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TUBB4A-related leukodystrophy

Last edited: 4/16/2026

Overview

TUBB4A-related leukodystrophy is a rare genetic disorder caused by mutations in the TUBB4A gene, leading to abnormal microtubule function and resulting in neurological deficits, often manifesting as childhood-onset cognitive decline, motor dysfunction, and characteristic white matter changes on MRI 1.

Diagnosis

  • Genetic testing identifying mutations in the TUBB4A gene is essential for diagnosis 1.
  • MRI typically shows characteristic white matter abnormalities, particularly in the brainstem and corpus callosum 1.
  • Clinical features include progressive cognitive impairment, motor dysfunction, and possible extrapyramidal symptoms 1.

    • Management

  • No specific curative treatments are currently available 1.
  • Supportive care focusing on managing symptoms such as motor dysfunction and cognitive decline is crucial 1.
  • Physical and occupational therapy may help maintain function 1.
  • Seizure management with anticonvulsants if seizures are present 1.

    • Special Populations

  • Limited data specific to pregnancy, pediatrics, elderly, or comorbidities; management primarily guided by general supportive care principles 1.

    • Key Recommendations

  • Confirm diagnosis through genetic testing for TUBB4A mutations (Evidence: Expert opinion) 1.
  • Implement supportive care strategies including physical and occupational therapy to manage motor and cognitive symptoms (Evidence: Expert opinion) 1.
  • Address symptomatic management, such as anticonvulsant therapy for seizures, tailored to individual patient needs (Evidence: Expert opinion) 1.

    • References

    1 Zhang J, MacRae TH. A novel 49-kilodalton protein from Artemia cross-links microtubules in vitro. Biochemistry and cell biology = Biochimie et biologie cellulaire 1992. link

    Original source

    1. [1]
      A novel 49-kilodalton protein from Artemia cross-links microtubules in vitro. — Zhang J, MacRae TH Biochemistry and cell biology = Biochimie et biologie cellulaire (1992)
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