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Related Experiment Videos

Genetic testing in Parkinson's disease.

Aideen McInerney-Leo1, Donald W Hadley, Katrina Gwinn-Hardy

  • 1Social and Behavioral Research Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland 20952, USA. amcinern@mail.nih.gov

Movement Disorders : Official Journal of the Movement Disorder Society
|October 27, 2004
PubMed
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Genetic factors play a role in Parkinson's disease (PD), a neurodegenerative disorder. Understanding genetic testing is crucial for physicians to guide patients and families through diagnosis and potential implications.

Area of Science:

  • Neurogenetics
  • Neurodegenerative Diseases

Background:

  • Parkinson's disease (PD) is a common adult-onset neurodegenerative disorder.
  • Historically considered idiopathic or environmentally triggered, familial cases with Mendelian inheritance patterns are increasingly recognized.
  • Four pathogenic genes (alpha-synuclein, parkin, DJ1, PINK1) and nine genetic loci have been identified.

Purpose of the Study:

  • To review current knowledge on the genetics of Parkinson's disease.
  • To inform physicians about the utility and implications of genetic testing for PD.
  • To discuss the social and emotional consequences of genetic testing for patients and families.

Main Methods:

  • Review of existing literature on Parkinson's disease genetics.
  • Discussion of genetic loci and pathogenic genes associated with PD.

Related Experiment Videos

  • Exploration of genetic testing models, using Huntington's disease as a reference.

    • Main Results:

    • Genetic alterations in identified genes can lead to recessive or dominant inheritance patterns in PD.
    • Age of onset for familial PD ranges from the second to the sixth decade.
    • Commercial genetic tests for parkin and alpha-synuclein mutations are available.

    Conclusions:

    • Physicians, especially neurologists, will increasingly encounter questions regarding PD genetic testing.
    • Awareness of when genetic testing is meaningful and its psychosocial impact is essential for patient care.
    • Genetic testing offers potential for diagnostic and presymptomatic insights in neurodegenerative disorders like PD.