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Phytanic acid alpha-oxidase deficiency (Refsum disease) presenting in infancy
1Hospital for Sick Children, London, UK.
Journal of Inherited Metabolic Disease
|January 1, 1994
Summary
This case study details a patient with early-onset classical Refsum disease, a phytanic acid alpha-oxidase deficiency. Diagnostic exclusion of other peroxisomal disorders confirmed the specific diagnosis.
Area of Science:
- Biochemistry
- Genetics
- Pediatric Neurology
Background:
- Classical Refsum disease is a rare inherited metabolic disorder.
- Phytanic acid alpha-oxidase deficiency leads to phytanic acid accumulation.
- Early diagnosis is crucial for managing neurological symptoms.
Observation:
- A patient presented with hypotonia and developmental delay at 7 months.
- High serum phytanic acid concentration was detected.
- Exclusionary tests ruled out infantile Refsum disease and other generalized peroxisomal disorders.
Findings:
- The patient was diagnosed with classical Refsum disease.
- The early onset (by 7 months) is atypical for this condition.
- Analysis confirmed phytanic acid alpha-oxidase deficiency.
Implications:
- This case highlights the potential for unusually early presentation of classical Refsum disease.
- In utero phytanate exposure is considered as a possible factor for the early onset.
- Further research into early-onset Refsum disease and prenatal factors is warranted.