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Study to Evaluate Imetelstat (GRN163L) in Subjects With International Prognostic Scoring System (IPSS) Low or Intermediate-1 Risk Myelodysplastic Syndrome (MDS)

Trial Status: Active

The purpose of this study is to evaluate the efficacy and safety of imetelstat in transfusion dependent participants with low or intermediate-1 risk myelodysplastic syndrome (MDS) that is relapsed / refractory to erythropoiesis-stimulating agent (ESA) treatment.

Inclusion Criteria

  • Man or woman greater than or equal to (>=) 18 years of age
  • In Part 1, diagnosis of myelodysplastic syndrome (MDS) according to World Health Organization (WHO) criteria
  • International Prognostic Scoring System (IPSS) low Risk or intermediate-1 risk MDS
  • Red blood cell (RBC) transfusion dependent, defined as requiring at least 4 RBC units transfused over an 8-week period during the 16 weeks prior to Study Entry; pre-transfusion hemoglobin (Hb) should be less than or equal to 9.0 gram per deciliter (g/dL) to count towards the 4 units total
  • Eastern Cooperative Oncology Group (ECOG) performance status 0, 1 or 2

Exclusion Criteria

  • Participant has known allergies, hypersensitivity, or intolerance to imetelstat or its excipients
  • Participant has received an investigational drug or used an invasive investigational medical device within 30 days prior to Study Entry or is currently enrolled in an investigational study
  • Prior treatment with imetelstat
  • Have received corticosteroids greater than (>) 30 milligram per day (mg/day) prednisone or equivalent, or growth factor treatment within 4 weeks prior to study entry
  • a) Prior treatment with a hypomethylating agent (example [eg], azacitidine, decitabine); b) Prior treatment with lenalidomide; c) Has received an erythropoiesis-stimulating agent (ESA) or any chemotherapy, immunomodulatory, or immunosuppressive therapy within 4 weeks prior to study entry (8 weeks for long-acting ESAs)


University of Alabama at Birmingham Cancer Center


Los Angeles
UCLA / Jonsson Comprehensive Cancer Center
Status: ACTIVE


New Haven
Yale University


University of Chicago Comprehensive Cancer Center


Mayo Clinic in Rochester


Saint Louis
Siteman Cancer Center at Washington University
Status: ACTIVE

New Mexico

University of New Mexico Cancer Center
Status: ACTIVE

New York

New York
Icahn School of Medicine at Mount Sinai
Status: ACTIVE
NYP / Columbia University Medical Center / Herbert Irving Comprehensive Cancer Center
Status: ACTIVE

North Carolina

Duke University Medical Center


Case Comprehensive Cancer Center
Status: ACTIVE
Contact: bhumika patel
Ohio State University Comprehensive Cancer Center
Status: ACTIVE


Vanderbilt University / Ingram Cancer Center
Status: ACTIVE


UT Southwestern / Simmons Cancer Center-Dallas
Status: ACTIVE
Contact: Marcella West Aguilar
Phone: 214-648-1479


Fred Hutch / University of Washington Cancer Consortium
Status: ACTIVE
Contact: Bart Lee Scott
Phone: 800-422-6237

This is a Phase 2/3, multicenter study of imetelstat that consists of 2 parts. Part 1 is an

open-label, single-arm design to assess the efficacy and safety of imetelstat. Approximately

55 participants will be enrolled in Part 1, including the expansion cohort, and be

followed-up for safety, hematologic improvement and reduction in transfusion requirement.

Part 2 of the study will be initiated if data from Part 1 are supportive of a satisfactory

benefit/risk profile. Part 2 is a double-blind, randomized design to compare the efficacy of

imetelstat with placebo. Approximately 170 eligible participants will be randomized in a 2:1

ratio to receive either imetelstat or placebo, respectively. Each part of the study will

consist of 3 phases: a Screening phase (up to 28 days); a treatment phase; and a

post-treatment follow-up phase which will continue until death, lost to follow-up, withdrawal

of consent, or the End of the Study (whichever occurs first). The End of the Study is defined

as 2 years after the study entry of the last participant or anytime the sponsor terminates

the study, whichever comes first.

Trial Phase Phase II/III

Trial Type Treatment

Lead Organization
Geron Corporation

  • Primary ID CR107947
  • Secondary IDs NCI-2015-02285, 63935937MDS3001, 2015-002874-19
  • ID NCT02598661