Genetic updates on paroxysmal dyskinesias.

Area of Science:

• Genetics
• Neurology
• Movement Disorders

Background:

• Paroxysmal dyskinesias are a heterogeneous group of genetic disorders characterized by episodic involuntary movements.
• Recent genetic sequencing advances have identified numerous associated gene variants, highlighting genotype-phenotype overlap, incomplete penetrance, and variability.
• Paroxysmal dyskinesia can be the initial presenting symptom of various genetic conditions.

Purpose of the Study:

• To review the 34 genes implicated in paroxysmal dyskinesias to date.
• To propose a diagnostic workflow utilizing whole-exome or whole-genome sequencing.
• To foster a unified understanding for effective collaboration in diagnosis and treatment.

Main Methods:

• Comprehensive literature review of genetic disorders causing paroxysmal dyskinesias.
• Analysis of current genetic sequencing technologies and their application.
• Development of a proposed diagnostic algorithm.

Main Results:

• Identification and discussion of 34 genes associated with paroxysmal dyskinesias.
• Emphasis on the complexity of genetic underpinnings, including variable penetrance and phenotypic expression.
• Highlighting the diagnostic utility of advanced genetic sequencing.

Conclusions:

• Genetic sequencing is crucial for diagnosing paroxysmal dyskinesias.
• A standardized diagnostic approach is needed for improved patient care.
• Enhanced collaboration between researchers and clinicians is essential for advancing the field.