Trifluridine/Tipiracil plus Bevacizumab in Patients with Untreated Metastatic Colorectal Cancer Ineligible for Intensive Therapy: the Randomized TASCO1 Study.

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We designed an open-label, non-comparative phase II study to assess the safety and efficacy of first-line treatment with trifluridine/tipiracil plus bevacizumab (TT-B) and capecitabine plus bevacizumab (C-B) in untreated patients with unresectable metastatic colorectal cancer (mCRC) who were not candidates for combination with cytotoxic chemotherapies.From 29 April 2016 to 29 March 2017, 153 patients were randomly assigned (1:1) to either TT-B (n=77) or C-B (n=76). The primary endpoint was progression-free survival (PFS). The primary PFS analysis was performed after 100 events (radiological progression or death) were observed. Secondary endpoints included overall survival (OS), quality of life (QoL; QLQ-C30 and QLQ-CR29 questionnaires) and safety.Median duration of treatment was 7.8 [6.0;9.7] months and 6.2 [4.1;9.1] months in the TT-B and C-B groups, respectively. Median PFS was 9.2 [7.6;11.6] and 7.8 [5.5;10.1] months, respectively. Median OS was 18 [15.2;NA] and 16.2 [12.5;NA] months, respectively. QoL questionnaires showed no relevant changes over time for either treatment. Therapies were well tolerated. Patients receiving TT-B had more grade ≥3 neutropenia (47% vs. 5% with C-B). Patients receiving C-B had more grade ≥3 hand-foot syndrome (12% vs. 0% with TT-B) and grade ≥3 diarrhea (8% vs. 1% with TT-B), consistent with the known safety profiles of these agents.TT-B treatment showed promising clinical activity in untreated patients with unresectable mCRC ineligible for intensive therapy, with an acceptable safety profile and no clinically relevant changes in QoL.


Click here to read the full article @ Annals of oncology : official journal of the European Society for Medical Oncology

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