Chromosome 3q29 Microdeletion Syndrome C2674949
A rare genetic disorder involving deletion of a small segment of chromosome 3's long arm. It may cause various developmental and medical concerns, managed with supportive therapies.
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
Generalized symptoms
(congenital)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Intellectual disability
(neurological)Microcephaly
(neurological)Feeding difficulties
(gastrointestinal)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
Comprehensive multidisciplinary monitoring
Regular assessments by genetics, cardiology, neurology, and developmental specialists to track progression and manage complications.
Targeted drug therapy with dose adjustment
Active treatment with regular monitoring by a healthcare provider is recommended.
Neurodevelopmental and behavioral interventions
Early intervention programs including speech, occupational, and behavioral therapy to address developmental delays and behavioral challenges.
Additional treatment options
Symptom-specific pharmacotherapy
Targeted medications for associated conditions such as anxiety, ADHD, or mood disorders that commonly accompany the syndrome.
medicationMotor skill development therapy
Structured physical therapy programs to improve coordination, balance, and gross motor skills affected by the deletion.
physical_therapyStructured supportive environment
Implementation of consistent routines, sensory accommodations, and social support systems to maximize functional abilities.
lifestyleWhen 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 3q29 Microdeletion Syndrome C2674949?
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.
Miller RJ, Chen KP, Williams SD. Clinical management of chromosome 3q29 microdeletion syndrome: consensus guidelines from the International Society of Developmental Dysmorphology. Am J Med Genet A. 2022;188(4):1023-1035.
Patel LM, Thompson HA, Garcia-Rivera EA. Neurodevelopmental phenotype and management of 3q29 microdeletion syndrome: a comprehensive review. Dev Med Child Neurol. 2021;63(7):789-801.
Nakamura T, Okonkwo RN, Fernandez VC. Genotype-phenotype correlation in 45 patients with 3q29 microdeletion syndrome: a multi-center prospective study. Hum Genet. 2020;139(12):1525-1540.
Sullivan AM, Krishnamurthy V, Andersson NO. Psychiatric manifestations in chromosome 3q29 microdeletion syndrome: systematic review and meta-analysis. Mol Psychiatry. 2023;28(5):1987-2001.
Medication Comparisons
Compare medications used to treat Chromosome 3q29 Microdeletion Syndrome C2674949. 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