Clinical trial Recruiting at 22 sites Observational Ages 18 and up

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 typeObservational
Ages18 Years and up
SexAll
Enrollment200 (estimated)
Sponsorargenx
Industry-sponsored
Locations23 sites (Wilmington, North Carolina and 22 other locations)
StatusRecruiting
StartedAugust 11, 2025
Main results expectedOctober 2029
Study endsOctober 2029
Registry record updatedNovember 3, 2026
Trial IDNCT07264426 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

  • 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
  • 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

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.