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Genomics Precision Diagnostic > Metabolic Precision Panel > Fatty Acid Oxidation Disorders Precision Panel

Fatty Acid Oxidation Disorders Precision Panel

Fatty Acid Oxidation Disorders (FAODs) are inborn errors of metabolism resulting in failure of mitochondrial beta-oxidation or the carnitine-based transport of fatty acids into the mitochondria.
Overview
Indication
Clinical Utility
Genes & Diseases
Methodology
References

Overview

  • Fatty Acid Oxidation Disorders (FAODs) are inborn errors of metabolism resulting in failure of mitochondrial beta-oxidation or the carnitine-based transport of fatty acids into the mitochondria. Fatty acid oxidation takes place in the mitochondria and provides a major source of energy, especially during prolonged fasting and sub-maximal exercise. FAODs lead to deficient energy production and produce a wide range of clinical presentations ranging from mild hypotonia in adults to sudden death in infants and symptoms usually arise or exacerbate during catabolic situations, such as fasting, illness and exercise. The most common FAOD is medium-chain acyl-CoA dehydrogenase deficiency (MCADD). Typically, they are inherited in an autosomal recessive pattern.  

  • The Igenomix Fatty Acid Oxidation Disorders Precision Panel can be used to make an accurate and directed diagnosis ultimately leading to a better management and prognosis of the disease. It provides a comprehensive analysis of the genes involved in this disease using next-generation sequencing (NGS) to fully understand the spectrum of relevant genes involved. 

Indication

  • The Igenomix Fatty Acid Oxidation Disorders Precision Panel is indicated for those patients with a clinical suspicion or diagnosis with or without the following manifestations during the newborn period: 
    • Hypoglycemia 
    • Hyperammonemia 
    • Liver disease and liver failure 
    • Cardiac and skeletal myopathy 
    • Rhabdomyolysis  
    • Retinal degeneration 

Clinical Utility

The clinical utility of this panel is: 

  • The genetic and molecular confirmation for an accurate clinical diagnosis of a symptomatic patient.  
  • Early initiation of multidisciplinary treatment including emergency protocols and safe fasting times to prevent metabolic decompensation, dietary management, substrate (anaplerotic) therapy, maintenance of constant energy supply during times of catabolism 
  • Risk assessment and genetic counselling of asymptomatic family members according to the mode of inheritance. 
  • Improvement of delineation of genotype-phenotype correlation. 

Genes & Diseases

Methodology

References

See scientific referrals

Rinaldo, P., Matern, D., & Bennett, M. (2002). Fatty Acid Oxidation Disorders. Annual Review Of Physiology, 64(1), 477-502. doi: 10.1146/annurev.physiol.64.082201.154705 

Knottnerus, S., Bleeker, J. C., Wüst, R., Ferdinandusse, S., IJlst, L., Wijburg, F. A., Wanders, R., Visser, G., & Houtkooper, R. H. (2018). Disorders of mitochondrial long-chain fatty acid oxidation and the carnitine shuttle. Reviews in endocrine & metabolic disorders, 19(1), 93–106. https://doi.org/10.1007/s11154-018-9448-1 

Wanders, R., Vaz, F. M., Waterham, H. R., & Ferdinandusse, S. (2020). Fatty Acid Oxidation in Peroxisomes: Enzymology, Metabolic Crosstalk with Other Organelles and Peroxisomal Disorders. Advances in experimental medicine and biology, 1299, 55–70. https://doi.org/10.1007/978-3-030-60204-8_5 

Rinaldo, P., Matern, D., & Bennett, M. J. (2002). Fatty acid oxidation disorders. Annual review of physiology, 64, 477–502. https://doi.org/10.1146/annurev.physiol.64.082201.154705 

Roe, C., & Mochel, F. (2006). Anaplerotic diet therapy in inherited metabolic disease: Therapeutic potential. Journal Of Inherited Metabolic Disease, 29(2-3), 332-340. doi: 10.1007/s10545-006-0290-3 

Olpin S. E. (2013). Pathophysiology of fatty acid oxidation disorders and resultant phenotypic variability. Journal of inherited metabolic disease, 36(4), 645–658. https://doi.org/10.1007/s10545-013-9611-5 

 

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