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Related Experiment Videos

Variability of clinical presentation in fumarate hydratase deficiency.

O N Elpeleg1, N Amir, E Christensen

  • 1Metabolic Unit, Shaare-Zedek Medical Center, Jerusalem, Israel.

The Journal of Pediatrics
|November 1, 1992
PubMed
Summary

A rare genetic disorder caused a 5-year-old girl to excrete excess fumaric acid, leading to a diagnosis of fumarate hydratase deficiency. This highlights the need for organic acid analysis in diagnosing neurological conditions.

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Area of Science:

  • Biochemistry
  • Genetics
  • Neurology

Background:

  • Cerebral palsy and psychomotor retardation are complex neurological conditions.
  • Neurometabolic disorders present with diverse clinical manifestations.
  • Organic acid analysis is a key diagnostic tool for inborn errors of metabolism.

Observation:

  • A 5-year-old girl presented with cerebral palsy, psychomotor retardation, and hypotonia.
  • Excessive fumaric acid excretion was detected in her urine.
  • Skin fibroblast analysis revealed fumarate hydratase activity at 10% of control levels.

Findings:

  • The patient was diagnosed with fumarate hydratase deficiency, a rare metabolic disorder.
  • This condition results in the accumulation of fumaric acid due to impaired enzyme activity.

Related Experiment Videos

  • The genetic defect affects cellular energy metabolism.

    • Implications:

    • This case demonstrates the significant clinical heterogeneity of neurometabolic disorders.
    • Highlights the critical role of comprehensive organic acid analysis in diagnosing static encephalopathy.
    • Emphasizes the importance of considering enzyme deficiencies in unexplained neurological presentations.