Inproceedings: an article in a conference proceedings.
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A multicenter phase II study (SAKK 36/06) of single-agent everolimus (RAD001) in patients with relapsed or refractory mantle cell lymphoma
Title of the conference
Jahrestagung der Deutschen, Österreichischen und Schweizerischen Gesellschaften für Hämatologie und Onkologie
Basel, Schweiz, 30. September-4. Oktober, 2011
Publication type : Meeting Abstract
Introduction: Mantle cell lymphoma (MCL) accounts for 6% of all B-cell lymphomas and is in most cases an incurable disease. It is characterized by the translocation t(11;14) leading to Cyclin D1 over-expression. Cyclin D1 is downstream of the mammalian target of rapamycin (mTOR) threonine kinase and can be effectively blocked by mTOR inhibitors. We set out to define the single agent activity of the orally available mTOR inhibitor everolimus in a prospective, multicentre trial in patients with relapsed or refractory MCL (NCT00516412).Methods: Eligible patients with confirmed relapsed or refractory MCL received everolimus 10 mg for 28 days (one cycle) for a total of 6 cycles or until disease progression. The primary endpoint was the best objective response (OR) with adverse reactions, time to progression (TTP), time to treatment failure, response duration and molecular response as secondary endpoints.Results: A total of 36 patients with 35 evaluable patients at a median age of 69 years (range 40 to 85 years) from 19 centers were enrolled between August 2007 and January 2010. Treatment was generally well tolerated with anemia (11%), thrombocytopenia (11%), neutropenia (8%), diarrhea (3%) and fatigue (3%) being the most frequent complications of CTC grade 3 or higher. The OR rate was 20% (95% CI: 8-37%) with 2 complete remissions (CR) and 5 partial response (PR), stable disease (SD) 48% and progression disease (PD) 28%. At a median follow-up of 6 months, TTP was 5.45 months (95% CI: 2.8-8.2 months) for the entire population and 10.6 months for the 18 patients receiving 6 or more cycles of treatment. Three patients achieved a lasting complete molecular response when assessed in the peripheral blood.Conclusion: This study demonstrates that single agent everolimus is well tolerated and has anti-lymphoma activity including lasting molecular responses. Further studies of everolimus either in combination with chemotherapy or as single agent for maintenance treatment are warranted in MCL.
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