Neurologic phenotypes associated with acanthocytosis
R H Walker1, H H Jung, C Dobson-Stone
1Department of Neurology, James J. Peters Veterans Affairs Medical Center, Bronx, NY 10468, USA. ruth.walker@mssm.edu
Insights
Neuroacanthocytosis encompasses various disorders, including chorea-acanthocytosis and McLeod syndrome. Genetic testing aids in distinguishing these conditions for better management and future treatments.
Area of Science:
- Neurology
- Genetics
- Hematology
Background:
- Neuroacanthocytosis typically refers to chorea-acanthocytosis and McLeod syndrome.
- Other conditions like Huntington disease-like 2 and pantothenate kinase-associated neurodegeneration also exhibit erythrocyte acanthocytosis.
- Distinct neuroacanthocytosis syndromes, such as Bassen-Kornzweig disease, involve ataxia due to lipoprotein disorders without movement issues.
Purpose of the Study:
- To highlight the spectrum of disorders associated with neuroacanthocytosis.
- To emphasize the role of genetic testing in differentiating these conditions.
- To underscore the importance of accurate diagnosis for genetic counseling, complication monitoring, and therapeutic development.
Main Methods:
- Review of existing literature and clinical data on neuroacanthocytosis syndromes.
- Analysis of phenotypic similarities and differences among related disorders.
- Discussion of the impact of genetic testing advancements.
Main Results:
- Genetic testing allows for precise differentiation between various neuroacanthocytosis disorders, despite phenotypic overlap.
- Accurate diagnosis is crucial for effective patient management and genetic counseling.
- Animal models are being explored for developing targeted therapies for neurodegenerative conditions.
Conclusions:
- Neuroacanthocytosis is a broader category than initially defined, encompassing diverse neurological and hematological conditions.
- Advancements in genetic testing are pivotal for accurate diagnosis and personalized patient care.
- Future therapeutic strategies for neuroacanthocytosis may benefit from insights gained from animal models.
Abstract:
The term "neuroacanthocytosis" is normally used to refer to autosomal recessive chorea-acanthocytosis and X-linked McLeod syndrome, but there are other movement disorders in which erythrocyte acanthocytosis may also be seen, such as Huntington disease-like 2 and pantothenate kinase-associated neurodegeneration. Disorders of serum lipoproteins such as Bassen-Kornzweig disease form a distinct group of neuroacanthocytosis syndromes in which ataxia is observed, but movement disorders are not seen. Genetic testing has enabled us to distinguish between these disorders, even when there are considerable similarities between phenotypes. Improved detection is important for accurate genetic counseling, for monitoring for complications, and, it is hoped, for implementing causal treatments, once these become available. As in other neurodegenerative conditions, animal models are a promising strategy for the development of such therapies.
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