Safety study of patients treated with efgartigimod for Myasthenia Gravis
Official title: A Non-interventional, Post-authorisation Safety Study of Patients Treated With Efgartigimod Alfa
Run by argenx · NCT06298565 · Data updated 2026-11-12
This study is testing how safe the medication efgartigimod is for people with generalized Myasthenia Gravis who are just starting treatment or are in their first treatment cycle.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 680 (estimated) |
| Sponsor | argenx Industry-sponsored |
| Locations | 35 sites (San Francisco, California and 34 other locations) |
| Status | Recruiting |
| Started | November 4, 2024 |
| Main results expected | June 2034 |
| Study ends | June 2034 |
| Registry record updated | February 17, 2026 |
| Trial ID | NCT06298565 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates include patients diagnosed with generalized Myasthenia Gravis who are starting or have recently started treatment with efgartigimod.
✕Probably not a fit
Patients who are not diagnosed with generalized Myasthenia Gravis or those who are not starting efgartigimod treatment will not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This is a non-interventional, prospective safety study focusing on patients with generalized Myasthenia Gravis (gMG) who are either starting treatment with efgartigimod or are within their first treatment cycle. The study includes two cohorts: one for patients beginning efgartigimod and another for those who have not been exposed to the treatment. The aim is to monitor the safety and tolerability of efgartigimod in real-world settings. Participants will provide informed consent before enrollment.
Why it matters
Potential benefit: If successful, this study could provide valuable safety data that enhances the understanding of efgartigimod's effects in gMG patients.
How similar studies have gone: While this study is observational and focuses on safety, similar studies have shown success in monitoring treatment effects in other conditions, indicating a potential for valuable insights.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Patients diagnosed with gMG who are expected to start commercial efgartigimod at enrolment or who are within their first cycle of efgartigimod at enrolment or Patients diagnosed with gMG who have not been exposed to efgartigimod and for whom it is not planned to start treatment with efgartigimod at enrolment * Have provided appropriate written informed consent Exclusion Criteria: * None
Where it's running
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UCSF Medical Center - Helen Diller Family Comprehensive Cancer Center - Brain Tumor Center,
San Francisco, California, United States Recruiting -
SFM Clinical Research, LLC
Boca Raton, Florida, United States Recruiting -
University of Florida College of Medicine Jacksonville
Jacksonville Beach, Florida, United States Recruiting -
Medsol Clinical Research Center Inc
Port Charlotte, Florida, United States Recruiting -
BayCare Health System, Inc. St Anthony's Hospital
St. Petersburg, Florida, United States Recruiting -
Prairie Education and Research Cooperative and HSHS Medical Group
O'Fallon, Illinois, United States Recruiting
Show 29 more locations
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University of Iowa
Iowa City, Iowa, United States Recruiting -
University of Kansas Medical Center
Kansas City, Kansas, United States Recruiting -
Norton Neuroscience Institute
Louisville, Kentucky, United States Recruiting -
Massachusetts General Hospital
Boston, Massachusetts, United States Recruiting -
Beth Israel Deaconess Medical Center
Boston, Massachusetts, United States Recruiting -
Henry Ford Health System
Detroit, Michigan, United States Recruiting -
Oregon Health and Science University
Portland, Oregon, United States Recruiting -
University of Colorado Hospital
Portland, Oregon, United States Recruiting -
Medical University of South Carolina
Charleston, South Carolina, United States Recruiting -
National Neuromuscular Research Institute
Austin, Texas, United States Recruiting -
BCN Research, LLC - Gamma Therapeutic Center
Greenfield, Wisconsin, United States Recruiting -
Kepler Universitätsklinikum, Universitätsklinik für Neurologie, Med Campus III
Linz, Austria Recruiting -
UZ Leuven (University Hospitals Leuven)
Leuven, Belgium Recruiting -
Klinikum Altenburger Land GmbH
Altenburg, Germany Recruiting -
St. Josef-Hospital Klinikum der Ruhr Universitaet Bochum
Bochum, Germany Recruiting -
Klinikum Christophsbad
Göppingen, Germany Recruiting -
Georg-August-Universität Göttingen
Göttingen, Germany Recruiting -
Klinikum Oberberg
Gummersbach, Germany Recruiting -
Universitätsklinikum Jena
Jena, Germany Recruiting -
Universitätsklinikum Würzburg
Würzburg, Germany Recruiting -
Piazza OMS - Organizzazione Mondiale della Sanità
Bergamo, Italy Recruiting -
Ospedale Bellaria - Clinica Neurologica
Bologna, Italy Recruiting -
Azienda Ospedaliera di Rilievo Nazionale Cardarelli
Naples, Italy Recruiting -
Azienda Ospedaliero Universitaria Pisana
Pisa, Italy Recruiting -
Fondazione Policlinico Universitario Agostino Gemelli IRCCS
Roma, Italy Recruiting -
Hospital Universitari Vall d'Hebron, Unitat de Malalties Neuromusculars, Servei de Neurologia
Barcelona, Spain Recruiting -
Hospital Universitari de Bellvitge
Barcelona, Spain Recruiting -
Hospital Clinico Universitario San Carlos
Madrid, Spain Recruiting -
Hospital Universitario Virgen Macarena
Seville, Spain Recruiting
Study contacts
- Study coordinator: Sabine Coppieters, MD
- Email: Clinicaltrials@argenx.com
- Phone: 857-350-4834
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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MG patient registry to track long-term experiences and treatment patterns
This registry collects information from adults with myasthenia gravis to see how symptoms and quality of life change over time and how treatments relate to those changes.
-
Ublituximab maintenance after efgartigimod response in myasthenia gravis
This study tests whether giving ublituximab as maintenance after a positive response to efgartigimod helps adults with myasthenia gravis.
-
Pregnant Women with Neuroimmune Diseases: A long-term follow-up study
This study follows women with neuroimmune diseases and healthy controls through pregnancy and up to ten years to see how pregnancy affects disease activity and outcomes for both mother and baby.
-
Early ravulizumab for adults with myasthenic crisis in the ICU
This project will test whether giving ravulizumab early to adults with AChR-positive generalized myasthenia gravis who are in the ICU for a myasthenic crisis helps speed recovery.
-
KITE-363 treatment for relapsed or refractory autoimmune neurologic diseases
This study will test whether KITE-363 is safe and can help people with relapsed or treatment-resistant autoimmune neurologic diseases such as MS, CIDP, and myasthenia gravis.
-
ADAPT Forward master protocol testing multiple regimens for generalized myasthenia gravis
This platform tests several drug regimens, including efgartigimod IV and empasiprubart IV, in adults with generalized myasthenia gravis to find safer and more effective treatment combinations.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.