Singer, H. (H.)
- Publications
- item.page.relationships.isContributorAdvisorOfPublication
- item.page.relationships.isContributorOfPublication
Search Results
Now showing 1 - 1 of 1
- Phase II Clinical and Pharmacokinetic Study of Plitidepsin 3-Hour Infusion Every Two Weeks Alone or with Dexamethasone in Relapsed and Refractory Multiple Myeloma(American Association for Cancer Research, 2010) Bladé, J. (Joan); Corrado, C. (C.); García-Sanz, R. (Ramón); Extremera, S. (S.); Mitsiades, C.S. (Constantine S.); Mateos, M.V. (María Victoria); Cibeira, M. (M.T.); Singer, H. (H.); Anderson, K.C. (K.C.); Lahuerta, J.J. (Juan José); Richardson, P.G. (Paul G.); Oriol, A. (Albert); Rubia, J. (Javier) de la; Prosper-Cardoso, F. (Felipe); Szyldergemajn, S. (Sergio); San-Miguel, J.F. (Jesús F.)Purpose: This trial evaluated the antitumor activity and safety of the marine-derived cyclodepsipeptide plitidepsin in patients with relapsed/refractory multiple myeloma. Experimental Design: This was a prospective, multicenter, open-label, single-arm, phase II trial with plitidepsin at 5 mg/m2 as a 3-hour i.v. infusion every two weeks. The protocol was amended to allow patients with suboptimal response to single-agent plitidepsin to add 20 mg/day on days 1 to 4 of oral dexamethasone every two weeks. Results: Fifty-one patients started treatment with plitidepsin and 47 were evaluable for efficacy. The overall response rate (complete response plus partial response plus minimal response) was 13% with plitidepsin alone and 22% in the cohort of patients with the addition of dexamethasone (n = 19, 18 evaluable). Both plitidepsin alone and with dexamethasone were feasible and well tolerated. Anemia (29%) and thrombocytopenia (18%) were the most frequent grade 3/4 hematologic toxicities. Fatigue (16%), muscular toxicity (6%), and transient alanine aminotransferase/aspartate aminotransferase (27%) and creatine phosphokinase (23%) increases were the most relevant nonhematologic side effects. A prolonged plasma half-life was observed in responding patients as compared with nonresponding patients (P = 0.009). Conclusions: Single-agent plitidepsin has limited but reproducible activity in relapsed/refractory multiple myeloma patients. Activity observed after dexamethasone addition merits further study. Both regimens were well tolerated in this heavily pretreated population.