Abstract
Purpose
The aim of this study is to evaluate the efficacy and safety of genetically modified recombinant human IL-11 (mIL-11), using original IL-11 as an active control, in a multicenter randomized trial involving 88 cancer patients undergoing chemotherapy
Methods
Eighty-eight subjects who had platelets ≦75 × 109/L during the prior chemotherapy were randomized to the MR or RM group. Cohort MR consists of subcutaneous injection of mIL-11 (7.5 μg/kg/day) for 10 days, beginning 72 h after chemotherapy for a 21-day chemotherapy cycle (cycle-1) followed by that of recombinant human interleukin-11 (rhIL-11) (25 μg/kg/day) for another 10 days (cycle-2). Cohort RM represents the reverse sequence. Intent-to-treat populations of mIL-11 (n = 73) or rhIL-11 (n = 80) were analyzed to evaluate the safety.
Results
The incidence of drug-related adverse events of mIL-11 (32.9%) was lower than that of rhIL-11 (51.3%) (p = 0.033). There were no unexpected ≥grade-3 adverse events, and no subject developed antibodies to the mIL-11 protein. Sixty-two subjects were analyzed for efficacy by measuring average platelet levels. Both mIL-11 and rhIL-11 increased nadir platelet levels (62.6 ± 34.9 × 109/L for mIL-11 vs. 60.2 ± 31.7 × 109/L for rhIL-11) as compared with the untreated control group (41.2 ± 17.7 × 109/L) (p < 0.0001). There was no statistical difference in average platelet levels and platelet recovery rate between mIL-11 and rhIL-11.
Conclusions
This study shows that mIL-11 is well tolerated and has thrombopoietic activity equivalent to one third of the clinical dose of rhIL-11, indicating the potential of mIL-11 for use in the treatment of CIT.
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Conflict of interest
Seong-Hyun Ho, Jong-Mook Kim, Seung Shin Yu, and Sunyoung Kim are employees or shareholders of ViroMed Co., Ltd., and Shanshan Ma is an employee of Northland Biotech. The other authors declare no competing financial interests.
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Wu, S., Zhang, Y., Xu, L. et al. Multicenter, randomized study of genetically modified recombinant human interleukin-11 to prevent chemotherapy-induced thrombocytopenia in cancer patients receiving chemotherapy. Support Care Cancer 20, 1875–1884 (2012). https://doi.org/10.1007/s00520-011-1290-x
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DOI: https://doi.org/10.1007/s00520-011-1290-x