🏛️ Verified NIH Record • Updated 2026-04-27

A Phase 3 Study of Pacritinib in Patients With Primary Myelofibrosis, Post Polycythemia Vera Myelofibrosis, or Post-Essential Thrombocythemia Myelofibrosis (NCT03165734)

A Randomized, Controlled Phase 3 Study of Pacritinib Versus Physician's Choice in Patients With Primary Myelofibrosis, Post Polycythemia Vera Myelofibrosis, or Post-Essential Thrombocythemia Myelofibrosis With Severe Thrombocytopenia (Platelet Count <50,000/μL)(PACIFICA)

🔵 Active, Not Recruiting Phase3 💊 Investigational Drug / Biologic Sponsor: Swedish Orphan Biovitrum

🩺 Plain-English Summary (8th-Grade Level)

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

Who can join: Review the eligibility criteria below.

Location: University of Alabama at Birmingham, (UAB) Hospital, Comprehensive Cancer Center — Birmingham, Alabama

Age range: 18 Years

📋 "Do I Qualify?" — 1-Minute Self Screener

Instant Checklist

Full eligibility criteria are available on the official NIH protocol. View the criteria ↗

📍 All Participating Trial Locations (207 Sites)

Showing the first 25 of 207 sites.

  • University of Alabama at Birmingham, (UAB) Hospital, Comprehensive Cancer Center — Birmingham, Alabama
  • Mayo Clinic Hospital — Phoenix, Arizona
  • City of Hope — Duarte, California
  • USC Norris Comprehensive Cancer Center — Los Angeles, California
  • UCLA David Geffen School of Medicine — Los Angeles, California
  • University of Colorado Cancer Center — Aurora, Colorado
  • Rocky Mountain Cancer Centers (US Oncology/McKesson) — Boulder, Colorado
  • Yale School of Medicine — New Haven, Connecticut
  • Georgetown University Hospital — Washington D.C., District of Columbia
  • George Washington University-Medical Faculty Associates — Washington D.C., District of Columbia
  • Cleveland Clinic Florida — Weston, Florida
  • Northwestern Memorial Hospital — Chicago, Illinois
  • Rush University Medical Center — Chicago, Illinois
  • The University of Chicago Medical Center — Chicago, Illinois
  • University of Kansas Cancer Center and Medical Pavilion — Westwood, Kansas
  • Ochsner Medical Center — New Orleans, Louisiana
  • Saint Agnes Hospital — Baltimore, Maryland
  • Johns Hopkins University — Baltimore, Maryland
  • American Oncology Partners of Maryland, PA — Bethesda, Maryland
  • Regional Cancer Care Associates LLC - CCBD Division — Bethesda, Maryland
  • Maryland Oncology Hematology, PA- Columbia — Columbia, Maryland
  • Michigan Medicine Hematology Clinic-Rogel Cancer Center — Ann Arbor, Michigan
  • Cancer and Hematology Centers of Western Michigan — Grand Rapids, Michigan
  • Washington University School of Medicine-Siteman Cancer Center — St Louis, Missouri
  • Comprehensive Cancer Centers of Nevada- Twain Office — Las Vegas, Nevada

💰 Cost, Insurance & Patient Rights

  • 100% Free Items: The investigational treatment and protocol-required procedures are supplied at zero cost by the sponsor.
  • Routine Patient Care: Under federal law (ACA § 2709) and many state statutes, routine care costs are covered during participation.
  • Voluntary Participation: You may withdraw at any time without affecting your standard medical care.

💡 How to Participate

  1. Check the checklist above to see if you may qualify.
  2. Review the official NIH record below to find the coordinating site.
  3. Ask about the visit schedule, what is covered at no cost, and any travel support.
  4. Confirm with your own doctor before making a decision.
🏛️ View Official NIH Record ↗