Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.
Safety and Treatment Satisfaction in Adults With Chronic ITP After Switching to Avatrombopag From Eltrombopag or Romiplostim
NCT04638829 · View on ClinicalTrials.gov ↗
Study Summary
Evaluate the safety and tolerability of avatrombopag given for 90 days after stopping treatment with eltrombopag or romiplostim.
Conditions Studied
Interventions
- DRUG Avatrombopag Oral Tablet
Study Locations (20)
Florida
- Sobi Site 129 — Miami
- Sobi Site 120 — Ocala
- Sobi Site 125 — St. Petersburg
- Sobi Site 118 — Tampa
Illinois
- Sobi Site 126 — Chicago
- Sobi Site 109 — Peoria
North Carolina
- Sobi Site 121 — Chapel Hill
- Sobi Site 116 — Greenville
Pennsylvania
- Sobi Site 127 — Philadelphia
- Sobi Site 102 — York
Arizona
- Sobi Site 110 — Tucson
California
- Sobi Site 119 — Whittier
District of Columbia
- Sobi Site 123 — Washington D.C.
Louisiana
- Sobi Site 124 — New Orleans
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 60 participants |
| Start Date | 2021-03-15 |
| Est. Completion | 2024-01-03 |
| Phase | Phase 4 |
Interested in This Trial?
Always speak with your doctor before enrolling in a clinical trial.
Full Details on ClinicalTrials.gov ↗What the Registry Record Tells You About NCT04638829
The ClinicalTrials.gov registry entry for NCT04638829 describes a study currently listed as completed. It is categorized as Phase 4, which is the standard way researchers label where a study sits along the investigational pathway from early safety work through later efficacy and post-marketing evaluation. The registered enrollment target is 60 participants, a figure that helps gauge the scale of data the investigators plan to collect. The listed sponsor is Sobi, which has 1 total studies on file at ClinicalTrials.gov, and sponsors are the parties responsible for study design, oversight, and regulatory filings.
The record links to 1 condition, with Immune Thrombocytopenia appearing as the primary indexed condition, and to 1 intervention — of which Avatrombopag Oral Tablet is the first listed. Interventions can include drugs, devices, procedures, behavioral programs, or observational arms, and each is tracked as a separate registry field so that downstream queries can filter accurately. When a trial lists multiple interventions, it usually reflects a multi-arm design or a comparison protocol rather than a single treatment being tested in isolation. The brief summary published in the registry is the clearest source of protocol intent and should be read before drawing conclusions from any sidebar tags.
Geographic footprint matters for practical reasons: NCT04638829 reports 20 study locations spanning 14 distinct geographic areas — top geographies include Florida, Illinois, North Carolina. A larger site network tends to correlate with broader recruitment capacity, but it does not imply anything about study quality, and site-level enrollment status can diverge from the overall registry status shown above. Every data point on this page comes from the public ClinicalTrials.gov dataset and is reproduced here for reference only; it is not a medical recommendation, an endorsement of the sponsor, or an invitation to enroll. Verify current status, eligibility criteria, and contact details directly at ClinicalTrials.gov, and discuss any participation decision with your own healthcare provider.
Frequently Asked Questions
What is clinical trial NCT04638829 about?
NCT04638829 is a clinical study titled "Safety and Treatment Satisfaction in Adults With Chronic ITP After Switching to Avatrombopag From Eltrombopag or Romiplostim". Evaluate the safety and tolerability of avatrombopag given for 90 days after stopping treatment with eltrombopag or romiplostim.
What is the current status of trial NCT04638829?
This trial is currently completed. It is a Phase 4 study. The enrollment target is 60 participants. The study started on 2021-03-15. Estimated completion is 2024-01-03.
What conditions does trial NCT04638829 study?
This clinical trial studies the following conditions: Immune Thrombocytopenia. These conditions were identified from the trial registry and reflect the primary focus areas of the research.
What interventions are being tested in trial NCT04638829?
The interventions under investigation include: Avatrombopag Oral Tablet (DRUG). Each intervention is being evaluated for safety and efficacy as part of this clinical study.
Who is sponsoring clinical trial NCT04638829?
This trial is sponsored by Sobi, which has 1 total clinical trials registered on ClinicalTrials.gov. The sponsor is responsible for the study's design, funding, and regulatory compliance.
Where is trial NCT04638829 being conducted?
This trial has 20 study locations across Arizona, California, District of Columbia, Florida, Illinois. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
Learn More About Clinical Trials
How Clinical Trials Work
Understand phases 1-4, trial design, randomization, and the informed consent process.
Patient Rights in Clinical Trials
Your rights as a participant: consent, withdrawal, privacy, and who to contact.
Finding the Right Clinical Trial
A practical guide to searching trials, understanding eligibility, and evaluating options.
All Guides
Browse our complete library of clinical trial educational resources.
Read our methodology — how this data is sourced, computed, and verified.