Phase 1b/2 Study Testing Radium-223 Dichloride/Bortezomib/Dexamethasone Combination in Relapsed Multiple Myeloma
Multiple Myeloma
About this trial
This is an interventional treatment trial for Multiple Myeloma focused on measuring Radium-223 dichloride, bortezomib, dexamethasone, early relapsed multiple myeloma, combination therapy multiple myeloma
Eligibility Criteria
Inclusion Criteria:
- Cytologically or histologically confirmed diagnosis of multiple myeloma
- Subjects must have received at least 1 and not more than 3 previous lines of treatment and have had a response to treatment (i.e., achieved a minimal response [MR] or better) according to the International Myeloma Working Group (IMWG) uniform response criteria
- Subjects must have had progressive disease according to the IMWG uniform response criteria following the last multiple myeloma treatment
Subjects must have measurable disease defined as at least 1 of the following (according to central laboratory results):
- Serum M-protein ≥1 g/dL
- Urine M-protein ≥200 mg/24 hours
- Serum free light chain (FLC) ≥10 mg/dL with abnormal ratio
- ≥1 bone lesion identifiable by radiograph, computed tomography, magnetic resonance imaging, or bone scintigraphy
- Eastern Cooperative Oncology Group Performance Status (ECOG PS) 0-2
- Subjects must be nonrefractory to bortezomib and had no progression during or within 60 days after completion of bortezomib
- Absolute neutrophil count (ANC) ≥1.5 × 10e9/L, hemoglobin (Hb) ≥9.0 g/dL, and platelet count ≥75.0 × 10e9/L independent of transfusion of red blood cells (RBC) or platelet concentrates and independent of granulocyte colony stimulating factor (G-CSF) or granulocyte macrophage colony stimulating factor (GM-CSF)
Exclusion Criteria:
- Systemic glucocorticoid therapy (prednisone >10 mg/day orally or equivalent) within the last 4 weeks prior to first dose, unless tapered and on a stable dose ≤10 mg/day for at least 1 week
- Subjects with known POEMS syndrome (polyneuropathy, organomegaly, endocrinopathy, monoclonal protein, and skin changes) or light chain (AL) amyloidosis
- Plasma cell leukemia
- Systemic anti-cancer therapy within 4 weeks prior to first dose
- Radiation therapy in the previous 4 weeks prior to first dose except if given for pain management and involves less than 10% of the bone marrow
- Prior treatment with radium-223 dichloride or any experimental radiopharmaceutical
- Congestive heart failure (New York Heart Association [NYHA] class III to IV), symptomatic cardiac ischemia, cardiomyopathy, clinically relevant ventricular arrhythmia, pericardial disease, unstable angina or myocardial infarct in the previous 6 months prior to first dose, left ventricular ejection fraction <40%
- Neuropathy ≥ Grade 2 or Grade 1 with pain
Sites / Locations
Arms of the Study
Arm 1
Arm 2
Arm 3
Arm 4
Arm 5
Experimental
Experimental
Experimental
Placebo Comparator
Experimental
Radium-223 dichloride [Phase 1, dose 1]
Radium-223 dichloride [Phase 1, dose 2]
Radium-223 dichloride [Phase 1, dose 3]
Placebo +SoC [Phase 2]
Radium-223 dichloride + SoC [Phase 2]
Phase 1: Radium-223 dichloride; 30 kiloBecquerel (kBq)/kg body weight (33 kBq/kg after implementation of National Institute of Standards and Technology [NIST] update) every 4 weeks for a total of 6 radium-223 dichloride doses plus SOC bortezomib/dexamethasone.
Phase 1: Radium-223 dichloride; 50 kBq/kg body weight (55 kBq/kg after implementation of NIST update) every 4 weeks for a total of 6 radium-223 dichloride doses plus SOC bortezomib/dexamethasone.
Phase 1: Radium-223 dichloride; 80 kBq/kg body weight (88 kBq/kg after implementation of NIST update) every 4 weeks for a total of 6 radium-223 dichloride doses plus SOC bortezomib/dexamethasone.
Phase 2: Matching placebo (isotonic saline) every 4 weeks for a total of 6 doses plus SoC (Standard of care) bortezomib/dexamethasone.
Phase 2: Phase 1b-selected dose of radium-223 dichloride every 4 weeks for 6 doses plus SOC bortezomib/dexamethasone