Abstract
Maintenance is one form of long-term therapies in multiple myeloma (MM). Lenalidomide and bortezomib are two commonly used options. The role of maintenance in patients not undergoing transplant remains unclear. A total of 248 newly diagnosed MM patients who received over 180 days of any standard-of-care induction therapy and did not receive autologous stem cell transplantation were included. Patients either receive lenalidomide, bortezomib or no maintenance. Patterns of usage, survival benefit, discontinuation status were analyzed. 93, 99 and 56 patients received no, lenalidomide (Len) and bortezomib (Bor) maintenance respectively. Patients receiving Bor had a higher incidence of traditional high-risk cytogenetics (14.0% (No) vs 14.1% (Len) vs 41.1% (Bor), P < 0.001). Len maintenance conferred a superior progression-free survival (PFS) and overall survival (OS) compared to no maintenance (median PFS, 60.1 vs 26.9 months, P = 0.003; median OS, NR vs 56.7 months, P = 0.046), with a near independent impact on PFS (adjusted HR 0.580, P = 0.058). The PFS and OS benefit of Len maintenance was seen in subgroups of ISS stage I/II, traditional standard-risk cytogenetics, and pre-maintenance < CR. Bor maintenance did not confer PFS or OS benefit for the entire cohort, but improved OS in patients with pre-maintenance < CR. Discontinuation due to toxicity was recorded in 11.1% and 8.9% of patients receiving Len or Bor maintenance respectively. Our study supports lenalidomide maintenance as the standard-of-care in MM patients not undergoing transplant. Further studies are warranted for bortezomib maintenance in the non-transplant setting, and better maintenance strategy is needed for patients with adverse prognostic factors.
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The data that support the findings of this study are available from the corresponding author upon reasonable request.
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Acknowledgements
This study was supported by Natural Science Foundation of Shanghai (Grant No. 22ZR1411400).
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Peng Liu and Tianhong Xu designed and conceived the study. Tianhong Xu analyzed, interpreted the data and drafted the manuscript. Tianhong Xu, Yang Yang, Jing Li, Jiadai Xu, Wenjing Wang, Yawen Wang, Aziguli Maihemaiti, Liang Ren, Tianwei Lan, Chi Zhou, Panpan Li and Pu Wang collected and reviewed the data. Peng Liu approved the final draft of the paper.
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This study was approved by the ethics committee of Zhongshan Hospital (B2017-031R). All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2008 (5).
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Xu, T., Yang, Y., Li, J. et al. Real world outcomes of lenalidomide or bortezomib maintenance in patients with multiple myeloma not undergoing stem cell transplantation. Ann Hematol 102, 1171–1184 (2023). https://doi.org/10.1007/s00277-023-05148-y
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DOI: https://doi.org/10.1007/s00277-023-05148-y