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Clinical Trials in Sweden / NCT07281027
Starting soon Phase 3

COMparison Between Anakinra and Tocilizumab in NORSE - "COMBAT-NORSE"

NCT07281027 · tracked via the Priya Life Science Sweden tracker
Phase
Phase 3
Started
2026-12-01
Last updated
2026-08-19

Condition(s) studied

New Onset Refractory Status EpilepticusNew-Onset Refractory Status EpilepticusFebrile Infection-Related Epilepsy Syndrome (FIRES)

Investigational drug(s) / intervention(s)

Anakinra →Tocilizumab →Standard medical treatment

Anakinra: SOC will be followed , Suggested Dose: 10 mg/kg/day IV, divided into 4 daily doses (q6h) Maximum dose: 400 mg/day

Tocilizumab: SOC will be followed, Suggested Dose: If \<30 kg: 12 mg/kg IV once every 2 weeks If ≥30 kg: 8 mg/kg IV once every 2 weeks Maximum dose: 800 mg per dose

Standard medical treatment: For patients who could not be randomized by day 7, standard clinical care will be followed and patients will be followed prospectively and observationally.

Study summary

The goal of this clinical trial is to find out whether two existing medications-anakinra and tocilizumab-can effectively treat a rare and life-threatening brain condition called NORSE (New-Onset Refractory Status Epilepticus). NORSE causes continuous seizures in previously healthy children and adults and does not respond to standard treatments. It often leads to long-term disability or death.

Doctors currently use anakinra and tocilizumab as second-line treatments when first-line therapies fail, but there is no clear evidence showing which drug works better or when it should be given. This study aims to answer those questions.

The study will enroll patients across 33 hospitals in the United States, Canada, Europe, and Asia.

It includes two groups:

1. Randomized Cohort Patients will be randomly assigned to receive either anakinra or tocilizumab within the first 7 days of their illness. Only patients whose doctors were already planning to use one of these medications as part of standard care will be eligible for randomization. Researchers will monitor their recovery and compare outcomes between the two treatments.
2. Observational Cohort Patients who cannot be randomized-usually because they were diagnosed too late-will still be followed to study how the timing of treatment affects recovery.

Participants will:

* Receive one of the two medications (depending on their group assignment).
* Take part in follow-up assessments over the course of one year, including medical evaluations and surveys. Some participants may be followed annually beyond one year.
* Optionally participate in a 60-minute interview to share their or their caregiver's experience with NORSE.

Eligibility

Sex
ALL
Min age
2 Years
Max age
—
Healthy volunteers
No
Inclusion Criteria: * Age 2 and older. * In their usual state of health prior to their onset of SE. * Presenting with NORSE as defined in the consensus criteria: 1. Refractory SE (failed 2 appropriately used anti-seizure medications) in a patient without active epilepsy or other pre-existing relevant neurological disorder and without an acute or active structural, toxic, or metabolic cause found in the first 72 hours. 2. Includes patients with any RSE, not just super-refractory SE. 3. Includes patients who ultimately are discovered to have a known etiology (infectious, autoimmune, genetic, etc.), as well as those who remain cryptogenic. * Additional Inclusion Criteria for the Randomized Arm: * Anakinra and/or tocilizumab are being planned or considered as part of standard clinical care. * The onset of SE was in the prior 7 days at the time of enrollment. Exclusion Criteria: * Any acute or active systemic medical illness such as metastatic cancer, renal failure, hepatic failure, poorly controlled diabetes, etc., in the opinion of the investigators. If this is unclear, the study PI Dr. Hirsch will determine if this criterion is met. Additional Exclusion Criteria for the Randomized Control Cohort: * Contraindication to either anakinra or tocilizumab as listed in the prescribing information: 1. Known hypersensitivity to E. Coli-derived proteins, anakinra, tocilizumab, or any component of the products 2. Active serious infection at the time of initiation 3. Concomitant use of TNF blocking agents; absolute neutrophil count \< 2000; platelet count \< 100,000 per mm³; or ALT or AST \> 1.5 X the upper limit of normal 4. Elevated risk of GI perforation.

Primary outcome measure(s)

Trial sites (33)

FacilityCityRegionStatus
Barrow Institute Phoenix Arizona
Children's Hospital Colorado Aurora Colorado
Yale New Haven Hospital New Haven Connecticut
Children's National (DC) Washington D.C. District of Columbia
University of Florida Gainesville Florida
University of Chicago Chicago Illinois
Northwestern University Evanston Illinois
Mass General (MGH) Boston Massachusetts
Beth Israel Deaconess Boston Massachusetts
Boston Children's Hospital Boston Massachusetts
Mayo Clinic Rochester Minnesota
University of Nebraska Lincoln Nebraska
New York University New York New York
Columbia University New York New York
Mount Sinai (NY) New York New York
University of Cincinnati Cincinnati Ohio
Cleveland Clinic Cleveland Ohio
Oregon Health and Science University Portland Oregon
Children's Hospital Philadelphia (CHOP) Philadelphia Pennsylvania
University of Pennsylvania Philadelphia Pennsylvania
UT Southwestern Medical Center Dallas Texas
Baylor/Texas Children's Houston Texas
Seattle Children's Hospital Seattle Washington
University of Wisconsin Madison Wisconsin
Medical College of Wisconsin Milwaukee Wisconsin
Western University London Canada
Hospital for Sick Children Toronto Canada
Salpêtrière Paris France
University of Modena Modena Italy
Seoul National University Hospital Seoul South Korea
Karolinska Institute Stockholm Sweden
Great Ormond Street Hospital London United Kingdom
King's College London United Kingdom

On this site

📄 Kineret (anakinra) drug profile → 📄 Actemra (tocilizumab) drug profile →
Official registry record

This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.

View NCT07281027 on ClinicalTrials.gov ↗ ← All trials in Sweden