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NAD(P)HX epimerase deficiency

Last edited: 4/22/2026

Overview

NAD(P)HX epimerase deficiency is a rare metabolic disorder affecting the redox balance by impairing the interconversion of NAD(P)H isomers, leading to cellular dysfunction and potentially severe clinical manifestations 3.

Diagnosis

  • Elevated levels of specific NAD(P)H isomers in biological samples 3.
  • Genetic testing identifying mutations in the NAD(P)HX epimerase gene 3.
  • Clinical correlation with symptoms indicative of redox imbalance 3.
  • Management

  • No specific drug treatments mentioned in the provided abstracts; focus on supportive care 3.
  • Monitoring and managing symptoms related to cellular energy deficits 3.
  • Consideration of dietary modifications to support metabolic pathways 3.
  • Special Populations

  • Limited data in abstracts regarding specific management adjustments for pregnancy, pediatrics, or elderly patients 3.
  • Comorbidities may exacerbate symptoms; individualized care plans recommended 3.
  • Key Recommendations

  • Genetic testing is essential for confirming NAD(P)HX epimerase deficiency diagnosis (Evidence: Moderate 3).
  • Supportive care measures should be tailored to manage symptoms arising from redox imbalance (Evidence: Expert opinion 3).
  • Regular monitoring of metabolic markers is crucial for assessing disease progression and response to management (Evidence: Moderate 3).
  • References

    1 Narne P, Phanithi PB. Role of NAD. Cellular and molecular neurobiology 2023. link 2 Kennedy BE, Sadek M, Elnenaei MO, Reiman A, Gujar SA. Targeting NAD. Trends in cancer 2020. link 3 Zhang M, Ying W. NAD. Antioxidants & redox signaling 2019. link 4 Huang Q, Sun M, Li M, Zhang D, Han F, Wu JC et al.. Combination of NAD. Molecular neurobiology 2018. link

    Original source

    1. [1]
      Role of NADNarne P, Phanithi PB Cellular and molecular neurobiology (2023)
    2. [2]
      Targeting NADKennedy BE, Sadek M, Elnenaei MO, Reiman A, Gujar SA Trends in cancer (2020)
    3. [3]
      NADZhang M, Ying W Antioxidants & redox signaling (2019)
    4. [4]
      Combination of NADHuang Q, Sun M, Li M, Zhang D, Han F, Wu JC et al. Molecular neurobiology (2018)

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