Distal Monosomy 12q C5438460
A chromosomal disorder where the end of chromosome 12 is missing, causing developmental delays, intellectual disability, and congenital anomalies. Requires multidisciplinary 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.
Warning signs - seek immediate care
Seizures
Developmental delay
(nervous)Generalized symptoms
(congenital)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Facial dysmorphism
(craniofacial)Hand anomalies
(musculoskeletal)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
Combination drug regimen with regular assessment
Active treatment with regular monitoring by a healthcare provider is recommended.
Corrective surgical interventions
Surgical repair of specific structural anomalies associated with distal 12q deletion, which may include cardiac defects, cleft palate, or skeletal abnormalities identified through diagnostic imaging.
Early intervention physical therapy
Developmental physical therapy focusing on gross motor skills, coordination, and muscle tone management. Includes positioning, strengthening, and mobility training.
Additional treatment options
Neurodevelopmental and behavioral support
Comprehensive neuropsychological evaluation and ongoing behavioral therapy to address developmental delays, learning disabilities, and behavioral challenges associated with the chromosomal deletion.
psychologicalComprehensive developmental monitoring
Regular monitoring of growth parameters, developmental milestones, cardiac function, and screening for associated conditions including seizures, vision, and hearing impairments.
monitoringFamily-centered genetic counseling
Ongoing genetic counseling services for the patient and family to understand the condition, inheritance patterns, recurrence risks, and available support resources.
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 Distal Monosomy 12q C5438460?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalMedication Comparisons
Compare medications used to treat Distal Monosomy 12q C5438460. 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