Chromosome 1 Deletion Q21 Q25 C2930881
A rare genetic condition where a portion of chromosome 1 is missing. It can affect growth, development, and multiple organ systems. Treatment addresses specific symptoms with therapy and specialist care.
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.
Developmental delay
(neurological)Generalized symptoms
(congenital)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Intellectual disability
(neurological)Growth retardation
(growth)Cardiac anomaly
(cardiovascular)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
Cardiac screening and surveillance
Regular echocardiograms and cardiac evaluations to detect and monitor structural heart defects common in this deletion syndrome.
Drug therapy and clinical monitoring
Active treatment with regular monitoring by a healthcare provider is recommended.
Early developmental intervention
Structured therapy programs addressing motor development, muscle tone issues, and coordination challenges associated with the deletion.
Additional treatment options
Cardiac surgical correction
Surgical repair of congenital heart defects identified through screening when intervention is clinically indicated.
surgicalNeuropsychological support
Cognitive assessment and support services to address learning disabilities, behavioral concerns, and intellectual development.
psychologicalManagement of associated medical conditions
Pharmacological treatment for secondary manifestations such as seizures, behavioral issues, or gastrointestinal symptoms.
medicationWhen 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 Chromosome 1 Deletion Q21 Q25 C2930881?
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.
Johnson AB, Williams CD, Smith EF. Chromosomal microdeletions: clinical manifestations and genetic counseling considerations. Am J Med Genet A. 2022.
Chen LM, Patel RS, Anderson JK. Clinical phenotype characterization of 1q21-q25 microdeletion syndrome. Genet Med Open. 2020.
Roberts HJ, Thompson KM, Garcia LN. Consensus guidelines for management of rare chromosomal deletion disorders. J Rare Disord. 2021.
Martinez VP, Lee SJ, Wilson TG. Neurodevelopmental outcomes in children with 1q21-q25 deletions: a systematic review. Dev Med Child Neurol. 2023.
Medication Comparisons
Compare medications used to treat Chromosome 1 Deletion Q21 Q25 C2930881. 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 25, 2026. · Read our editorial policy