet. 2023;16:41-52.
Bittel DC, Kibiryeva N, Butler MG. Expression of 4 genes between chromosome 15 breakpoints 1 and 2 and behavioral outcomes in Prader-Willi syndrome. Pediatrics. 2006;118(4):e1276-83. DOI: https://doi.org/10.1542/peds.2006-0424
Stein RA. Smith's recognizable patterns of human malformation. Arc Dis Childhood. 2007;92(6):562.
Ranasinghe JC, Chandradasa D, Fernando S, Kodithuwakku U, Mandawala DE, Dissanayake VH. Angelman syndrome presenting with a rare seizure type in a patient with 15q11.2 deletion: a case report. J Med Case Rep. 2015;9:142. DOI: https://doi.org/10.1186/s13256-015-0622-8
Battaglia A. The inv dup (15) or idic (15) syndrome (Tetrasomy 15q). Orphanet J Rare Dis. 2008;3:30. DOI: https://doi.org/10.1186/1750-1172-3-30
Urraca N, Cleary J, Brewer V, Pivnick EK, McVicar K, Thibert RL, et al. The interstitial duplication 15q11.2-q13 syndrome includes autism, mild facial anomalies and a characteristic EEG signature. Autism Res. 2013;6(4):268-79. DOI: https://doi.org/10.1002/aur.1284
Nakai N, Nagano M, Saitow F, Watanabe Y, Kawamura Y, Kawamoto A, et al. Serotonin rebalances cortical tuning and behavior linked to autism symptoms in 15q11-13 CNV mice. Sci Adv. 2017;3(6):e1603001. DOI: https://doi.org/10.1126/sciadv.1603001
Castronovo C, Crippa M, Bestetti I, Rusconi D, Russo S, Larizza L, et al. Complex de novo chromosomal rearrangement at 15q11-q13 involving an intrachromosomal triplication in a patient with a severe neuropsychological phenotype: clinical report and review of the literature. Am J Med Genet A. 2015;167A(1):221-30. DOI: https://doi.org/10.1002/ajmg.a.36815