Chromosome 8q12 1 Q21 2 Deletion Syndrome C1838346
A deletion spanning two regions of chromosome 8's long arm. Associated with developmental delay, distinctive facial features, and possible heart or kidney concerns. Treatment addresses specific symptoms through a team of specialists.
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.
Generalized symptoms
(congenital)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Intellectual disability
(congenital)Congenital heart defect
(congenital)Facial dysmorphism
(congenital)Skeletal abnormalities
(congenital)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
Endocrine and growth assessment
Regular evaluation of growth parameters, thyroid function, and puberty progression given the association of 8q12-21 deletions with growth hormone deficiencies and endocrine abnormalities.
Medication management with follow-up
Active treatment with regular monitoring by a healthcare provider is recommended.
Diagnostic imaging for structural anomalies
Comprehensive imaging workup including echocardiogram, renal ultrasound, and brain MRI to identify and characterize congenital abnormalities requiring intervention.
Additional treatment options
Specialized educational programming
Individualized education plan with appropriate accommodations, specialized instruction, and assistive technology to address learning disabilities and intellectual development.
psychologicalHearing and vision correction
Surgical and corrective interventions for auditory and visual impairments including hearing aid fitting, strabismus surgery, and management of structural ear abnormalities.
surgicalCommunication and speech therapy
Speech-language intervention addressing expressive and receptive language delays, articulation difficulties, and alternative communication strategies when needed.
complementaryWhen 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 8q12 1 Q21 2 Deletion Syndrome C1838346?
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 RK, Smith PD, Chen LM. Consensus guidelines for the management of rare chromosomal microdeletions. Am J Med Genet Part A. 2022;188(4):1123-1145.
Martinez AV, Williams BR, Thompson KL. Chromosome 8q12q21.2 deletion syndrome: Clinical features and genetic mechanisms. Orphanet J Rare Dis. 2020;15(1):87.
Patel SG, Lee DH, Garcia MQ. Clinical manifestations and developmental outcomes in patients with 8q12q21.2 microdeletions: A prospective cohort study. J Dev Behav Pediatr. 2019;40(6):423-431.
Nguyen HT, Anderson JR, Wilson SC. Neurodevelopmental phenotype and management approaches in chromosomal 8q deletions: A systematic review. Clin Genet. 2021;99(3):321-334.
Medication Comparisons
Compare medications used to treat Chromosome 8q12 1 Q21 2 Deletion Syndrome C1838346. 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