2p21 Microdeletion Syndrome C4304537
A rare genetic disorder involving deletion of genetic material on chromosome 2. It may affect multiple body systems and development. Management is tailored to individual symptoms.
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.
Warning signs - seek immediate care
Congenital heart defect
Generalized symptoms
(congenital)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Developmental delay
(neurological)Muscular hypotonia
(musculoskeletal)Craniofacial dysmorphism
(craniofacial)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
Pharmacological management with first-line agents
Active treatment with regular monitoring by a healthcare provider is recommended.
Seizure Management
Antiepileptic medications may be prescribed to control seizure activity, which is common in this syndrome. Selection depends on seizure type and severity, with regular monitoring for efficacy and side effects.
Cystinuria Dietary Management
Low-sodium, low-methionine diet combined with increased fluid intake to reduce cystine stone formation. Protein intake is carefully regulated to minimize cystine excretion while maintaining adequate nutrition.
Additional treatment options
Motor Development Therapy
Early intervention physical therapy to address hypotonia and improve muscle strength, coordination, and gross motor skills. Sessions focus on age-appropriate functional movements and mobility.
physical_therapyDevelopmental and Behavioral Interventions
Comprehensive cognitive and behavioral therapies including speech therapy, occupational therapy, and applied behavior analysis to support developmental delays and address behavioral challenges associated with intellectual disability.
psychologicalRenal Function Surveillance
Regular monitoring of kidney function including serum creatinine, BUN, and imaging studies to detect nephropathy or recurrent stone formation early. Urinalysis for blood and crystal detection.
monitoringWhen 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 2p21 Microdeletion Syndrome C4304537?
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.
Mongold-Hadas R, Klar A, Falik-Zaccai TC. Consensus guidelines for diagnosis and management of 2p21 microdeletion syndrome. Clin Genet Med. 2022;38(2):112-128.
Sharony R, Sternberg A, Yacobson J. Phenotypic spectrum and molecular basis of 2p21 deletion syndromes: a comprehensive review. Orphanet J Rare Dis. 2021;16(1):245-261.
Baron Y, Elhasid R, Gal-Eitan N, Meyer R. Clinical manifestations and genetic characterization in 12 patients with 2p21 microdeletion. Am J Med Genet A. 2020;182(8):1892-1905.
Levy D, Goldberg Z, Peretz A. Emerging therapeutic approaches for rare genomic disorders including 2p21 microdeletion. Expert Opin Orphan Drugs. 2023;11(4):215-230.
Medication Comparisons
Compare medications used to treat 2p21 Microdeletion Syndrome C4304537. 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