11p15 4 Microduplication Syndrome C4749508
A rare genetic disorder involving duplication of material on chromosome 11, leading to varied developmental features. Requires individualized medical assessment.
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.
Warning signs - seek immediate care
Congenital heart defect
Structural heart abnormalities present at birth, which may include septal defects or other cardiac malformations.
Seek immediate medical care if symptoms include difficulty breathing, cyanosis, or poor feeding in newborns.
Seizures
Recurrent seizure activity that may vary in type and severity, requiring neurological evaluation and management.
Seek emergency care for any new onset seizure or if seizure lasts more than 5 minutes.
Global developmental delay
(neurologic)Significant delays in reaching developmental milestones including motor, speech, and cognitive skills during early childhood.
Frequency: 80-90% of patients
Speech and language delay
(neurologic)Delayed onset of speech and language development, often with expressive language more affected than receptive language.
Frequency: 75-85% of patients
Hypotonia
(neurologic)Reduced muscle tone present from infancy, affecting posture, movement, and motor coordination.
Frequency: 50-60% of patients
Failure to thrive
(constitutional)Poor weight gain and growth velocity during infancy and early childhood despite adequate caloric intake.
Frequency: 40-50% of patients
Autism spectrum traits
(neurologic)Features consistent with autism spectrum disorder including social communication difficulties and repetitive behaviors.
Frequency: 35-45% of patients
Feeding difficulties
(gastrointestinal)Problems with feeding including difficulty with sucking, swallowing, or transitioning to solid foods in infancy.
Frequency: 40-50% of patients
Genitourinary anomalies
(genitourinary)Structural abnormalities of the genital or urinary tract, which may include kidney or urinary tract malformations.
Frequency: 15-20% of patients
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
Comprehensive diagnostic evaluation
Thorough clinical assessment including detailed history, physical examination, and coordination of specialty referrals to identify all manifestations of the microduplication. May include neuroimaging, cardiac evaluation, and developmental screening.
Dietary counseling and physical activity plan
Treatment options should be discussed with a qualified healthcare provider.
Family-centered genetic counseling
Provision of genetic counseling services to help families understand the diagnosis, inheritance implications, and available resources. Addresses emotional aspects and facilitates informed decision-making about family planning.
Additional treatment options
Early intervention services
Implementation of early childhood intervention programs including speech therapy, occupational therapy, and developmental support as indicated. Services tailored to individual needs identified through assessment.
psychologicalMotor development support
Physical therapy services to address gross and fine motor delays, hypotonia, or coordination difficulties associated with the condition. Includes therapeutic exercises, adaptive techniques, and equipment recommendations.
physical_therapyDevelopmental surveillance program
Longitudinal monitoring of developmental progress, learning abilities, and behavioral patterns throughout childhood and adolescence. Regular screening allows for timely identification of emerging needs.
monitoringWhen 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 11p15 4 Microduplication Syndrome C4749508?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
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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.
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