Conditions: Multiple Myeloma
Keywords: Multiple Myeloma Untreated multiple myeloma Bortezomib VELCADE Cyclophosphamide Dexamethasone Chemotherapy Remission therapy Induction therapy Stem Cell Transplantation
Allocation: NA | Intervention model: SINGLE_GROUP
Enrollment: 401
Healthy volunteers: no

Brief summary:
The purpose of this study is to evaluate the safety and effectiveness of bortezomib in combination with a standard regimen of cyclophosphamide and dexamethasone.

Detailed description:
This is open-label (both the participant and the investigator know what treatment participants will receive), prospective (participants are identified and then followed forward in time for the outcome of the study), multi-centre, and non-randomized (participants are assigned to different treatment groups by the investigator) study. The study will be conducted into 2 parts (Part 1 and Part 2). Approximately 400 participants will be enrolled (30 in Part 1 and 370 in Part 2). In Part 1 the optimum dose of cyclophosphamide will be evaluated and in Part 2 the selected dose of cyclophosphamide from Part 1 will be administered. Part 2 will include a screening period of a maximum of 14 days followed by chemotherapy (bortezomib, cyclophosphamide, and dexamethasone) of a maximum of three 21-day cycles. Safety will be evaluated by the assessment of adverse events, vital signs, physical examination, electrocardiogram, and clinical laboratory tests which will be monitored throughout the study.

Arms:
arm 1: Part 1 will be the dose titration part for cyclophosphamide. Participants will receive cyclophosphamide, bortezomib, and dexamethasone for 3 cycles. In Part 2, participants will receive cyclophosphamide (dose determined in Part 1) with pre-defined dose of bortezomib and dexamethasone for 3 cycles.

Interventions: intervention 1: Cyclophosphamide intervention 2: Bortezomib intervention 3: Dexamethasone
Intervention descriptions: intervention 1: In Part 1, cyclophosphamide with dose ranging from 900 to 1500 mg will be administered intravenously on Day 1 of each 21 day cycle for 3 cycles to determine optimal dose. In Part 2, optimal dose determined in Part 1 will be administered on Day 1 of each 21 day cycle for 3 cycles. intervention 2: Bortezomib 1.3 mg/m2 will be administered intravenously on Days 1,4,8, and 11 of each 21 day cycle for 3 cycles in both parts (Part 1 and Part 2). intervention 3: Participants will receive dexamethasone 40 mg orally or intravenously on Days 1, 2, 4, 5, 8, 9, 11, and 12 of each 21 day cycle for 3 cycles in both parts (Part 1 and Part 2).

Protocol document: