Examining Epilepsy in Angelman Syndrome: Insights From Caregiver-Reported Data in the Linking Angelman and Dup15q...

Area of Science:

• Neurology
• Genetics
• Rare Diseases

Background:

• Epilepsy is a significant challenge in Angelman syndrome (AS), impacting patient well-being and caregiver burden.
• This study offers current insights into seizure patterns, triggers, and treatments in AS, based on caregiver reports.

Purpose of the Study:

• To provide updated caregiver-reported data on seizure characteristics, triggers, and management strategies in Angelman syndrome.
• To compare seizure data between deletion and nondeletion molecular subtypes of AS.

Main Methods:

• An online questionnaire was administered to caregivers of 130 individuals with AS.
• Data collected included seizure details, age at first seizure/diagnosis, perceived triggers, and management approaches.
• Participants were categorized by molecular subtype (deletion vs. nondeletion) for comparative analysis.

Main Results:

• Seizures were more prevalent in AS deletion subtypes compared to nondeletion subtypes.
• While common seizure manifestations were similar, deletion subtypes had earlier epilepsy diagnoses.
• Illness/fever was the most identified trigger; levetiracetam was the most common medication, with side effects leading to discontinuation. Access to rescue medication was limited.

Conclusions:

• Caregiver reports offer valuable insights into seizure characteristics in AS.
• Gaps in identifying seizure triggers and limited access to or use of rescue medications indicate areas for improving the standard of care in AS.