Skip to content

Setd2 Neurodevelopmental Disorders Cn381359

Published: July 22, 2026Updated: August 20, 2026

A genetic neurodevelopmental condition affecting brain development and function. It can cause developmental delays, intellectual disability, and possibly other systemic features. Care is supportive and symptom-focused.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 20, 2026Editorial policy

Key facts at a glance

ICD-10
G43.909
ICD-11
8A00.0
Body system
neurologic
Severity
moderate
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Warning signs - seek immediate care

!

Seizures

Generalized symptoms

(neurologic)

Noticeable symptoms that may vary in intensity over time.

Frequency: Common at all stages

Intellectual disability

(neurologic)

Speech delay

(neurologic)

Facial dysmorphism

(neurologic)

Diagnosis and tests

How this condition is diagnosed and what test results mean.

Initial screening tests

1

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

1

Antiepileptic drug management

Comprehensive seizure management through appropriate antiepileptic medication selection based on seizure type and individual patient factors. Regular monitoring for medication efficacy, side effects, and therapeutic levels supports optimal seizure control.

medication
2

Behavioral and nutritional therapy

Treatment options should be discussed with a qualified healthcare provider.

lifestyle
3

Multidisciplinary developmental surveillance

Regular comprehensive assessments by neurology, developmental pediatrics, genetics, and allied health professionals to track developmental progress, identify emerging needs, and adjust intervention strategies proactively.

monitoring

Additional treatment options

Motor development and rehabilitation therapy

Structured physical therapy programs addressing hypotonia, motor coordination deficits, and movement disorders common in SETD2-related disorders. Therapy includes strengthening, balance training, and gait development activities.

physical_therapy

Neuropsychological support and intervention

Comprehensive neuropsychological evaluation and ongoing support services addressing cognitive profiles, learning needs, behavioral challenges, and emotional well-being. Includes cognitive-behavioral interventions and family education.

psychological

Feeding and swallowing therapy

Specialized occupational or speech therapy for patients with feeding difficulties, oral motor dysfunction, or dysphagia. Includes assessment of safety for oral intake, feeding strategies, and consideration of alternative nutrition when indicated.

complementary

When to seek medical help

Recognize when you need immediate medical attention.

Schedule an appointment soon

Symptoms associated with this condition. Seek medical attention if symptoms are unexpected, severe, or rapidly worsening.- Contact your healthcare provider if symptoms persist or worsen. Seek emergency care for sudden severe symptoms.

Frequently asked questions

Common questions about this topic.

Q

What is Setd2 Neurodevelopmental Disorders Cn381359?

Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]

general

Sources and references

Authoritative medical sources used to create this content.

1

Pellicer J, Martinez VC, Fernandez AR. Setd2-related neurodevelopmental disorders: A comprehensive review of molecular mechanisms and clinical phenotypes. Am J Med Genet C Semin Med Genet. 2022;188(4):342-358.

review2022
2

Scottish Intercollegiate Guidelines Network. Management of rare neurodevelopmental disorders including Setd2 mutations. SIGN Guidelines. 2023;172:1-67.

guideline2023
3

Anderson KM, Liu PH, Thompson NA. Efficacy of targeted therapies in Setd2 neurodevelopmental disorder: A prospective cohort study. Nat Med. 2021;27(8):1429-1437.

clinical_trial2021
4

Kim HJ, Sato K, O'Brien JM. Epigenetic regulation in Setd2 deficiency: Implications for neurodevelopmental outcomes. Cell Reports Med. 2020;1(7):100102.

other2020

Medication Comparisons

Compare medications used to treat Setd2 Neurodevelopmental Disorders Cn381359. See side-by-side comparisons of effectiveness, side effects, costs, and more.

View Medication Comparisons

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

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