Skip to content

Joubert Syndrome 1 C4551568

Published: July 22, 2026Updated: August 25, 2026

A genetic subtype of Joubert syndrome caused by mutations in specific genes. It shares features with other subtypes including developmental delays and coordination difficulties. Management focuses on supportive care and addressing individual symptoms.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 25, 2026Editorial policy

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

!

Abnormal breathing patterns

Generalized symptoms

(neurologic)

Significant symptoms that substantially affect daily functioning.

Frequency: Common at all stages

Hypotonia

(neurologic)

Intellectual disability

(neurologic)

Polydactyly

(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

Drug therapy and clinical monitoring

Active treatment with regular monitoring by a healthcare provider is recommended.

medication
2

Early intervention physical therapy

Comprehensive early childhood physical therapy program designed for Joubert syndrome type 1 focusing on improving muscle tone, balance, and motor coordination through play-based activities. Treatment emphasizes functional goals relevant to developmental stage.

physical_therapy
3

Multisystem monitoring program

Coordinated care across specialties including neurology, nephrology, ophthalmology, and hepatology to monitor and manage multisystem manifestations of Joubert syndrome. Regular screening for kidney disease, liver abnormalities, and eye abnormalities.

monitoring

Additional treatment options

Hypotonia management

Pharmacological and non-pharmacological approaches to managing severe hypotonia that affects motor development and functional abilities. Treatment may include medications that improve muscle tone along with supportive therapies.

medication

Strabismus and eye surgery

Surgical intervention for eye movement abnormalities including strabismus and nystagmus that commonly affect patients with Joubert syndrome. Pre-operative assessment determines the most appropriate surgical approach for each patient.

procedure

Nutrition and hydration support

Individualized nutrition planning addressing feeding difficulties, metabolic needs, and weight management. Dietary modifications may include texture-modified foods, thickened liquids, and supplementation for patients with absorption issues or failure to thrive.

dietary

When 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.

Q

What is Joubert Syndrome 1 C4551568?

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

general

Medication Comparisons

Compare medications used to treat Joubert Syndrome 1 C4551568. 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 25, 2026. · Read our editorial policy