Abstract Details

Title Seizure Freedom After Failure of Levetiracetam vs. Sodium Channel Blocker

Topic Epilepsy/Clinical Neurophysiology (EEG)

Presentation(s) S29 - Epilepsy Diagnostics and Therapeutics (1:12 PM-1:24 PM)

Poster/Presentation
Number 002

Background

Since approval of levetiracetam as mono-therapy, prescription has considerably increased because of its efficacy and tolerability. Human Epilepsy Project (HEP) 1 is an observational, prospective, multi-center study that enrolled patients with newly treated focal epilepsy. The data collected included seizure frequency and anti-seizure medication (ASM) information.

Objective

To evaluate rate of seizure freedom in people with newly treated focal epilepsy after addition or switch to a sodium channel modulator after failing initial mono-therapy with levetiracetam due to efficacy and vice versa.

Design/Methods

Seizure frequency was collected pre and post treatment. Seizure counts were obtained from patient diaries and medical records. Failure of a medication was defined as having greater than or equal to one seizure on an adequate dose of a given medication. Participants were considered seizure free if they had no seizures for at least 6 months at time of last follow up. Participants were grouped into two cohorts; 1) those that became seizure free after addition/switch to a sodium channel modulator after failing levetiracetam as initial mono-therapy and 2) those that became seizure free after addition/switch to levetiracetam after failing a sodium channel modulator as initial mono-therapy.

Results

Of the 448 participants with ASM data, 70.5% (n=316) of participants were seizure free for 6 months at last follow up. 13% (41/316) of those that were 6 months seizure free were in group 1, whereas only 3.8% (12/316) were in group 2.

Conclusions

A greater percentage of patients achieved seizure freedom after failing levetiracetam due to efficacy with the addition or transition to a sodium channel modulator over the converse. While levetiracetam is commonly prescribed as initial therapy, failure at adequate doses of any first mono-therapy should lead to early consideration of alternative treatments.

Authors/Disclosures
Alexandra Chaves PRESENTER	Miss Chaves has nothing to disclose.
Ojas Potnis	Mr. Potnis has nothing to disclose.
Sarah Barnard	Sarah Barnard has nothing to disclose.
John Gledhill (Cognizance Biomarkers)	No disclosure on file
Jacqueline French, MD, FAAN (NYU Comprehensive Epilepsy Ctr)	Dr. French has received personal compensation in the range of $50,000-$99,999 for serving as an officer or member of the Board of Directors for Epilepsy Foundation. The institution of Dr. French has received research support from Epilepsy Study Consortium/ Epilepsy Foundation (Funded by UCB). The institution of Dr. French has received research support from GW/One8 Foundation/FACES. The institution of Dr. French has received research support from NINDS. The institution of Dr. French has received research support from Xenon. The institution of Dr. French has received research support from Cerevel. The institution of Dr. French has received research support from FACES. The institution of Dr. French has received research support from UCB. The institution of Dr. French has received research support from Epilepsy Study Consortium. The institution of Dr. French has received research support from UCB. Dr. French has received personal compensation in the range of $100,000-$499,999 for serving as a Chief Medical/Innovation Officer with Epilepsy Foundation. Dr. French has a non-compensated relationship as a Consultant with Angelini that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a consultant with Alterity Therapeutics Limited that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a consultant with Bright minds Biosciences that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Cerecin Inc that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Cognizance Biomarkers that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Arvelle that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a consultant with Beacon biosignals that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant, Advisory Board with Biohaven Pharmaceuticals that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Bloom Science Inc that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with BridgeBio Pharma Inc that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a consultant, scientific advisory board with Camp4 Therapeutics Corporation that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant, Scientific Advisory Board with Cerebral Therapeutics that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Cerevel that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a SAB with Coda Biotherapeutics that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Genentech Inc that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Crossject that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Eisai, that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Eliem Therapeutics that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Encoded Therapeutics that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with iQure Pharma that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant, SAB with Engrail that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a SAB with Epihunter that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a SAB with Epiminder that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Epitel Inc that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Equilibre BioPharmaceuticals that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a consultant with Greenwich Biosciences that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Grin Therapeutics that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with GW Pharma that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Janssen Pharmaceutica that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a consultant with Jazz Pharmaceuticals that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Knopp Biosciences that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Lipocine that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with LivaNova that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Longboard Pharmaceuticals that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant, SAB with Lundbeck that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant, SAB with Marinus that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a consultant with Modulight Bio that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Leal therapeutics that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Neumirna Therapeutics that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant,SAB with Neurocrine that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Neuroelectrics USA Corporation that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Neuronetics Inc that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Ono Pharmaceutical Co that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant, SAB with Otsuka Pharmaceutical Development that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant, SAB with Ovid Therapeutics Inc that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Paladin Labs Inc that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Rapport Therapeutics that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Praxis that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with PureTech LTY Inc that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a consultant with SK Life Sciences that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Stoke that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Supernus that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a consultant with Takeda that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant, SAB with UCB Inc that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Ventus Therapeutics that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a consulting, steering committee with Xenon that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a consultant with Korro Bio Inc that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with NeuroPro Therapeutics that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Advisory board with Receptor that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Advisory board with Sage Therpeutics that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Advisory Board with Third Rock Ventures that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consultant with Vida Ventures Management that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consulting with Pfizer that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consulting with Agrithera, Inc that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a consulting with Autifony therapeutics, Unlimited that is relevant to AAN interests or activities. Dr. French has a non-compensated relationship as a Consulting with Baergic Bio that is relevant to AAN interests or activities.
Manisha G. Holmes, MD (Westchester Medical Center)	Dr. Holmes has nothing to disclose.