🏛️ Verified NIH Record • Updated 2026-07-06

A Study Comparing Imetelstat Versus Best Available Therapy for the Treatment of Intermediate-2 or High-risk Myelofibrosis (MF) Who Have Not Responded to Janus Kinase (JAK)-Inhibitor Treatment (NCT04576156)

A Randomized Open-Label, Phase 3 Study to Evaluate Imetelstat (GRN163L) Versus Best Available Therapy (BAT) in Patients With Intermediate-2 or High-risk Myelofibrosis (MF) Relapsed / Refractory (R/R) to Janus Kinase (JAK) Inhibitor

🔵 Active, Not Recruiting Phase3 💊 Investigational Drug / Biologic Sponsor: Geron Corporation

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

The purpose of the study is to evaluate the overall survival of participants treated with imetelstat compared to best available therapy with intermediate-2 or high-risk Myelofibrosis (MF) who are relapsed/refractory (R/R) to Janus Kinase (JAK)-Inhibitor treatment.

Who can join: Review the eligibility criteria below.

Location: University of California-San Diego/Moores UCSD Cancer Center — La Jolla, California

Age range: 18 Years

🧪 Interventions in This Study

📋 "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 (144 Sites)

Showing the first 25 of 144 sites.

  • University of California-San Diego/Moores UCSD Cancer Center — La Jolla, California
  • UCLA David Geffen School of Medicine — Los Angeles, California
  • Smilow Cancer Center at YNHH — New Haven, Connecticut
  • BRCR Medical Center Inc — Plantation, Florida
  • University of South Florida — Tampa, Florida
  • Norton Cancer Institute — Louisville, Kentucky
  • Icahn School of Medicine at Mount Sinai — New York, New York
  • Duke University Medical Center — Durham, North Carolina
  • Gabrail Cancer Center — Canton, Ohio
  • Prairie Lakes Health Care System, Inc. — Watertown, South Dakota
  • The University of Texas MD — Houston, Texas
  • Northwest Medical Specialties PLLC — Seattle, Washington
  • Hospital Aleman — Ciudad de Buenos Aires, Buenos Aires
  • Sanatorio de la Mujer — Rosario, Santa Fe Province
  • Sanatorio Allende — Córdoba,
  • Royal North Shore Hospital — St Leonards, New South Wales
  • Royal Brisbane and Women's Hospital — Herston, Queensland
  • Royal Hobart Hospital — Hobart, Tasmania
  • Epworth Healthcare — Richmond, Victoria
  • Krankenhaus Hietzing mit Neurologischem Zentrum Rosenhügel — Wein, Burgenland
  • Krankenhaus der Elisabethinen — Linz, Upper Austria
  • Kepler Universitätsklinikum Gm — Linz, Upper Austria
  • Klinikum Wels-Grieskirchen GmbH — Wels, Upper Austria
  • AZ Klina — Antwerp, Antwerpen
  • UZ Antwerpen — Edegem, Antwerpen

💰 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.

Explore by condition: All Myelofibrosis clinical trials

💡 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 ↗