RECRUITING

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

Conditions

Quick Navigation

Study Overview

This clinical trial focuses on testing the efficacy of different digital interventions to promote re-engagement in cancer-related long-term follow-up care for adolescent and young adult (AYA) survivors of childhood cancer.

Description

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, eligible participants will be randomized in a 2:1 ratio to receive either efgartigimod IV or placebo IV, respectively during the double-blinded treatment period (DBTP). At the end of the treatment period (up to 24 weeks), all participants will receive efgartigimod IV during the first 52-week open-label treatment period (OLTP1). At the end of the first OLTP1, participants may begin a second 52-week OLTP2. After the OLTP2, the participants will enter a follow-up period (approximately 8 weeks) while off study drug. The participants will be in the study for up to 138 weeks.

Official Title

A Phase 3, Multicenter, Randomized, Double-Blinded, Placebo-Controlled, Parallel-Arm Study Followed by an Open-Label Arm to Evaluate the Efficacy and Safety of Efgartigimod IV in Adult Participants with Primary Immune Thrombocytopenia

Quick Facts

Study Start:2024-10-18

Study Completion:2028-06

Study Type:Not specified

Phase:Not Applicable

Enrollment:Not specified

Status:RECRUITING

Study ID

NCT06544499

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Ages Eligible for Study:18 Years

Sexes Eligible for Study:ALL

Accepts Healthy Volunteers:No

Standard Ages:ADULT, OLDER_ADULT

Inclusion Criteria	Exclusion Criteria
* 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	* 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.

Inclusion Criteria

Exclusion Criteria

* 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

* 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.

Contacts and Locations

Study Contact

Sabine Coppieters, MD

CONTACT

857-350-4834

Clinicaltrials@argenx.com

Study Locations (Sites)

Clinical Research Alliance Inc.

Westbury, New York, 11590

United States

Collaborators and Investigators

Sponsor: argenx

Study Record Dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Registration Dates

Study Start Date2024-10-18

Study Completion Date2028-06

Study Record Updates

Study Start Date2024-10-18

Study Completion Date2028-06

Terms related to this study

Additional Relevant MeSH Terms

Primary Immune Thrombocytopenia (ITP)