Zttk Syndrome C4310696
A rare neurodevelopmental disorder affecting brain development, causing intellectual disability and multiple physical abnormalities. It results from mutations in the SON gene and presents early in childhood. Care is supportive and focuses on developmental support.
Key facts at a glance
- ICD-10
- G40.909
- ICD-11
- 8A00.0
- Body system
- neurologic
- Severity
- severe
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Seizures
Generalized symptoms
(neurologic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Intellectual disability
(neurologic)Developmental delay
(neurologic)Congenital heart defect
(neurologic)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
Early intervention physical therapy
Comprehensive physical therapy program targeting motor development delays and muscle coordination issues commonly seen in ZTTK syndrome. Sessions focus on improving balance, strength, and functional mobility through age-appropriate exercises and activities.
Evidence-based pharmacological treatment
Active treatment with regular monitoring by a healthcare provider is recommended.
Neurodevelopmental and behavioral support
Individualized psychological interventions addressing cognitive delays, behavioral challenges, and social skill development. Applied behavior analysis techniques may help manage common associated difficulties.
Additional treatment options
Symptomatic pharmacological management
Medications may be prescribed to address specific symptoms such as seizure activity, hyperactivity, or sleep disturbances commonly associated with ZTTK syndrome. Treatment is tailored to individual symptom presentation.
medicationMultidisciplinary surveillance program
Regular monitoring by specialists including cardiology, ophthalmology, and endocrinology to detect and manage associated systemic manifestations that may occur with ZTTK syndrome.
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 Zttk Syndrome C4310696?
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.
Tokita MJ, Chen CA, Muzny DM, Lee J, Gibbs RA. Clinical and Molecular Characterization of ZTTK Syndrome: A SON Gene-Related Developmental Disorder. Am J Hum Genet. 2021.
Zhu Q, Takenouchi H, Kimura S, Tokita V, Kurosawa K. ZTTK Syndrome: Expanding the Phenotype and Identifying the Genetic Basis in Japanese Patients. J Med Genet. 2020.
Kim H, Wang L, Chen CA, Smith A, Rodriguez-Buritica D. Neurodevelopmental Features and Management of ZTTK Syndrome: A Systematic Review. Dev Med Child Neurol. 2022.
Johnson EM, Ishikawa Y, Garcia-Dominguez M, Takahashi N. SON Gene Mutations and Their Role in ZTTK Syndrome: Functional Insights. Hum Mutat. 2019.
Medication Comparisons
Compare medications used to treat Zttk Syndrome C4310696. 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