Genetic Testing Approaches in Dravet Syndrome

This episode, titled “Genetic Testing Approaches in Dravet Syndrome,” features panelists discussing the rapidly evolving landscape of genetic testing and how clinicians can navigate the growing number of testing options available for patients with suspected Dravet syndrome. The panel reviews the evolution of genetic testing technologies, from chromosome analysis and single-gene sequencing to modern next-generation sequencing approaches, including epilepsy gene panels, whole-exome sequencing, and whole-genome sequencing. Expert faculty explain how advances in genomic medicine have transformed the evaluation of epilepsy, allowing clinicians to assess thousands of genes simultaneously and improve diagnostic yield for genetic epilepsies.

The discussion focuses on the practical considerations involved in selecting the most appropriate testing strategy. Faculty compare the advantages and limitations of gene panels, exome sequencing, and genome sequencing, highlighting factors such as diagnostic yield, accessibility, turnaround time, cost, and the ability to detect complex or previously unrecognized genetic variants. The panel also reviews the role of trio testing, the value of parental samples in variant interpretation, and situations in which broader genomic approaches may provide important clinical information beyond a targeted epilepsy panel.

Throughout the conversation, expert faculty emphasize that while whole-exome and whole-genome sequencing are increasingly becoming the preferred approaches, targeted epilepsy panels remain valuable tools in many clinical settings. The panel also explores situations in which additional testing may be warranted despite negative initial results, underscoring the importance of continued clinical suspicion and ongoing advances in genetic testing technologies for Dravet syndrome and other genetic epilepsies.

In the next episode, “Navigating Unresolved Genetic Findings in Dravet Syndrome,” panelists will discuss why a negative genetic test result does not necessarily exclude a genetic diagnosis and discuss current recommendations for ongoing evaluation. The expert faculty highlight the role of genetic reanalysis, emerging testing technologies, and referral to specialized centers in helping resolve complex or previously undiagnosed cases.