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Lookup NU author(s): Professor Graham Jackson
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Proteasome inhibition is a novel approach to treating malignancy, and bortezomib is the first proteasome inhibitor in this class to be approved for clinical use. In preclinical studies, bortezomib caused cell cycle arrest and apoptosis in myeloma and lymphoma cell lines as well as in other neoplastic cell types. Phase I clinical trials established an optimal dosing strategy and demonstrated a manageable toxicity profile. Cyclical thrombocytopenia and peripheral neuropathy, which generally abate after cessation of treatment, are the most clinically significant toxicities. Two phase II trials, SUMMIT and CREST, demonstrated impressive activity with bortezomib 1.3 mg/m(2) monotherapy in relapsed and refractory myeloma, with an impressive 35% response rate (complete + partial + minimal responses) in SUMMIT and a 50% response rate in CREST, using the rigorous European Group for Blood and Marrow Transplantation criteria. A recently completed phase III trial showed the significant clinical benefits of bortezomib over high-dose dexamethasone in patients with relapsed myeloma. Results of ongoing trials with bortezomib in the first-tine treatment of myeloma have been extremely encouraging and have demonstrated the benefit of using bortezomib as part of an induction regimen prior to stem cell transplantation. Importantly, two clinical trials with bortezomib as monotherapy in refractory non-Hodgkin's lymphoma have shown impressive response rates, particularly in aggressive mantle cell lymphoma. (C) 2005 Elsevier Ltd. All rights reserved.
Author(s): Jackson G, Einsele H, Moreau P, San Miguel J
Publication type: Review
Publication status: Published
Journal: Cancer Treatment Reviews
Year: 2005
Volume: 31
Issue: 8
Pages: 591-602
ISSN (print): 0305-7372
ISSN (electronic): 1532-1967
URL: http://dx.doi.org/10.1016/j.ctrv.2005.10.001
DOI: 10.1016/j.ctrv.2005.10.001