Real-world efgartigimod use in adults with CIDP
Official title: Real-World Efgartigimod Effectiveness in CIDP: A Prospective Study
Run by argenx · NCT07264426 · Data updated 2026-11-12
This study will see if efgartigimod helps adults with CIDP when given as part of routine clinical care.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 200 (estimated) |
| Sponsor | argenx Industry-sponsored |
| Locations | 23 sites (Wilmington, North Carolina and 22 other locations) |
| Status | Recruiting |
| Started | August 11, 2025 |
| Main results expected | October 2029 |
| Study ends | October 2029 |
| Registry record updated | November 3, 2026 |
| Trial ID | NCT07264426 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults (18 years or older) with a diagnosis of CIDP who have not previously received efgartigimod and plan to start it within the approved label in their country.
✕Probably not a fit
People with polyradiculoneuropathy due to other causes, those already treated with efgartigimod, or those enrolled in interventional clinical trials are unlikely to benefit from joining this observational 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 prospective, noninterventional study that will follow adults with CIDP who are starting efgartigimod in routine practice for up to two years. Treatment choices and timing are left to participants and their physicians according to local standard of care. The study will document each participant's treatment journey, clinical outcomes, and healthcare service use after initiating efgartigimod. Enrollment is open at selected sites including a U.S. virtual site and German hospital centers, and participants must be efgartigimod‑naïve at baseline.
Why it matters
Potential benefit: If positive, the results could show that efgartigimod improves symptoms or reduces healthcare use for adults with CIDP in real-world settings.
How similar studies have gone: Efgartigimod has demonstrated benefit in related autoimmune neuromuscular disease (myasthenia gravis) and some clinical trials in CIDP have shown promise, but large real-world CIDP datasets remain limited.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Aged ≥18 years at time of providing informed consent * Diagnosed with CIDP * Planned to be receiving efgartigimod treatment within the CIDP treatment label of efgartigimod in the participant's respective country * Efgartigimod treatment-naïve at time of screening Exclusion Criteria: * Polyradiculoneuropathy due to any other cause(s) * Current participation in any interventional clinical study at time of screening, or planned participation before initiation of efgartigimod
Where it's running
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PPD Virtual
Wilmington, North Carolina, United States Recruiting -
Jüdisches Krankenhaus Berlin
Berlin, Germany Recruiting -
Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil GmbH
Bochum, Germany Recruiting -
UK-RUB - Katholisches Klinikum Bochum - St. Josef Hospital
Bochum, Germany Recruiting -
Universitätsklinikum Köln
Cologne, Germany Recruiting -
Universitätsklinikum Düsseldorf
Düsseldorf, Germany Recruiting
Show 17 more locations
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Universitätsklinikum Frankfurt
Frankfurt, Germany Recruiting -
UKGM - Universitätsklinikum Gießen und Marburg GmbH
Giessen, Germany Recruiting -
Universitätsmedizin Göttingen
Göttingen, Germany Recruiting -
Universitätsklinikum Hamburg Eppendorf
Hamburg, Germany Recruiting -
Neurologie Neuer Wall - Dr.Bredow & Partner
Hamburg, Germany Recruiting -
Medizinische Hochschule Hannover
Hanover, Germany Recruiting -
Universitatsklinikum des Saarlandes
Homburg, Germany Recruiting -
Universitätsklinikum Magdeburg A.ö.R.
Magdeburg, Germany Recruiting -
Universitätsklinikum Mannheim
Mannheim, Germany Recruiting -
Universitätsklinikum Gießen und Marburg GmbH - Standort Marburg
Marburg, Germany Recruiting -
Mühlenkreiskliniken - Johannes Wesling Klinikum Minden
Minden, Germany Recruiting -
Friedrich-Baur-Institute München
München, Germany Recruiting -
Immanuel Klinik Rüdersdorf
Rüdersdorf, Germany Recruiting -
Diakonie-Klinikum Schwäbisch Hall gGmbH
Schwäbisch Hall, Germany Recruiting -
Universitätsklinikum Tübingen
Tübingen, Germany Recruiting -
Universitätsklinikum Ulm
Ulm, Germany Recruiting -
Alexianer St. Josef Potsdam GmbH
Potsdam, Germany Completed
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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Empasiprubart for adults with CIDP
This study will test whether IV empasiprubart helps improve symptoms and is safe for adults with CIDP, with an initial 24-week randomized comparison to placebo followed by two years of empasiprubart for all participants.
-
Weekly subcutaneous XEMBIFY versus every-3-week intravenous Gamunex-C for CIDP
This will test whether weekly under-the-skin XEMBIFY gives similar blood IgG levels as Gamunex-C given into a vein every three weeks in people with CIDP.
-
BAFF‑R CAR T‑cell treatment for refractory neuroimmune diseases
This trial will try personalized BAFF‑R CAR T cells to reduce disease activity in people with hard‑to‑treat conditions such as CIDP, NMOSD, myasthenia gravis, and inflammatory myopathies.
-
Universal CD19/BCMA CAR T-cell therapy for relapsed or refractory neurological autoimmune diseases
This will test whether a single infusion of universal CD19/BCMA CAR T-cells given after chemotherapy helps adults with relapsed or refractory neurological autoimmune diseases who have CD19- or BCMA-positive B cells.
-
Empasiprubart versus IVIg for treating CIDP in adults
This trial tests whether empasiprubart works as well as IVIg and is safe for adults with CIDP who currently benefit from IVIg.
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Using rituximab to achieve remission in patients with chronic inflammatory demyelinating polyneuropathy
This study is testing if rituximab can help people with chronic inflammatory demyelinating polyneuropathy feel better and reduce their need for other treatments.
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.