The purpose of this research study is to evaluate a treatment regimen called IRD which will be given to participants after their stem cell transplant in an effort to help prolong the amount of time the participants are disease-free after transplant. IRD is a three-drug regimen consisting of ixazomib, lenalidomide (also called Revlimid), and dexamethasone. After 4 cycles of IRD, the participants will be randomized to receive maintenance therapy either with ixazomib or lenalidomide.
Based on the further need to improve progression-free survival and overall survival post-autologous stem cell transplantation (ASCT) for multiple myeloma and the benefits seen of consolidation/maintenance treatment with immunomodulatory drugs thalidomide and lenalidomide and the proteasome inhibitor bortezomib, the natural next step is to evaluate combination regimens of immunomodulatory drugs and proteasome inhibitors as consolidation/maintenance post-ASCT. The regimen consisting of ixazomib, lenalidomide, and dexamethasone (IRD) has been shown to have low toxicity, and the availability of an oral formulation of ixazomib allows for easier administration when compared to bortezomib. In this study, following consolidation with IRD, patients will be randomized to maintenance therapy with lenalidomide or ixazomib in order to collect pilot data comparing the toxicity and efficacy of maintenance therapy with immunomodulatory drugs and proteasome inhibitors. 09/23/2019: Upon review of the interim analysis, there will be no further randomizations into the maintenance portion of the trial. All patients will be enrolled into the lenalidomide arm with the exception of those who discontinue lenalidomide during the consolidation phase due to toxicity. Patients who discontinue lenalidomide may be enrolled into the ixazomib arm following approval from the principal investigator. 09/30/2021: Following analysis 4 in 2021, analysis of the primary endpoint, all patients receiving lenalidomide maintenance will be transitioned off-study. Patients receiving ixazomib may remain on trial until disease progression or unacceptable toxicity at the discretion of the treating physician and the site principal investigator.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
236
City of Hope
Duarte, California, United States
University of California, San Francisco
San Francisco, California, United States
Colorado Blood Cancer Institute
Denver, Colorado, United States
Emory University - Winship Cancer Institute
Atlanta, Georgia, United States
Karmanos Cancer Institute
Detroit, Michigan, United States
Mayo Clinic
Rochester, Minnesota, United States
Washington University School of Medicine
St Louis, Missouri, United States
Icahn School of Medicine at Mount Sinai
New York, New York, United States
Ohio State University Comprehensive Cancer Center
Columbus, Ohio, United States
Tennessee Oncology, PLLC
Nashville, Tennessee, United States
Number of Participants With Improvement in Minimal Residual Disease (MRD)
For the purposes of this study, a patient will be considered as having minimal residual disease if a positive result (1x10E06) is obtained using the Adaptive Clonoseq MRD testing.
Time frame: After 4 cycles of IRD consolidation treatment (approximately Day 112 of consolidation treatment)
MRD-negative Rate After ASCT
For the purposes of this study, a patient will be considered as having minimal residual disease if a positive result (1x10E06) is obtained using the Adaptive Clonoseq MRD testing
Time frame: Prior to beginning consolidation treatment (Day -28 to Day 0)
Toxicity of IRD Consolidation
For the purposes of this study, toxicity will be defined as inability to receive 4 cycles of IRD consolidation due to toxicity.
Time frame: After 4 cycles of IRD consolidation treatment (approximately Day 112 of consolidation treatment)
Response Rate of IRD Consolidation
For the purposes of this study, response rate is defined as the improvement in complete response rate. Response will be determined by the International Myeloma Working Group (IMWG) Uniform Response Criteria.
Time frame: After 4 cycles of IRD consolidation treatment (approximately Day 112 of consolidation treatment)
Progression-free Survival of IRD Consolidation
Progression-free survival (PFS) will be defined as time from ASCT to progression, relapse, or death, whichever occurs first, and those event-free survivors will be censored at withdrawal or study closeout.
Time frame: Up to 18 months after completion of maintenance therapy (Up to 5 years after starting the study)
Overall Survival of IRD Consolidation
Overall survival (OS) will be defined as time from ASCT to death due to any causes, and survivors will be censored at withdrawal or study closeout.
Time frame: Up to 18 months after completion of maintenance therapy (Up to 5 years after starting the study)
Compare Toxicity Between the Two Maintenance Arms
The descriptions and grading scales found in the revised NCI Common Terminology Criteria for Adverse Events (CTCAE) version 4.0 will be utilized for all toxicity reporting.
Time frame: 30 days after the completion of maintenance treatment (estimated to be Day 1125 of maintenance treatment)
Compare Response Rate Between the Two Maintenance Arms
* Response will be determined by the International Myeloma Working Group (IMWG) Uniform Response Criteria. Response includes stringent complete response (sCR) and complete response (CR). * sCR requires all of the following: * CR as defined below * Normal free light chain ratio (0.26-1.65) * Absence of clonal cells in the bone marrow by immunohistochemistry or immunofluorescence * CR requires all of the following: * Disappearance of monoclonal protein by both protein electrophoresis and immunofixation studies from the blood and urine * If serum and urine monoclonal protein are unmeasurable, Normal free light chain ratio (0.26-1.65) * \<5% plasma cells in the bone marrow * Disappearance of soft tissue plasmacytoma
Time frame: Through completion of maintenance treatment (estimated to be day 1095 of maintenance treatment)
Compare Progression-free Survival Between the Two Maintenance Arms
Progression-free survival (PFS) will be defined as time from ASCT to progression, relapse, or death, whichever occurs first, and those event-free survivors will be censored at withdrawal or study closeout.
Time frame: Up to 18 months after completion of maintenance therapy (Up to 5 years after starting the study)
Compare Overall Survival Between the Two Maintenance Arms
Overall survival (OS) will be defined as time from ASCT to death due to any causes, and survivors will be censored at withdrawal or study closeout.
Time frame: Up to 18 months after completion of maintenance therapy (Up to 5 years after starting the study)
Rate of MRD-positive to MRD-negative Conversion Between the Two Maintenance Arms
Time frame: Cycle 13 Day 1 of maintenance treatment (Approximately Day 364 of maintenance treatment)
Association of Progression-free Survival With MRD-negativity
Progression-free survival (PFS) will be defined as time from ASCT to progression, relapse, or death, whichever occurs first, and those event-free survivors will be censored at withdrawal or study closeout.
Time frame: Up to 18 months after completion of maintenance therapy (Up to 5 years after starting the study)
Association of Progression-free Survival With MRD-positivity
Progression-free survival (PFS) will be defined as time from ASCT to progression, relapse, or death, whichever occurs first, and those event-free survivors will be censored at withdrawal or study closeout.
Time frame: Up to 18 months after completion of maintenance therapy (Up to 5 years after starting the study)
Association of Overall Survival With MRD-negativity
Overall survival (OS) will be defined as time from ASCT to death due to any causes, and survivors will be censored at withdrawal or study closeout.
Time frame: Up to 18 months after completion of maintenance therapy (Up to 5 years after starting the study)
Association of Overall Survival With MRD-positivity
Overall survival (OS) will be defined as time from ASCT to death due to any causes, and survivors will be censored at withdrawal or study closeout.
Time frame: Up to 18 months after completion of maintenance therapy (Up to 5 years after starting the study)
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