A Pilot Study of Combination Therapy With VELCADE, Doxil, and Dexamethasone (VDd) in Multiple Myeloma
Multiple myeloma remains a non-curable disease. Combination therapies such as VAD have been
effective, with partial response rates in ~40-60% range and tolerable toxicity. A recent
study showed that substituting Doxil for Doxorubicin in a regimen similar to VAD (DVd)
resulted in an improved toxicity profile and similar efficacy. The most active agents in VAD
(and presumably in DVd) are Doxorubicin (or Doxil) and Dexamethasone, while Vincristine adds
little, if at all to the efficacy of these regimen(s). One of the new active agents in
multiple myeloma is VELCADE (bortezomib, formerly known as VELCADE). This molecule has a
novel mechanism of action by specifically inhibiting the proteasome. A recently reported
Phase II trial showed that VELCADE as a single agent induced at least minimal responses
(i.e. > 25% reduction in monoclonal protein) in 35% of patients and at least a stabilization
of the disease in 59% of patients with relapsed/refractory multiple myeloma using strict
SWOG criteria. An additional 18% responded when Dexamethasone was added to VELCADE.
Pre-clinical observations showed that the addition of VELCADE to other chemotherapeutic
agents, such as doxorubicin, enhances cytotoxicity of multiple myeloma cells. Preliminary
results from Phase I study of combination of VELCADE with Doxil showed 60% response rate
(i.e. > partial response) with acceptable toxicity. In this study we propose to combine
three active agents, i.e. Doxil, Dexamethasone (two most active agents from DVd), and
VELCADE. The ultimate goal is to show that this combination of drugs is more efficacious
than VAD or VELCADE with either Dexamethasone or Doxil and without additional toxicity.
Interventional
Allocation: Non-Randomized, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
Estimate an overall response rate to combination therapy with VELCADE, Doxil, and Dexamethasone, defined as at least partial response (PR), i.e. > 50% reduction in serum monoclonal protein and/or >90% reduction in Bence-Jones protein by EBMT criteria.
Multiple myeloma remains a non-curable disease. Combination therapies such as VAD have been effective, with partial response rates in ~40-60% range and tolerable toxicity. The purpose of this study is to see if this combination is more effective
6 months
Yes
Andrzej J Jakubowiak, MD, PhD
Principal Investigator
University of Michigan Cancer Center
United States: Institutional Review Board
UMCC 2004.003
NCT00135187
July 2004
December 2007
Name | Location |
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University of Michigan Cancer Center | Ann Arbor, Michigan 48109 |