A Phase 2 interventional study of Imetelstat (7.5 mg/kg) and lenalidomide standard of care in Multiple Myeloma, sponsored by Geron Corporation. Completed at 2 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-06-17.
Sponsored by Geron Corporation · Phase 2, Interventional, and Treatment
This is an open label Phase II study to determine the rate of improvement in response of patients with previously treated multiple myeloma to imetelstat alone or in combination with lenalidomide maintenance therapy. This study will include multiple myeloma patients who either have achieved disease stabilization or who have achieved at least a partial response (PR) but failed to achieve a complete response (CR) after cytoreductive therapy for multiple myeloma; ie, have detectable but non-progressing disease and will most likely relapse.
3,760 studies on the registry are indexed under Multiple Myeloma; 769 are open to participants now.
This study's enrollment of 13 is below the median of 41 across 3,005 interventional studies indexed under Multiple Myeloma.
Browse Multiple Myeloma studies →Geron Corporation is the lead sponsor of 16 studies on the registry; none are open to participants now.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Willing and able to sign an Male or female, 18 years or older Confirmed diagnosis of multiple myeloma (secretory disease) by International Myeloma Working Group Diagnostic Criteria
Patients must meet one of the following criteria:
o Previously treated patients with multiple myeloma who achieved at least stable disease but who have failed to achieve a complete response (CR) after a minimum of one cytoreductive therapy for multiple myeloma and have detectable but non-progressing disease. Patients must have received at least one proteasome inhibitor (eg, bortezomib) or one immunomodulatory agent (eg, thalidomide or lenalidomide) or both.
Patients receiving lenalidomide as maintenance therapy may continue to receive this therapy provided that the patient has been on this maintenance therapy for a minimum of 3 months and has evidence of disease stabilization.
Disease stabilization will be defined as an M protein that varies ≤ 25% over the three measurements or remains under 0.5 g/dL whichever is smaller.
performance status 0-2 ≥ 3 months
Laboratory criteria (within 14 days of first study drug administration):
Must have fully recovered from any previous cancer treatments and/or major surgery.
Women of must have a negative serum pregnancy test and agree to use effective (two reliable forms of contraception) during and for at least 12 weeks after the last treatment.
Males must agree to use effective birth control for themselves or their partner during and for 12 weeks after the last treatment with imetelstat. For those patients receiving lenolidomide, males must use latex condom during sexual contact with women of childbearing potential even if they have undergone a successful vasectomy.
Exclusion Criteria:
Women who are pregnant or breast feeding Prior radioimmunotherapy. Known intracranial disease or epidural disease. Patients with lytic lesions of the cranium or spine secondary to myeloma are eligible to enroll.
cardiovascular disease or condition including:
Symptomatic hyperviscosity syndrome. Any other cancer therapy including chemotherapy, monoclonal antibody, signal transduction inhibitor, immunotherapy, (except topical or as premedication), thalidomide within 3 weeks prior to first study drug administration.
therapy within 4 weeks prior to first study drug administration.
Major surgery within 4 weeks prior to first study drug administration (central line placement is allowed) Anti- therapy within 2 weeks prior to first study drug administration, other than low dose aspirin prophylaxis therapy.
Full dose anticoagulation. Prophylactic low dose administration for management of IV access devices is allowed.
Known positive serology for (HIV. Any other severe, acute, or chronic medical or psychiatric condition, laboratory abnormality, or difficulty complying with protocol requirements that may increase the risk associated with study participation or study drug administration or may interfere with the interpretation of study results and, in the judgment of the investigator, would make the patient inappropriate for this study
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.
Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.
The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.
The number of neutrophils, white blood cells that help fight infection, in a given amount of blood. Too few raises the risk of infection.
It is a count, not a percentage of the white cells. Limits are written in units that mean the same: ≥ 1.5 × 10⁹/L is ≥ 1,500 per mm³ (µL). Each lab has its own reference range.
Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.
The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).
The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.
“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
The New York Heart Association’s four classes of how much heart failure limits physical activity.
Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ECOG performance status
A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.
Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Life expectancy
The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Absolute neutrophil count (ANC)
The number of neutrophils, white blood cells that help fight infection, in a given amount of blood. Too few raises the risk of infection.
It is a count, not a percentage of the white cells. Limits are written in units that mean the same: ≥ 1.5 × 10⁹/L is ≥ 1,500 per mm³ (µL). Each lab has its own reference range.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Platelets
Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hemoglobin (Hb)
The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ULN (upper limit of normal)
The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.
“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ALT and AST (liver enzymes)
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Childbearing potential
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Clinically significant
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
NYHA class (heart failure)
The New York Heart Association’s four classes of how much heart failure limits physical activity.
Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Corticosteroids (steroids)
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Investigational drug or device
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
HIV
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Imetelstat (7.5 mg/kg) with or without lenalidomide standard of care
Drug: Imetelstat (7.5 mg/kg) · Drug: lenalidomide standard of care
Imetelstat (9.4 mg/kg) with or without lenalidomide standard of care
Drug: lenalidomide standard of care · Drug: Imetelstat (9.4 mg/kg)
Drug page: Imetelstat
Imetelstat 7.5 mg/kg as a 2-hour intravenous infusion (± 10 minutes) on Days 1 and 8 of a 28-day cycle; the Day 8 dose will be omitted in patients with a prior history of bone marrow or stem cell transplant.
Also known as: GRN163L
Patients who are receiving lenalidomide as maintenance therapy upon enrollment as part of their treatment regimen may remain on this therapy during trial participation, provided that they have received this treatment for a minimum of 3 months and demonstrate evidence of stabilization of their response.
Also known as: Revlimid
Drug page: Imetelstat
Imetelstat 9.4 mg/kg as a 2-hour intravenous infusion (± 10 minutes) on Days 1 and 8 of a 28-day cycle; the Day 8 dose will be omitted in patients with a prior history of bone marrow or stem cell transplant.
Also known as: GRN163L
Rate of Improvement in Response
To determine the rate of improvement in response in patients with previously treated multiple myeloma following treatment with imetelstat alone or in combination wtih lenalidomide maintenance therapy. Response will be assessed using the International Uniform Response Criteria for Multiple Myeloma (IURCMM).
Time frame: From time of first dose (Cycle 1 day 1) through end of study period (12 mos. after last participant is enrolled)
Progression-free Survival (PFS)
As assessed from Cycle 1 Day 1 to first evidence of PD as defined by IURCMM, or death, whichever occurs first.
Time frame: From time of first dose (Cycle 1 day 1) through end of study (12 mos. after last participant is enrolled)
Safety and Tolerability
The safety and tolerability of imetelstat will be assessed by the incidence, nature, relatedness and severity of adverse events, laboratory abnormalities and vital signs. Patients who develop Grade 3 or 4 cytopenias (other than lyphophenia and/or leukopenia alon) will receive addiontal safety monitoring for reversibility.
Time frame: From time of first dose (Cycle 1 day 1) through end of study (12 mos. after last participant is enrolled)
This study is completed, as verified in Jun 2026. You cannot join it, but the record below documents what was studied.
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Studies of the drug tested here: Imetelstat
Geron Corporation