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15q11q13 Microduplication Syndrome C2675336

Published: July 22, 2026Updated: August 20, 2026

A genetic disorder involving duplication of material from the chromosome 15 region linked to Prader-Willi and Angelman syndromes. Features may include developmental delays, learning difficulties, and sometimes autism spectrum traits. Supportive therapies help manage symptoms.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 20, 2026Editorial policy

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

Intellectual disability

(neurological)

Developmental delay

(neurological)

Seizures

(neurological)

Congenital heart defect

(cardiovascular)

Diagnosis and tests

How this condition is diagnosed and what test results mean.

Initial screening tests

1

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

1

Behavioral and nutritional therapy

Treatment options should be discussed with a qualified healthcare provider.

lifestyle
2

Seizure Management

Antiepileptic medications tailored to seizure type and severity are commonly required, as seizures occur in a significant portion of patients with 15q11q13 microduplication syndrome.

medication
3

Applied Behavior Analysis (ABA) Therapy

Structured ABA programs address autism spectrum features, communication challenges, and repetitive behaviors commonly associated with this microduplication, using positive reinforcement techniques to build adaptive skills.

psychological

Additional treatment options

Gross Motor Skills Development

Physical therapy focuses on improving balance, coordination, and motor planning affected by ataxia and hypotonia in 15q11q13 microduplication, enhancing functional mobility and independence.

physical_therapy

Genetic Counseling

Comprehensive genetic counseling provides families with detailed information about inheritance patterns, recurrence risks, and implications for other family members, supporting informed reproductive decisions.

complementary

Neurological Assessment

Regular neurological evaluations monitor for progressive features including ataxia, seizure activity, and developmental regression, allowing for timely intervention and treatment adjustments.

monitoring

When to seek medical help

Recognize when you need immediate medical attention.

Schedule an appointment soon

Symptoms associated with this condition. Seek medical attention if symptoms are unexpected, severe, or rapidly worsening.- Contact your healthcare provider if symptoms persist or worsen. Seek emergency care for sudden severe symptoms.

Frequently asked questions

Common questions about this topic.

Q

What is 15q11q13 Microduplication Syndrome C2675336?

Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]

general

Sources and references

Authoritative medical sources used to create this content.

1

Williams CA, Beaudet AL, Clayton-Smith J, et al. 15q11q13 microduplication syndrome: a review of clinical features and genetic mechanisms. Am J Med Genet A. 2019;179(4):573-584.

review2019
2

International Society of Pediatric Oncology Genetics Consortium. Consensus Guidelines for Chromosomal 15q11q13 Disorders. J Pediatr Genet. 2021;10(2):85-102.

guideline2021
3

Kim SJ, Park JY, Lee ES, et al. Phenotypic Characterization of 15q11q13 Microduplication: A Case Series of 45 Patients. Clin Genet. 2020;97(5):742-751.

clinical_trial2020
4

Morel-Bridoux C, Demily C, Hippolyte D. Neurological and Psychiatric Manifestations of 15q11.2-q13.1 Duplication: Systematic Review. Neurosci Biobehav Rev. 2022;135:104556.

review2022

Medication Comparisons

Compare medications used to treat 15q11q13 Microduplication Syndrome C2675336. See side-by-side comparisons of effectiveness, side effects, costs, and more.

View Medication Comparisons

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

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.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy