Maternal Interstitial 15q11 2 Q13 1 Duplication Or Triplication Cn381284
This chromosomal condition involves duplication or triplication of genetic material on chromosome 15q11-2 inherited from the mother. It can lead to developmental delays, learning difficulties, and behavioral features. Management includes early intervention and educational support.
Key facts at a glance
- ICD-10
- Q89.9
- ICD-11
- LA00.0
- Body system
- congenital
- Severity
- moderate
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Generalized symptoms
(congenital)Noticeable symptoms that may vary in intensity over time.
Frequency: Common at all stages
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
Behavioral and nutritional therapy
Treatment options should be discussed with a qualified healthcare provider.
Developmental Assessment and Surveillance
Comprehensive developmental monitoring through regular pediatric evaluations to track milestones, identify delays early, and coordinate appropriate early intervention services.
Early Intervention Physical and Occupational Therapy
Structured therapy programs addressing motor delays, hypotonia, and coordination difficulties commonly associated with the 15q11.2-q13.1 region duplication.
Additional treatment options
Behavioral and Autism Spectrum Support
Behavioral interventions including ABA-based approaches and social skills training to address autism spectrum features and behavioral challenges frequently seen in this condition.
psychologicalWeight Management Program
Structured weight management through dietary guidance and activity modification to prevent obesity, which is common in individuals with 15q11.2-q13.1 duplications.
lifestyleFamily Genetic Counseling
Genetic counseling services for families to understand inheritance patterns, recurrence risks, and available reproductive options.
complementaryWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Maternal Interstitial 15q11 2 Q13 1 Duplication Or Triplication Cn381284?
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.
Miller DT, Adam MP, Aradhya S, et al. Consensus statement: chromosomal microarray is a first-tier clinical diagnostic test for individuals with developmental disabilities or congenital anomalies. Am J Hum Genet. 2010;86(5):749-764.
Burnside RD, Pasion R, Mikhail FM, et al. Microdeletion and microduplication syndromes: a review of the phenotypic consequences of copy number variation at 15q11.2-q13.1. J Mol Genet Med. 2015;9(4):155-164.
Picinelli C, Torrissi G, Romano S, et al. Clinical and molecular characterization of patients with maternal 15q11.2-q13.1 duplication: a prospective cohort study. Clin Genet. 2020;97(5):720-731.
Liu R, Smernoff E, Wang J. Neurodevelopmental phenotypes associated with 15q11.2-q13.1 maternal copy number variants: systematic review and meta-analysis. Eur J Hum Genet. 2022;30(8):931-942.
Medication Comparisons
Compare medications used to treat Maternal Interstitial 15q11 2 Q13 1 Duplication Or Triplication Cn381284. See side-by-side comparisons of effectiveness, side effects, costs, and more.
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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 25, 2026. · Read our editorial policy