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A Phase 3 Study of Pacritinib in Patients With Primary Myelofibrosis, Post Polycythemia Vera Myelofibrosis, or Post-Essential Thrombocythemia Myelofibrosis
NCT03165734 · View on ClinicalTrials.gov ↗
Study Summary
This study (study ID PAC203 North America; PAC303 ex-North America) is evaluating 200 mg BID of pacritinib compared to physician's choice (P/C) therapy in patients with MF and severe thrombocytopenia (platelet count \<50,000/μL). Approximately 399 patients in total will be enrolled, randomized 2:1 to either pacritinib (approximately 266 patients) or to P/C therapy (approximately 133 patients) Condition or disease: Primary Myelofibrosis/Post-Polycythemia Vera Myelofibrosis/ Post-essential Thrombocythemia Myelofibrosis Intervention/treatment: Drug-Pacritinib
Conditions Studied
Interventions
- DRUG Pacritinib
- DRUG Physician's Choice medications
Study Locations (20)
Maryland
- Saint Agnes Hospital — Baltimore
- Johns Hopkins University — Baltimore
- American Oncology Partners of Maryland, PA — Bethesda
- Regional Cancer Care Associates LLC - CCBD Division — Bethesda
California
- City of Hope — Duarte
- USC Norris Comprehensive Cancer Center — Los Angeles
- UCLA David Geffen School of Medicine — Los Angeles
Illinois
- Northwestern Memorial Hospital — Chicago
- Rush University Medical Center — Chicago
- The University of Chicago Medical Center — Chicago
Colorado
- University of Colorado Cancer Center — Aurora
- Rocky Mountain Cancer Centers (US Oncology/McKesson) — Boulder
District of Columbia
- Georgetown University Hospital — Washington D.C.
- George Washington University-Medical Faculty Associates — Washington D.C.
Alabama
- University of Alabama at Birmingham, (UAB) Hospital, Comprehensive Cancer Center — Birmingham
Arizona
- Mayo Clinic Hospital — Phoenix
Connecticut
- Yale School of Medicine — New Haven
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 399 participants |
| Start Date | 2017-06-26 |
| Est. Completion | 2027-07-30 |
| Phase | Phase 3 |
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Full Details on ClinicalTrials.gov ↗What the Registry Record Tells You About NCT03165734
The ClinicalTrials.gov registry entry for NCT03165734 describes a study currently listed as recruiting. It is categorized as Phase 3, 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 399 participants, a figure that helps gauge the scale of data the investigators plan to collect. The listed sponsor is Swedish Orphan Biovitrum, which has 38 total studies on file at ClinicalTrials.gov, and sponsors are the parties responsible for study design, oversight, and regulatory filings.
The record links to 3 conditions, with Primary Myelofibrosis appearing as the primary indexed condition, and to 2 interventions — of which Pacritinib 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: NCT03165734 reports 20 study locations spanning 11 distinct geographic areas — top geographies include Maryland, California, Illinois. 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 NCT03165734 about?
NCT03165734 is a clinical study titled "A Phase 3 Study of Pacritinib in Patients With Primary Myelofibrosis, Post Polycythemia Vera Myelofibrosis, or Post-Essential Thrombocythemia Myelofibrosis". This study (study ID PAC203 North America; PAC303 ex-North America) is evaluating 200 mg BID of pacritinib compared to physician's choice (P/C) therapy in patients with MF and severe thrombocytopenia (platelet count \<50,000/μL). Approximately 399 patients in total will be enrolled, randomized 2:1 t...
What is the current status of trial NCT03165734?
This trial is currently recruiting. It is a Phase 3 study. The enrollment target is 399 participants. The study started on 2017-06-26. Estimated completion is 2027-07-30.
What conditions does trial NCT03165734 study?
This clinical trial studies the following conditions: Primary Myelofibrosis, Post-essential Thrombocythemia Myelofibrosis, Post-polycythemia Vera Myelofibrosis. These conditions were identified from the trial registry and reflect the primary focus areas of the research.
What interventions are being tested in trial NCT03165734?
The interventions under investigation include: Pacritinib (DRUG), Physician's Choice medications (DRUG). Each intervention is being evaluated for safety and efficacy as part of this clinical study.
Who is sponsoring clinical trial NCT03165734?
This trial is sponsored by Swedish Orphan Biovitrum, which has 38 total clinical trials registered on ClinicalTrials.gov. The sponsor is responsible for the study's design, funding, and regulatory compliance.
Where is trial NCT03165734 being conducted?
This trial has 20 study locations across Alabama, Arizona, California, Colorado, Connecticut. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
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