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Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
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Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.
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Genetic diseases mimicking multiple sclerosis.

Chueh Lin Hsu1, Piotr Iwanowski1, Chueh Hsuan Hsu2

  • 1Department of Neurology, Poznan University of Medical Sciences, Poznan, Poland.

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|June 21, 2021
PubMed
Summary
This summary is machine-generated.

Genetic diseases like CADASIL and leukodystrophies can mimic multiple sclerosis (MS), leading to misdiagnosis. Early identification of these MS mimics is crucial to prevent severe neurological complications in patients.

Keywords:
Genetic diseasesleukodystrophiesmitochondrial dysfunctionsmultiple sclerosismultiple sclerosis- mimicsneurodegenerative disorders

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Area of Science:

  • Neuroimmunology
  • Neurogenetics
  • Neurology

Background:

  • Multiple sclerosis (MS) is an inflammatory neurodegenerative disease characterized by progressive neurological dysfunction.
  • Relapsing-remitting disease courses are common in MS patients.
  • Overlapping clinical and radiological features can lead to misdiagnosis of MS.

Purpose of the Study:

  • To discuss genetic diseases that mimic multiple sclerosis (MS).
  • To highlight clinical identification strategies for MS mimics.
  • To provide practicing pearls for physicians to recognize genetically based MS mimics.

Main Methods:

  • Review of clinical and radiological features of MS.
  • Analysis of genetic diseases with overlapping presentations with MS, such as CADASIL and leukodystrophies.
  • Discussion of diagnostic challenges and potential pitfalls.

Main Results:

  • Genetic disorders can present with symptoms similar to MS.
  • Delayed diagnosis of these genetic mimics can result in significant neurological sequelae.
  • Specific clinical and genetic markers can aid in differentiating MS from its mimics.

Conclusions:

  • Genetic diseases pose a diagnostic challenge in neurology due to their mimicry of MS.
  • Awareness and targeted diagnostic approaches are essential for accurate identification of MS mimics.
  • Timely diagnosis of genetic mimics can improve patient outcomes and prevent complications.