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Furtado M.,Derriford Hospital PlymouthUK | Johnson R.,St James Institute Of Oncology Leedsuk | Kruger A.,Royal Cornwall Hospital TruroUK | Turner D.,Torbay Hospital Torbay UK | Rule S.,Derriford Hospital PlymouthUK
British Journal of Haematology | Year: 2014

The proteasome inhibitor, bortezomib, potentially increases cell sensitivity to chemotherapy. This study was performed to determine the overall response rate (ORR), overall survival (OS), progression-free survival (PFS) and toxicity of CHOP (cyclophosphamide, doxorubicin, vincristine and prednisolone) compared to CHOP + bortezomib chemotherapy in mantle cell lymphoma (MCL) patients at first relapse. Forty-six patients were randomly assigned to standard dose CHOP ± bortezomib 1·6 mg/m2 given on a 21-d cycle for up to eight cycles of treatment. Median age was 71 years (CHOP arm) and 69 years (CHOP-bortezomib arm). Median Eastern Cooperative Oncology Group performance status was 1 (CHOP) and 0 (CHOP-bortezomib) with 65% and 52%, respectively, having a disease stage of IV. ORR was 47·8% (CHOP) and 82·6% (CHOP-bortezomib). Complete response rate was 21·7% (CHOP) vs. 34·8% (CHOP-bortezomib); partial response rate was 26·1% (CHOP) vs. 47·8% (CHOP-bortezomib). Median OS was 11·8 months (CHOP) and 35·6 months (CHOP-bortezomib) (P = 0·01, Hazard ratio [HR] 0·37 [95% confidence interval (CI) 0·16-0·83)] and there was a non-significant improvement in PFS: 8·1 months (CHOP) and 16·5 months (CHOP-bortezomib) [P = 0·12, HR 0·60 (95% CI 0·31-1·15)]. Severe (≥grade 3) sensory neuropathy was similar in both arms (4·3% CHOP vs. 6·5% CHOP-bortezomib). We conclude that the addition of bortezomib to CHOP chemotherapy for relapsed MCL significantly improves outcome with a manageable increase in toxicity. © 2014 John Wiley & Sons Ltd.

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