Genetic Testing in Clinical Movement Disorders: A Case-Based Review

Area of Science:

• Neurology
• Genetics
• Clinical Diagnostics

Background:

• Genetics plays a fundamental role in the pathophysiology of neurological disorders, particularly movement disorders.
• Clinical genetic testing has undergone significant advancements, increasing diagnostic yield but also presenting new challenges.
• Neurologists must navigate complex decisions regarding test selection, interpretation, and patient communication.

Approach:

• This review employs a case-based methodology to address key aspects of genetic testing relevant to neurologists.
• Specific focus is placed on genetic testing in Parkinson's disease.
• The review also covers the interpretation of inconclusive genetic reports and genetic testing for repeat expansion disorders, using Huntington disease as a model.

Key Points:

• Genetic testing offers a greater likelihood of etiological diagnosis for neurological conditions.
• Challenges include selecting the appropriate genetic test and interpreting complex results.
• Understanding genetic testing is essential for modern neurological practice.

Conclusions:

• Genetic testing is an indispensable tool in diagnosing and understanding neurological diseases.
• Effective interpretation and communication of genetic test results are critical for patient management.
• This review provides practical guidance for neurologists on utilizing genetic testing effectively.