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Phase 2 study of romiplostim in patients with low- or intermediate-risk myelodysplastic syndrome receiving azacitidine therapy
Phase 2 study of romiplostim in patients with low- or intermediate-risk myelodysplastic syndrome receiving azacitidine therapy BLOOD Kantarjian, H. M., Giles, F. J., Greenberg, P. L., Paquette, R. L., Wang, E. S., Gabrilove, J. L., Garcia-Manero, G., Hu, K., Franklin, J. L., Berger, D. P. 2010; 116 (17): 3163-3170Abstract
We evaluated the efficacy and safety of romiplostim, a thrombopoietin mimetic, in patients with low- or intermediate-risk myelodysplastic syndromes (MDS) receiving azacitidine therapy. Forty patients with low- or intermediate-risk MDS were stratified by baseline platelet counts (< 50 vs = 50 × 10(9)/L) and randomized to romiplostim 500 µg or 750 µg or placebo subcutaneously once weekly during 4 cycles of azacitidine. The primary endpoint was the incidence of clinically significant thrombocytopenic events, defined by grade 3 or 4 thrombocytopenia starting on day 15 of the first cycle or platelet transfusion at any time during the 4-cycle treatment period. No formal hypothesis testing was planned. The incidence of clinically significant thrombocytopenic events in patients receiving romiplostim 500 µg, romiplostim 750 µg, or placebo was 62%, 71%, and 85%, respectively. The incidence of platelet transfusions was 46%, 36%, and 69%, respectively. These differences were not statistically significant with the small numbers in each group. Romiplostim 750 µg significantly raised median platelet counts during cycle 3 on day 1 (P = .0373) and at the nadir (P = .0035) compared with placebo. Grade 3 rash and arthralgia each were reported in 1 romiplostim-treated patient (4%). This study suggests romiplostim may provide clinical benefits in MDS patients during azacitidine therapy.
View details for DOI 10.1182/blood-2010-03-274753
View details for Web of Science ID 000283583700011
View details for PubMedID 20631375
View details for PubMedCentralID PMC3324162