Abstract
Purpose
Bendamustine is used in chronic lymphocytic leukemia (first-line) and indolent B-cell non-Hodgkin lymphoma (NHL) that progressed during/within 6 months of treatment with rituximab or a rituximab-containing regimen. This study was a postapproval commitment to investigate bendamustine’s effect on cardiac repolarization in treatment-naïve adults with advanced indolent NHL/mantle cell lymphoma (MCL).
Methods
In this multicenter, open-label, phase 3 study, patients received 6–8 28-day cycles of bendamustine (90 mg/m2, days 1 and 2) and rituximab (375 mg/m2, day 1). Exclusions included a history of cardiac conditions with potential for QT prolongation. The primary endpoint was change in Fridericia-corrected QT (QTcF; 3 electrocardiograms per time point) on day 2 of cycle 1, from just before infusion to end of infusion (immediately postinfusion, coinciding with maximum plasma concentration of bendamustine). Change 1 h postinfusion was also measured. Exploratory assessments included specific QTcF outlier analyses (new QTcF >500 ms, change >60 ms) and morphological changes.
Results
Of the 54 enrolled patients (mean age, 62.9 years), 53 received ≥1 dose; 49 completed ≥6 cycles. Mean QTcF change from baseline was 6.7 ms at end of infusion; no mean changes >20 ms were detected ≤1 h postinfusion. No patients met specific outlier criteria at end of infusion or 1 h postinfusion. No morphological changes were detected.
Conclusions
In this small treatment-naïve population with advanced NHL/MCL, bendamustine did not produce a clinically relevant increase in mean QTcF on the second infusion day. The potential for delayed effects on QT interval after 1 h was not evaluated.
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Acknowledgments
This research was sponsored and conducted by Teva Branded Pharmaceutical Products R&D, Inc., Frazer, PA.
Conflict of interest
John M. Burke has served as a consultant or on the scientific advisory board of Seattle Genetics, Dr. Reddy’s Laboratories, Incyte, Millenium, and Janssen; and conducted clinical research projects funded, in whole or in part, by Genentech. Richard H. C. van der Jagt has served as a consultant or on the scientific advisory board of Lundbeck and Teva; received honoraria from Roche, Celgene, and Novartis; and conducted clinical research projects funded, in whole or in part, by Lundbeck, Roche, Teva, Celgene, and CTI. Ian W. Finn has conducted clinical research projects funded, in whole or in part, by Teva. Joel Morganroth has served as a consultant or on the scientific advisory board of ERT, and has stock ownership in ERT. Mihaela C. Munteanu and Ling Chen are employees of and have stock ownership in Teva. David MacDonald has served as a consultant or on the scientific advisory board of Lundbeck Canada and Roche. Michael D. Craig declares that he has no conflict of interest.
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Burke, J.M., van der Jagt, R.H.C., Flinn, I.W. et al. Effect of bendamustine in combination with rituximab on QT interval duration in patients with advanced de novo indolent non-Hodgkin or mantle cell lymphoma. Cancer Chemother Pharmacol 76, 211–216 (2015). https://doi.org/10.1007/s00280-015-2776-x
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DOI: https://doi.org/10.1007/s00280-015-2776-x