A Study of Efgartigimod IV in Participants From 12 Years to Less Than 18 Years of Age With Chronic Immune Thrombocytopenia (ITP)
Key facts
- Where
- Bucharest, RomaniaSee the site
- Phase
- Phase 2/3
Could this be for you?
Answer for yourself. This is not a decision: only the study team can say whether you can take part.
- Are you between 12 and 17 years old?
Source: NCT07194850, who can take part
Where in Romania
- Institutul Clinic FundeniBucharest, RomaniaTaking people
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Contact the study team: see the registry record → Contacts and Locations
Print a page for my doctorTrial details
- Who runs it
- argenx
- Trial code
- NCT07194850EU 2025-521055-23-00
- Record updated
- 16 October 2026
- Original description
The main purpose of this study is to confirm the correct dose of efgartigimod IV for treating patients aged 12 to younger than 18 years with chronic immune thrombocytopenia (ITP).Read full original descriptionShow less
A Multicenter, Randomized, Double-blinded, Parallel-Arm, Placebo-Controlled, Pharmacokinetic and Pharmacodynamic Study Followed by an Open-Label Arm to Evaluate Efgartigimod IV in Pediatric Participants From 12 Years to Less Than 18 Years of Age With Chronic ITP
The main purpose of this study is to confirm the correct dose of efgartigimod IV for treating patients aged 12 to younger than 18 years with chronic immune thrombocytopenia (ITP).
The study consists of a double-blinded treatment period (DBTP) in which the participants will be randomized in a 2:1 ratio to receive either efgartigimod IV or placebo IV. At the end of the treatment period (up to 24 weeks), all participants will receive efgartigimod IV during the first year open-label treatment period (OLTP1). At the end of the first OLTP1, participants may begin a second year (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.
More information can be found here: https://clinicaltrials.argenx.com/advancejunior
Inclusion: Is aged 12 to less than 18 years when completing the informed consent process; Has a documented duration of primary ITP of more than 12 months on the date the informed consent process is complete; Has documented prior ITP treatment with at least 1 of the following treatments: corticosteroids, IVIg, anti-D immunoglobulin, thrombopoietin receptor agonist (TPO-RAs), or rituximab; Has documented prior response, defined as 1 platelet count of ≥50 × 10\^9/L to at least 1 of the following ITP treatments: prednisone, other or nonspecified corticosteroids, IVIg, or anti-D immunoglobulin; Has documented insufficient response to a prior ITP treatment with corticosteroids, IVIg, anti-D immunoglobulin, TPO-RAs, rituximab, or splenectomy; Has documented mean platelet count of less than 30 x10\^9/L.
Exclusion: ITP-associated critical or severe bleeding; History of hereditary thrombocytopenia; Secondary ITP according to the following definition by the International Working Group (IWG): all forms of immune-mediated thrombocytopenia except primary ITP; Nonimmune thrombocytopenia.