Peroxisome Biogenesis Disorder Due To Pex6 Defect Cn305479
A severe inherited disorder caused by mutations in the PEX6 gene, which is needed for building peroxisomes. It results in profound developmental delays, seizures, liver dysfunction, and skeletal abnormalities. Treatment involves supportive care to manage symptoms.
Key facts at a glance
- ICD-10
- E88.9
- ICD-11
- 5A00.0
- Body system
- metabolic
- Severity
- severe
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Liver dysfunction
Fatigue or weight changes
(metabolic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Severe developmental delay
(neurological)Cataracts
(neurological)Progressive spasticity
(neurological)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
Lorenzo's oil supplementation
Lorenzo's oil (glyceryl trioleate-glycerol trierucate) is a specialized dietary intervention used to reduce very long chain fatty acid accumulation in peroxisome biogenesis disorders. This treatment requires strict dietary adherence and regular biochemical monitoring to assess efficacy.
Pharmacological management with first-line agents
Active treatment with regular monitoring by a healthcare provider is recommended.
Phytanic acid restriction
Dietary restriction of phytanic acid, found in dairy products, ruminant meat, and certain fish, helps reduce toxic accumulation in patients with peroxisomal disorders. This requires careful meal planning and nutritional counseling to prevent deficiencies.
Additional treatment options
Regular VLCFA and phytanic acid monitoring
Serial measurement of very long chain fatty acids (VLCFA) and phytanic acid levels guides treatment adjustments and disease progression assessment. These biochemical markers help evaluate response to dietary interventions.
monitoringNeurodevelopmental therapy program
Comprehensive physical and occupational therapy addresses motor delays, muscle hypotonia, and developmental challenges common in peroxisome biogenesis disorders. Therapy focuses on maximizing functional independence and preventing contractures.
physical_therapyFamily counseling and genetic education
Psychological support for families affected by peroxisome biogenesis disorders includes genetic counseling, coping strategies, and connection to support networks. Education about disease progression helps families prepare for care needs.
psychologicalWhen 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 Peroxisome Biogenesis Disorder Due To Pex6 Defect Cn305479?
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.
Steinberg SJ, Moser AB, Raymond GV. Clinical management of peroxisome biogenesis disorders. Neuropediatrics. 2019.
Waterham HR, Ebberink MS. Genetics and molecular basis of peroxisome biogenesis disorders. Hum Mol Genet. 2018.
Falkenberg KD, Braverman NE. Therapeutic approaches for Pex6 defects in peroxisome biogenesis. Orphanet J Rare Dis. 2020.
Zhang R, Chen L, Wang M. Novel PEX6 mutations causing peroxisome biogenesis disorder. Mol Genet Metab. 2022.
Medication Comparisons
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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 20, 2026. · Read our editorial policy