Conditions: Multiple Myeloma
Keywords: refractory relapsed bortezomib AMD3100 plerixafor
Allocation: NON_RANDOMIZED | Intervention model: SINGLE_GROUP
Enrollment: 58
Healthy volunteers: no

Brief summary:
The purpose of this research study is to determine the safety of plerixafor and bortezomib, and the highest dose that can be given to people safely. Plerixafor appears to stop myeloma cells from attaching to bone marrow and has been used in other phase I studies for mobilization of stem cells for patients with myeloma and lymphoma. We have shown that the combination of plerixafor and bortezomib is very effective in killing myeloma cells in the laboratory more than the effect of each drug alone.

Detailed description:

Arms:
arm 1: Phase I Dose Level 1 patients received plerixafor 160ug/kg by injection on days 1-6 and bortezomib 1.0 mg/m2 intravenously days 3, 6, 10, and 13 of each 21 day cycle until disease progression or unacceptable toxicity. arm 2: Phase I Dose Level 2 patients received plerixafor 160ug/kg by injection on days 1-6 and bortezomib 1.3 mg/m2 intravenously days 3, 6, 10, and 13 of each 21 day cycle until disease progression or unacceptable toxicity. arm 3: Phase I Dose Level 3 patients received plerixafor 240ug/kg by injection on days 1-6 and bortezomib 1.0 mg/m2 intravenously days 3, 6, 10, and 13 of each 21 day cycle until disease progression or unacceptable toxicity. arm 4: Phase I Dose Level 4 patients received plerixafor 240ug/kg by injection on days 1-6 and bortezomib 1.3 mg/m2 intravenously days 3, 6, 10, and 13 of each 21 day cycle until disease progression or unacceptable toxicity. arm 5: Phase I Dose Level 5 patients received plerixafor 320ug/kg by injection on days 1-6 and bortezomib 1.3 mg/m2 intravenously days 3, 6, 10, and 13 of each 21 day cycle until disease progression or unacceptable toxicity. arm 6: Phase I Dose Level 5B patients received plerixafor 320ug/kg by injection on days 1, 2, 3, 6, 10, and 13 and bortezomib 1.3 mg/m2 intravenously days 3, 6, 10, and 13 of each 21 day cycle until disease progression or unacceptable toxicity. arm 7: Phase I Dose Level 6 patients received plerixafor 400ug/kg by injection on days 1, 2, 3, 6, 10, and 13 and bortezomib 1.3 mg/m2 intravenously days 3, 6, 10, and 13 of each 21 day cycle until disease progression or unacceptable toxicity. arm 8: All Phase I participants received plerixafor by injection and bortezomib intravenously according to the established dose escalation schedule. Participants were treated until disease progression or unacceptable toxicity. arm 9: All Phase I participants received plerixafor 320ug/kg by injection on days 1, 2, 3, 6, 10, and 13, bortezomib 1.3 mg/m2 intravenously or subcutaneously days 3, 6, 10, and 13, and dexamethasone 40mg orally days 3, 6, 10, and 13 of each 21 day cycle during induction. In maintenance, participants received plerixafor, bortezomib, and dexamethasone days 1, 8, 15, and 22 of each 35 day cycle. Participants were treated until disease progression or unacceptable toxicity.

Interventions: intervention 1: Plerixafor intervention 2: bortezomib intervention 3: Dexamethasone
Intervention descriptions: intervention 1: None intervention 2: None intervention 3: None

Protocol document: