Testing the Combination of Two Approved Drugs and One Experimental Drug in Patients With Relapsed or Refractory Multiple Myeloma
A Phase I/II Study of the Safety, Tolerability and Efficacy of Belantamab Mafodotin (GSK2857916) in Combination With Iberdomide (CC-220)/Dexamethasone Versus Belantamab Mafodotin (GSK2857916)/Dexamethasone in Relapsed Refractory Multiple Myeloma
2 other identifiers
interventional
88
1 country
40
Brief Summary
This phase I/II trial tests the safety, side effects, best dose, and effectiveness of iberdomide in combination with belantamab mafodotin and dexamethasone in treating patients with multiple myeloma (MM) that has come back after a period of improvement (relapsed) or that does not respond to treatment (refractory). Multiple myeloma is a cancer that affects white blood cells called plasma cells, which are made in the bone marrow and are part of the immune system. Multiple myeloma cells have a protein on their surface called B-cell maturation antigen (BCMA) that allows the cancer cells to survive and grow. Immunotherapy with iberdomide, may induce changes in body's immune system and may interfere with the ability of cancer cells to grow and spread. Belantamab mafodotin has been designed to attach to the BCMA protein, which may cause the myeloma cell to become damaged and die. Dexamethasone is in a class of medications called corticosteroids. It is used to reduce inflammation and lower the body's immune response to help lessen the side effects of chemotherapy drugs. Iberdomide plus belantamab mafodotin may help slow or stop the growth of cancer in patients with multiple myeloma.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_1
Started Apr 2025
Longer than P75 for phase_1
40 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
January 22, 2024
CompletedFirst Posted
Study publicly available on registry
January 30, 2024
CompletedStudy Start
First participant enrolled
April 23, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
May 1, 2028
ExpectedStudy Completion
Last participant's last visit for all outcomes
August 1, 2030
March 25, 2026
March 1, 2026
3 years
January 22, 2024
March 24, 2026
Conditions
Outcome Measures
Primary Outcomes (2)
Maximum tolerated dose (MTD) of iberdomide (Phase I)
MTD will be defined as the highest dose level among those tested where at most one out of 6 patients develops a DLT prior to the start of their second cycle of treatment. Will be assessed by NCI CTCAE v 5.0.
During the first cycle of therapy, up to 28 days
Progression-free survival (PFS) (Phase II)
Will be compared between the two treatment arms. the methods of Kaplan and Meier will be used to graphically evaluate these distributions as well as to estimate the median PFS and corresponding 95% confidence intervals.
From randomization to the time of documented disease progression and/or death due to any cause, assessed up to 3 years
Secondary Outcomes (5)
Rate of grade 3+ Adverse Events (AEs)
Up to 3 years
Complete response (CR) rate
up to 3 years
Overall response rate (ORR)
up to 3 years
Duration of response (DoR)
p to 3 years
Overall Survival (OS)
Up to 3 years.
Study Arms (3)
Phase I (iberdomide, belantamab mafodotin, dexamethasone)
EXPERIMENTALPatients receive iberdomide orally on days 1-21 and 29-49, belantamab mafodotin IV on day 1, and dexamethasone PO on days 1, 8, 15, 22, 29, 36, 43, and 50 of each cycle. Cycles repeat every 56 days in the absence of disease progression or unacceptable toxicity. Patients undergo ECHO during screening as clinically indicated and CT, MRI and/or PET scans during screening and as clinically indicated on study. Patients also undergo a bone marrow biopsy and aspiration and blood sample collection throughout trial.
Phase II, Arm I (belantamab mafodotin, dexamethasone)
ACTIVE COMPARATORPatients receive belantamab mafodotin IV on day 1 and dexamethasone PO on days 1, 8, 15, 22, 29, 36, 43, and 50 of each cycle. Cycles repeat every 56 days in the absence of disease progression or unacceptable toxicity. Patients who progress may cross over to Arm II. Patients undergo ECHO during screening as clinically indicated and CT, MRI and/or PET scans during screening and as clinically indicated on study. Patients also undergo a bone marrow biopsy and aspiration and blood sample collection throughout trial.
Phase II, Arm II (iberdomide, belantamab mafodotin)
EXPERIMENTALPatients receive iberdomide orally on days 1-21 and 29-49, belantamab mafodotin IV on day 1, and dexamethasone PO on days 1, 8, 15, 22, 29, 36, 43, and 50 of each cycle. Cycles repeat every 56 days in the absence of disease progression or unacceptable toxicity. Patients undergo ECHO during screening as clinically indicated and CT, MRI and/or PET scans during screening and as clinically indicated on study. Patients also undergo bone marrow biopsy and aspiration and blood sample collection throughout trial.
Interventions
Receive IV
Receive PO
Undergo ECHO
Undergo CT
Undergo PET
Undergo Bone Marrow Biopsy
Undergo Bone Marrow Aspirate
Undergo blood sample collection
Receive PO
Undergo MRI
Eligibility Criteria
You may qualify if:
- No evidence of active mucosal or internal bleeding.
- No known immediate or delayed hypersensitivity reaction or idiosyncratic reactions to belamaf or drugs chemically related to belamaf, or any of the components of the study treatment.
- Symptomatic amyloidosis, active POEMS syndrome (polyneuropathy, organomegaly, endocrinopathy, monoclonal plasma proliferative disorder, skin changes) or active plasma cell leukemia at the time of screening.
- Chronic concomitant treatment with strong inhibitors of CYP3A4 is not allowed on this study. Patients on strong CYP3A4 inhibitors must discontinue the drug for 14 days prior to registration on the study. Chronic concomitant treatment with strong CYP3A4 inducers is not allowed. Patients must discontinue the drug 14 days prior to the start of study treatment. Participant must not have current corneal epithelial disease except mild changes in corneal epithelium. For belantamab mafodotin, concomitant administration with strong inhibitors of OATP should be avoided.
- RE-REGISTRATION ELIGIBILITY CRITERIA: Patients must meet criteria for progression of myeloma as defined by IMWG criteria indicated as any of the following:
- ≥ 25% increase in M-protein (must be at least 0.5 g/dl above nadir from last treatment regimen).
- % difference between involved and uninvolved serum free light chains from its nadir or
- The development of new plasmacytomas or hypercalcemia not due to other causes. In the absence of progression by serum M protein or free light chain, biopsy of new plasmacytoma of extramedullary disease is warranted.
- If refractory myeloma, it should be defined by IMWG criteria as disease which has become non-responsive or progressive on belamaf/dexamethasone.
- RE-REGISTRATION ELIGIBILITY CRITERIA: Measurable disease defined by IMWG criteria as:
- Serum M-protein ≥ 0.5 g/dL.
- Urine monoclonal protein ≥ 200 mg/24h.
- Serum FLC assay: Involved FLC level ≥ 10 mg/dl (≥ 100 mg/l) and serum free light chain ratio is abnormal.
- PET/CT or MRI findings consistent with (c/w) disease progression.
- RE-REGISTRATION ELIGIBILITY CRITERIA: Absolute neutrophil count (ANC) ≥ 1,000/mm\^3.
- +5 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (40)
Mary Greeley Medical Center
Ames, Iowa, 50010, United States
McFarland Clinic - Ames
Ames, Iowa, 50010, United States
McFarland Clinic - Boone
Boone, Iowa, 50036, United States
McFarland Clinic - Trinity Cancer Center
Fort Dodge, Iowa, 50501, United States
McFarland Clinic - Jefferson
Jefferson, Iowa, 50129, United States
McFarland Clinic - Marshalltown
Marshalltown, Iowa, 50158, United States
Tufts Medical Center
Boston, Massachusetts, 02111, United States
Dana-Farber Cancer Institute
Boston, Massachusetts, 02215, United States
Coborn Cancer Center at Saint Cloud Hospital
Saint Cloud, Minnesota, 56303, United States
Memorial Sloan Kettering Monmouth
Middletown, New Jersey, 07748, United States
Memorial Sloan Kettering Bergen
Montvale, New Jersey, 07645, United States
Memorial Sloan Kettering Commack
Commack, New York, 11725, United States
Memorial Sloan Kettering Westchester
Harrison, New York, 10604, United States
Memorial Sloan Kettering Cancer Center
New York, New York, 10065, United States
OhioHealth O'Bleness Hospital
Athens, Ohio, 45701, United States
Columbus Oncology and Hematology Associates Inc
Columbus, Ohio, 43214, United States
Riverside Methodist Hospital
Columbus, Ohio, 43214, United States
Grant Medical Center
Columbus, Ohio, 43215, United States
Doctors Hospital
Columbus, Ohio, 43228, United States
Delaware Health Center-Grady Cancer Center
Delaware, Ohio, 43015, United States
Grady Memorial Hospital
Delaware, Ohio, 43015, United States
Columbus Oncology and Hematology Associates
Dublin, Ohio, 43016, United States
Dublin Methodist Hospital
Dublin, Ohio, 43016, United States
OhioHealth Mansfield Hospital
Mansfield, Ohio, 44903, United States
OhioHealth Marion General Hospital
Marion, Ohio, 43302, United States
OhioHealth Pickerington Methodist Hospital
Pickerington, Ohio, 43147, United States
OhioHealth Westerville Medical Campus/Westerville Cancer Center
Westerville, Ohio, 43082, United States
University of Oklahoma Health Sciences Center
Oklahoma City, Oklahoma, 73104, United States
Vanderbilt University/Ingram Cancer Center
Nashville, Tennessee, 37232, United States
Huntsman Cancer Institute/University of Utah
Salt Lake City, Utah, 84112, United States
Saint Vincent Hospital Cancer Center Green Bay
Green Bay, Wisconsin, 54301, United States
Saint Vincent Hospital Cancer Center at Saint Mary's
Green Bay, Wisconsin, 54303, United States
Medical College of Wisconsin
Milwaukee, Wisconsin, 53226, United States
ProHealth D N Greenwald Center
Mukwonago, Wisconsin, 53149, United States
ProHealth Oconomowoc Memorial Hospital
Oconomowoc, Wisconsin, 53066, United States
Saint Vincent Hospital Cancer Center at Sheboygan
Sheboygan, Wisconsin, 53081, United States
Sheboygan Physicians Group
Sheboygan, Wisconsin, 53081, United States
Saint Vincent Hospital Cancer Center at Sturgeon Bay
Sturgeon Bay, Wisconsin, 54235-1495, United States
ProHealth Waukesha Memorial Hospital
Waukesha, Wisconsin, 53188, United States
UW Cancer Center at ProHealth Care
Waukesha, Wisconsin, 53188, United States
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- phase 1
- Allocation
- RANDOMIZED
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- SEQUENTIAL
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
January 22, 2024
First Posted
January 30, 2024
Study Start
April 23, 2025
Primary Completion (Estimated)
May 1, 2028
Study Completion (Estimated)
August 1, 2030
Last Updated
March 25, 2026
Record last verified: 2026-03