Status:

RECRUITING

A Study to Assess the Efficacy and Safety of Efgartigimod IV in Adult Participants With Primary Immune Thrombocytopenia

Lead Sponsor:

argenx

Conditions:

Primary Immune Thrombocytopenia (ITP)

Eligibility:

All Genders

18+ years

Phase:

PHASE3

Brief Summary

The main purpose of this study is to look at the effect (efficacy) and safety of efgartigimod IV in participants with primary immune thrombocytopenia (ITP). After an up to 2 weeks screening period, el...

Eligibility Criteria

Inclusion

  • Is at least 18 years of age and the local legal age of consent for clinical studies when signing the informed consent form (ICF).
  • Has documented baseline mean platelet count of \<30 x 10\^9/L before randomization
  • Has a documented duration of primary immune thrombocytopenia (ITP) of more than 12 months on the date of informed consent form (ICF) signature.
  • Has documented prior ITP treatment with at least 1 of the following treatments: corticosteroids, intravenous immunoglobulin (IVIg), anti-D immunoglobulin, thrombopoietin receptor agonist (TPO-RAs), or rituximab.
  • Has documented insufficient response to a prior ITP treatment (the specific criteria can be found in the protocol).
  • Has documented prior response defined as 1 platelet count of ≥50 × 109/L to at least 1 of the following ITP treatments in the 3 years before the date of ICF signature: prednisone, dexamethasone, other or nonspecified corticosteroids, IVIg, or anti-D immunoglobulin

Exclusion

  • Other than the indication under study, known autoimmune disease or any medical condition that would interfere with an accurate assessment of clinical symptoms of ITP, confound the results of the study or put the participant at undue risk.
  • Secondary ITP
  • Nonimmune thrombocytopenia
  • Autoimmune hemolytic anemia
  • ITP-associated critical or severe bleeding The complete list of criteria can be found in the protocol.

Key Trial Info

Start Date :

October 18 2024

Trial Type :

INTERVENTIONAL

Allocation :

ESTIMATED

End Date :

June 1 2028

Estimated Enrollment :

69 Patients enrolled

Trial Details

Trial ID

NCT06544499

Start Date

October 18 2024

End Date

June 1 2028

Last Update

January 8 2026

Active Locations (92)

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Page 1 of 23 (92 locations)

1

Mayo Clinic Hospital Scottsdale

Phoenix, Arizona, United States, 85054

2

University of Southern California Norris Comprehensive Cancer Center

Los Angeles, California, United States, 90033

3

Sharp Memorial Hospital

Oceanside, California, United States, 92056

4

University of Colorado Hospital

Aurora, Colorado, United States, 80045