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A Phase i dose-escalation study of third-line regorafenib with trifluridine/tipiracil in metastatic colorectal cancer

Markus Moehler*, Maurice Michel, Alexander Stein, Joerg Trojan, Jens Marquardt, Joseph Tintelnot, Oliver Waidmann, Arndt Weinmann, Marcus Alexander Woerns, Helge Schroeder, Martin Maenz, Friedrich Foerster

*Corresponding author for this work

Abstract

Aim: To determine a recommended Phase II dose of the oral fluoropyrimidine trifluridine/tipiracil (FTD/TPI) combined with the multi-kinase inhibitor regorafenib (REG) in refractory metastatic colorectal cancer patients. Materials & methods: A conventional 3 + 3 dose finding design was used. FTD/TPI was administered on days 1-5 and 8-12 of a 28-day cycle, REG on days 2-22. Two dose levels were used: FTD/TPI 25 mg/m2 b.i.d. + REG 120 mg/d, then escalated to FTD/TPI 35 mg/m2 b.i.d. + REG 120 mg/d. Results: In total, 12 patients were treated at two dose levels. Three dose-limiting toxicities were observed; all were grade 3 hypertension causally attributed to REG. Recommended Phase II dose is FTD/TPI 25 mg/m2 b.i.d. + REG 120 mg/d. Median progression-free survival was 3.81 months (95% CI: 1.51-5.29), median OS 11.1 months (95% CI: 2.3-18.2). Conclusion: The combination of REG and FTD/TPI is feasible and safe. Efficacy signals exceed that of the single agents at acceptable toxicity levels and are clinically meaningful.

Original languageEnglish
JournalFuture Oncology
Volume17
Issue number25
Pages (from-to)3309-3319
Number of pages11
ISSN1479-6694
DOIs
Publication statusPublished - 09.2021

Funding

The study was supported by a grant from B Vital GmbH. M Michel was supported by the Clinician Scientist Fellowship ‘Else Kröner Research College: 2018 Kolleg.05’. M Moehler reports a scientific grant from Bayer for his institution personal fees, as well honoraria and travel support by Bayer, Taiho and Servier. A Stein received institutional research funding and honoraria for advisory boards or lectures from Servier. J Trojan received honoraria for talks and advisory board role from Bayer and Servier. J Marquardt received honoraria and/or travel expenses from Bayer. O Waidmann received honoraria for advisory boards from Servier and Bayer, and honoraria for lectures from Bayer. M-A Woerns received honoraria and/or travel expenses from Bayer. F Foerster collaborates with Bayer in scientific pursuits. M Michel, J Tintelnot, A Weinmann, H Schroeder and M Maenz declare no conflict of interest.The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript apart from those disclosed.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

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