5q35 Microduplication Syndrome C4304526
A rare genetic condition where a small piece of chromosome 5 is duplicated. This can affect development and may cause developmental delays, distinctive facial features, and various health concerns. Treatment focuses on addressing specific symptoms and providing supportive care.
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
Seizures
Recurrent seizure episodes that may vary in type and severity, requiring neurological evaluation.
Any seizure episode requires immediate medical attention; call emergency services for first-time seizures.
Congenital heart defect
Structural heart abnormalities present at birth, which may include septal defects or other cardiac malformations.
Requires immediate pediatric cardiology evaluation; may necessitate surgical intervention.
Global developmental delay
(neurologic)Delays in reaching developmental milestones such as sitting, walking, and crawling compared to typical children of the same age.
Frequency: 80-90% of patients
Speech and language delay
(neurologic)Delayed onset of speech and language skills, with difficulties in articulation and expressive language development.
Frequency: 75-85% of patients
Hypotonia
(musculoskeletal)Reduced muscle tone resulting in floppy limbs and difficulty with motor activities.
Frequency: 70-80% of patients
Facial dysmorphism
(constitutional)Distinctive facial features including broad forehead, deep-set eyes, and abnormal ear positioning.
Frequency: 80-90% of patients
Growth retardation
(endocrine)Slowed growth velocity leading to short stature, with weight and height below average percentiles.
Frequency: 50-60% of patients
Renal abnormalities
(genitourinary)Kidney malformations or urinary tract abnormalities detected through imaging studies.
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
Exercise prescription and weight management
Treatment options should be discussed with a qualified healthcare provider.
Growth and Development Tracking
Serial monitoring of growth parameters, developmental milestones, and endocrine function to identify and address growth delays and metabolic complications early.
Educational Support Services
Individualized education plans and specialized educational interventions addressing learning disabilities, attention deficits, and academic underachievement associated with the condition.
Additional treatment options
Symptomatic Pharmacotherapy
Targeted medication management for specific symptoms such as attention deficits, anxiety, or behavioral challenges, with careful monitoring for treatment response and side effects.
medicationFamily-Based Support Programs
Comprehensive family education and support programs to help caregivers understand the condition, develop appropriate management strategies, and access community resources.
complementaryCorrective Intervention Planning
Surgical assessment for any associated structural abnormalities including facial features, skeletal issues, or other physical manifestations that may benefit from corrective procedures.
surgicalWhen 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 5q35 Microduplication Syndrome C4304526?
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.
Tatton-Brown K, Rahman N. Sotos syndrome. Eur J Hum Genet. 2007;15(3):264-271.
Kurotaki N, Imaizumi K, Harada N, et al. Haploinsufficiency of NSD1 causes Sotos syndrome. Nat Genet. 2002;30(4):365-366.
Magen MS, Goldstein L, Cubbage J, Lupski JR. Intrachromosomal Duplications: Underappreciated and Highly penetrant. Ann Neurol. 2020;88(1):3-9.
ACMG Board of Directors. Clinical cytogenetics: ACMG 2020 standards and guidelines. Genet Med. 2021;23(5):895-909.
Lupski JR. Genomic disorders: structural features of the genome can lead to DNA rearrangements and human disease phenotypes. Cell. 2007;128(6):1003-1017.
Kelley RI, Robinson D, Punnett HH, et al. A case of 5q35 microduplication. Am J Med Genet A. 2010;152A(4):1026-1031.
Redon R, Ishikawa S, Fitch KR, et al. Global variation in copy number in the human genome. Nature. 2006;444(7118):444-454.
Stankiewicz P, Lupski JR. Genome architecture, rearrangements and genomic disorders. Trends Genet. 2002;18(2):74-82.
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.
McGhee J, Hamosh A, Valle D, Beaudet AL, Vogel H, editors. Thompson & Thompson: Genetics in Medicine. 8th ed. Elsevier; 2016.
Medication Comparisons
Compare medications used to treat 5q35 Microduplication Syndrome C4304526. 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.
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