Abstract
Background
TAS-102 improves overall survival (OS) of patients with refractory colorectal cancer (CRC), resulting in median progression-free survival (PFS) of 2.0 months (RECOURSE trial). Subsequently, a combination of TAS-102 and bevacizumab was shown to extend median PFS by 3.7 months. However, approximately half of these patients experience grade 3/4 neutropenia. In this study, we evaluated whether biweekly TAS-102 and bevacizumab therapy has efficacy equal to that of conventional TAS-102 and bevacizumab therapy and whether it reduces adverse hematological effects.
Methods
This phase II, investigator-initiated, open-label, single-arm, multicenter study was conducted in Japan. Eligible patients had previously received first- and second-line chemotherapy for metastatic CRC. TAS-102 (35 mg/m2) was given twice daily on days 1–5 and days 15–19 in a 4-week cycle, and bevacizumab (5 mg/kg) was administered by intravenous infusion for 30 min every 2 weeks. The primary end point was progression-free survival (PFS), and secondary end points were time-to-treatment failure (TTF), response rate (RR), OS, and safety.
Results
44 patients with metastatic colorectal cancer were enrolled in this study. Median PFS was 4.6 months (95% confidence interval [95% CI] 3.6–5.3) and median OS was 10.5 months (95% CI 9.6–11.4). A partial response was observed in 2 patients (4.5%, 95% CI 0.4–16.0%). The most common adverse event above grade 3 was neutropenia (7 patients, 15.9%, 95% CI 7.6–29.7%).
Conclusions
Biweekly TAS-102 and bevacizumab therapy as third-line chemotherapy appears as effective as conventional TAS-102 and bevacizumab therapy, and this approach reduces adverse hematological effects.
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Acknowledgements
We thank all patients and co-workers for their participation and cooperation in the TAS-CC4 study.
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The authors received no financial support for the research, authorship, or publication of this article.
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Conception and design: YY, TY, KS, and KK. Acquisition of data: RO, YY, HM, and HK. Analysis and interpretation of data: RO, TY, and YY. Writing, review, and/or revision of the manuscript: TY, RO, and HM. Administrative, technical, or material support: TY and AM. Study supervision: KS, HY, KH, and KK. Other (recruitment of study subjects and oversight of study participants): HM, YY, TY, MT, CK, AF, HK, HS, RO, and AM.
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Suguru Hasegawa has received research funding from Taiho Pharmaceutical Industry and Takeda Pharmaceutical. Hidekazu Kuramochi has received scholarship donations from Taiho Pharmaceutical Industry and Chugai Pharmaceutical. The other authors declare that they have no competing interests.
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Matsuoka, H., Yamada, T., Ohta, R. et al. Biweekly TAS-102 and bevacizumab as third-line chemotherapy for advanced or recurrent colorectal cancer: a phase II, multicenter, clinical trial (TAS-CC4 study). Int J Clin Oncol 27, 1859–1866 (2022). https://doi.org/10.1007/s10147-022-02243-4
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DOI: https://doi.org/10.1007/s10147-022-02243-4