Peroxisomal acyl-CoA-oxidase deficiency: two new cases
Rosalba Carrozzo1, Carlo Bellini, Simona Lucioli
1Unit of Molecular Medicine, Bambino Gesù Children's Hospital, Rome, Italy.
American Journal of Medical Genetics. Part A
|June 7, 2008
Summary
This study identifies two new patients with straight-chain acyl-coenzyme A oxidase deficiency (ACOX1). Genetic analysis revealed distinct mutations causing this peroxisomal disorder, impacting very-long-chain fatty acid metabolism.
Area of Science:
- Biochemistry
- Genetics
- Peroxisomal Disorders
Background:
- Straight-chain acyl-coenzyme A oxidase (ACOX1) is crucial for peroxisomal fatty acid oxidation.
- Deficiencies in ACOX1 lead to peroxisomal disorders with severe neurological symptoms.
Observation:
- Two pediatric patients presented with early-onset hypotonia, seizures, and psychomotor delay.
- Abnormal plasma very-long-chain fatty acids were detected, while other metabolic markers remained normal.
Findings:
- Fibroblast studies confirmed a deficiency in straight-chain acyl-CoA oxidase (ACOX1).
- Molecular analysis identified a homozygous deletion in ACOX1 in the first patient.
- The second patient had compound heterozygous mutations in ACOX1, including a missense mutation and exon skipping.
Implications:
- These findings expand the known mutation spectrum for ACOX1 deficiency.
- Understanding the genetic basis is vital for diagnosis and potential therapeutic strategies in peroxisomal disorders.
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