Comparative Effectiveness of Palliative Surgery Versus Additional Anti-Seizure Medications for Lennox-Gastaut Syndrome

Lennox-Gastaut syndrome is a serious and rare form of epilepsy that begins in infancy and early childhood. Seizures and their consequences need medical attention, emergency encounters, and hospitalizations. Seizures disrupt home life for the patient and for family. Lennox-Gastaut syndrome is typically accompanied by disabilities in motor, communication, eating, and other skills needed for daily function. Lennox-Gastaut syndrome (LGS) has no cure. Although current treatments may help reduce the number of seizures, none are expected to eliminate them entirely; these treatments are palliative. The main treatments include anti-seizure medications and some surgical approaches, including the implantation of a vagus nerve stimulator (a pacemaker-like generator implanted in the chest wall and programmed by a physician to stimulate the vagus nerve in the neck) and corpus callosotomy (cutting through the band of fibers that connect the two sides of the brain). While both types of treatment (medications and surgeries) produce some benefit by reducing how often the seizures occur, both also have some risks. All medications can, in some patients, produce moderate to severe side effects. This is true of anti-seizure medications. Most patients with LGS take several anti-seizure medications at a time. Surgeries can also have associated risks and is additionally stressful for parents and family members. Currently, there is no strong evidence to support parents and physicians in deciding which type of treatment (more medicines or surgery) will be most successful for a child with LGS, and whether one or the other approach may lessen the toll that seizures take on a child's development and ability to function. This study has two components. It will engage a network of seven pediatric hospitals in the United States where children with Lennox-Gastaut syndrome are cared for and determine whether seizure-related emergency department visits and hospitalizations are more likely to be reduced following the use of additional medications or adding palliative surgery to existing medications. The investigators will determine whether medical versus surgical treatment is more likely to lessen some of the developmental and functional difficulties that affect patients with LGS. The study will also determine whether starting therapies at a younger versus older age makes a difference. The second component of the study will provide a description of the use of surgical versus medical treatment approaches across 18 pediatric hospitals in the United States (seven plus 11 centers). The investigators will describe how treatments differ across hospitals and over time. The results from this study will help parents and providers make more informed choices about treatment for children with Lennox-Gastaut syndrome and will highlight areas for improvement in providing the best possible health care for this severe, lifelong disorder.

NCT Number	NCT05374824
Lead Sponsor	Ann & Robert H Lurie Children's Hospital of Chicago Collaborators: Patient-Centered Outcomes Research Institute, Nationwide Children's Hospital, University of Colorado, Denver, University of Michigan, University of Pittsburgh, Seattle Children's Hospital, St. Louis Children's Hospital, University of Cincinnati, Nemours Children's Health System, Stanford University, Monroe Carell Jr. Children's Hospital at Vanderbilt, University of North Carolina, Duke University, Indiana University, Johns Hopkins University, Nicklaus Children's Hospital f/k/a Miami Children's Hospital
Conditions	Lennox Gastaut Syndrome
Enrollment	4,680 participants
Start Date	2022-04-01
Primary Completion	2026-12-31 (estimated)
Study Completion	2026-12-31 (estimated)
Updated on ClinicalTrials.gov	2026-08-06