Abstract
Purpose
Treatment options for patients with relapsed and refractory multiple myeloma have improved since the introduction of immune-modulating agents such as lenalidomide and thalidomide. However, almost all patients relapse and suffer from an increasing amount of adverse events due to multiple lines of therapy that eventually lead to a reduced quality of life.
Methods
In this bicentric retrospective analysis, 58 patients who had been treated with either bendamustine monotherapy (62 % of the patients) or combined steroid therapy were included. Further inclusion criteria were at least relapsed disease. Patients had previously been treated with a mean of four lines of therapy (range 1–10). They received a median of three cycles of treatment. Dosage varied from 60 to 300 mg/m2 (median 120 mg/m2) and was administered intravenously on day 1 and 2 of a 28-day cycle.
Results
Observed toxicity was mild and most commonly led to hematological side effects such as thrombopenia and anemia. Response rates were as follows: no complete response, 20 % partial response, 39 % minimal response, 27 % stable disease and 14 % progressive disease. Median overall survival (OS) was 17 months. Median event-free survival was 7 months. Patients who had not received a concomitant steroid had a median OS of 17 months compared to 13 months median OS for patients who had received a concomitant steroid.
Conclusion
Bendamustine monotherapy is an effective treatment option for heavily pre-treated myeloma patients due to its favorable response rate and mild toxicity.
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All authors declare that no conflicts of interest exist. There is no conflict to study participants. There is no study sponsor.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Ethics approval for this retrospective study had been obtained according to the guidelines of the host institution.
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Stöhr, E., Schmeel, F.C., Schmeel, L.C. et al. Bendamustine in heavily pre-treated patients with relapsed or refractory multiple myeloma. J Cancer Res Clin Oncol 141, 2205–2212 (2015). https://doi.org/10.1007/s00432-015-2014-2
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DOI: https://doi.org/10.1007/s00432-015-2014-2