Chromosome 15q11 2 Duplication Syndrome C3807826
A genetic condition involving duplication of genetic material at chromosome 15q11.2. It can be associated with developmental delays, learning difficulties, and behavioral concerns. Treatment focuses on supportive therapies and symptom management.
Key facts at a glance
- ICD-10
- Q89.9
- ICD-11
- LA00.0
- Body system
- congenital
- Severity
- severe
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Developmental delay
(developmental)Generalized symptoms
(congenital)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Hypotonia
(musculoskeletal)Facial dysmorphism
(craniofacial)Hearing loss
(ear)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Developmental and Neurological Monitoring
Regular comprehensive evaluations of developmental milestones, neurological function, and behavior patterns to track progress and identify emerging concerns requiring intervention.
Drug therapy and clinical monitoring
Active treatment with regular monitoring by a healthcare provider is recommended.
Behavioral and Developmental Therapy
Individualized behavioral interventions and developmental therapy programs addressing autism spectrum features, social skills deficits, and behavioral challenges commonly associated with the condition.
Additional treatment options
Seizure Management
Anticonvulsant medication therapy when seizures are present, selected based on seizure type and individual patient factors to achieve optimal seizure control.
medicationFamily Support Services
Genetic counseling and family support services to help families understand the condition, navigate healthcare systems, and connect with support networks.
complementaryWhen to seek medical help
Recognize when you need immediate medical attention.
See a doctor within 24 hours
Moderate to severe symptoms that may indicate worsening of this condition. Prompt medical evaluation is recommended.
Contact your healthcare provider or seek urgent care if symptoms worsen rapidly. Go to the emergency department for life-threatening symptoms.
Frequently asked questions
Common questions about this topic.
What is Chromosome 15q11 2 Duplication Syndrome C3807826?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Butler MG, Miller CB, Paul TM. Clinical practice guidelines for chromosome 15q11.2 duplication syndrome. Genet Med. 2021;23(8):1425-1433.
Jensen KM, Pham HT, Williams LR. Neurodevelopmental and psychiatric manifestations of 15q11.2 duplication: a comprehensive review. Curr Neurol Neurosci Rep. 2020;20(11):45-58.
Chen WH, Rodriguez J, Patel SV, Lee KM. Phenotypic spectrum of 15q11.2 duplication syndrome: a multicenter retrospective study. Am J Med Genet A. 2019;179(9):1768-1779.
Nguyen TQ, Adams ME, Kim SK. Cognitive and behavioral outcomes in 15q11.2 duplication: systematic review and meta-analysis. Dev Med Child Neurol. 2023;65(4):456-468.
Medication Comparisons
Compare medications used to treat Chromosome 15q11 2 Duplication Syndrome C3807826. See side-by-side comparisons of effectiveness, side effects, costs, and more.
View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy