Key clinical point: Trifluridine/tipiracil (FTD/TPI) showed promising anti-tumor activity with a manageable safety profile regardless of prior exposure to fluoropyrimidine therapy in patients with metastatic breast cancer (BC).
Major finding: The median durations of progression-free survival were 5.7 months and 9.4 months in patients with and without prior exposure to fluoropyrimidine therapy, respectively. Neutropenia (81.8%), fatigue (29.7%), anorexia (25.7%), and nausea (25.7%) were the most common all-grade treatment-related adverse events.
Study details: Findings are from a phase 2 study including 74 patients with metastatic BC with or without prior exposure to fluoropyrimidine therapy who received FTD/TPI.
Disclosures: This study was funded by a grant from the National Medical Research Council, Singapore. Some authors declared receiving research funding, honoraria, consulting fees, or travel support from or having other ties with various sources.
Source: Lim JSJ et al. Phase II study of trifluridine/tipiracil (FTD/TPI) in metastatic breast cancers with or without prior exposure to fluoropyrimidines. Eur J Cancer. 2023;113311 (Aug 25). doi: 10.1016/j.ejca.2023.113311