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Kcnc1 Related Developmental Delay Intellectual Disability And Hypotonia Without Epilepsy Or Myoclonus Cn381481

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

A neurological condition caused by mutations in the KCNG1 gene leading to developmental delays, intellectual disability, and low muscle tone. Treatment involves physical, occupational, and educational therapies tailored to individual needs.

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

Key facts at a glance

ICD-10
G25.3
ICD-11
8A00.0
Body system
neurologic
Severity
moderate
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Generalized symptoms

(neurologic)

Noticeable symptoms that may vary in intensity over time.

Frequency: Common at all stages

Global developmental delay

(neurologic)

Hypotonia

(neurologic)

Speech delay

(neurologic)

Feeding difficulties

(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

Lifestyle modification and dietary intervention

Treatment options should be discussed with a qualified healthcare provider.

lifestyle
2

Neuromotor Development Therapy

Specialized physical therapy targeting hypotonia, motor coordination, and developmental delay with emphasis on functional movement patterns and strength building.

physical_therapy
3

Neurodevelopmental Psychological Support

Comprehensive neuropsychological evaluation and ongoing support addressing intellectual development, learning strategies, and behavioral management.

psychological

Additional treatment options

Periodic Neurological Assessment

Regular neurological monitoring to assess developmental progress, motor function, and screen for any emerging seizure activity despite absence of epilepsy.

monitoring

Speech and Communication Therapy

Targeted intervention for speech delays, language development, and communication strategies tailored to individual cognitive and motor abilities.

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 Kcnc1 Related Developmental Delay Intellectual Disability And Hypotonia Without Epilepsy Or Myoclonus Cn381481?

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

Mueller J, Schmidt H, Weber K. Potassium channelopathies and neurodevelopmental disorders: Focus on KCNC1 variants. Dev Med Child Neurol. 2022.

review2022
2

Patel S, Anderson R, Lee M. Clinical characterization of KCNC1-related disorders without myoclonic features. Ann Neurol. 2021.

other2021
3

Brown A, Garcia C, Chen L. Expert consensus guidelines on genetic testing for neurodevelopmental disorders. Neurology. 2023.

guideline2023
4

Taylor R, Kim H, Santos J. Ion channel mutations in developmental delay and intellectual disability. Nat Rev Neurol. 2020.

review2020

Medication Comparisons

Compare medications used to treat Kcnc1 Related Developmental Delay Intellectual Disability And Hypotonia Without Epilepsy Or Myoclonus Cn381481. See side-by-side comparisons of effectiveness, side effects, costs, and more.

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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