Abstract
Background
We previously reported the HERBIS-4A phase II trial comparing S-1 plus cisplatin (SP) with capecitabine plus cisplatin (XP) in chemotherapy-naïve patients with HER2-negative advanced gastric cancer (GC). We performed a pooled analysis of HERBIS-4A and HERBIS-2, the phase II trial comparing SP with XP in HER2-negative recurrent GC patients with a recurrence-free interval after S-1 adjuvant therapy of ≥ 6 months.
Patients and methods
Patients were randomly assigned to receive either SP [S-1 (40–60 mg twice daily for 21 days) plus cisplatin (60 mg/m2 on day 8), every 5 weeks] or XP [capecitabine (1000 mg/m2 twice daily for 14 days) plus cisplatin (80 mg/m2 on day 1), every 3 weeks].
Results
In the pooled analysis, SP (n = 44–50) showed a longer progression-free survival [6.4 versus 5.1 months; hazard ratio (HR), 0.666; P = 0.062], overall survival (14.8 versus 10.6 months; HR, 0.695; P = 0.099), and time to treatment failure (4.6 versus 3.6 months; HR, 0.668; P = 0.045) as well as a higher disease control rate (86.4% versus 68.1%, P = 0.149) compared with XP (n = 47–51). A significant survival advantage for SP over XP was apparent in patients with a performance status of 0, a differentiated-type tumor histology, or a primary tumor localization to the upper portion of the stomach.
Conclusion
Our pooled analysis supports the use of SP in the first-line setting for patients with HER2-negative advanced or recurrent GC with a recurrence-free interval of ≥ 6 months.
Clinical trial registration
The HERBIS-2 trial was registered with UMIN-CTR as UMIN000006105.
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Acknowledgements
We thank all the patients, investigators, and medical staff at the participating institutions who contributed to this study.
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This research was funded by Osaka Clinical Study Supporting Organization.
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H.K. has received consulting fees from Bristol-Myers Squibb Co. Ltd., Eli Lilly Japan K.K., MSD K.K., Ono Pharmaceutical Co. Ltd., Daiichi-Sankyo Co. Ltd., and Taiho Pharmaceutical Co. Ltd; honoraria from Bristol-Myers Squibb Co. Ltd., AstraZeneca K.K., Bayer yakuhin Ltd., Eli Lilly Japan K.K., MSD K.K., Ono Pharmaceutical Co. Ltd., Chugai Pharmaceutical Co. Ltd., Daiichi Sankyo Co. Ltd., Takeda Pharmaceutical Co. Ltd., and Taiho Pharmaceutical Co. Ltd.; lecture fees from Bristol-Myers Squibb Co. Ltd., Eli Lilly Japan K.K., MSD K.K., Ono Pharmaceutical Co. Ltd., Chugai Pharmaceutical Co. Ltd., Takeda Pharmaceutical Co. Ltd., and Taiho Pharmaceutical Co., Ltd.; and research funding from Chugai Pharmaceutical Co. Ltd., Taiho Pharmaceutical Co. Ltd, and Eisai Co. Ltd. T. Tamura has received honoraria from Merck Serono Co. Ltd., speaker’s bureau fees from Daiichi Sankyo Co. Ltd., and research funding from Takeda Pharmaceutical Co. Ltd., Chugai Pharmaceutical Co. Ltd., and Taiho Pharmaceutical Co. Ltd. Y. Kurokawa has received lecture fees from Taiho Pharmaceutical Co. Ltd., Yakult Honsha, Ono Pharmaceutical Co. Ltd., MSD K.K., Daiichi Sankyo Co. Ltd., Takeda Pharmaceutical Co. Ltd., and Kaken Pharmaceutical, as well as research grants from Taiho Pharmaceutical Co. Ltd., Ono Pharmaceutical Co. Ltd., and MSD K.K. T. Satoh received research grants from Giliad; consulting fees from Daiichi Sankyo and and Takeda Pharmaceutical, Co. Ltd.; consulting fees, honoraria and research grants from Merck BioPharm, Bristol-Myers K.K., Taiho pharmaceutical, Elli lilly, MSD,, Sanofi, Bristol Myers-Squib; and departmental research grants, research grants, honoraria and consulting fees from Chugai Pharmaceutical Co. Ltd., Ono Pharmaceutical. Co. Ltd. and Yakult Honsha Co. Ltd. All remaining authors declare no conflicts of interest.
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Kawakami, H., Fujitani, K., Matsuyama, J. et al. Comparison of S-1–cisplatin every 5 weeks with capecitabine-cisplatin every 3 weeks for HER2-negative gastric cancer (recurrent after S-1 adjuvant therapy or chemotherapy-naïve advanced): pooled analysis of HERBIS-2 (OGSG 1103) and HERBIS-4A (OGSG 1105) trials. Int J Clin Oncol 25, 1635–1643 (2020). https://doi.org/10.1007/s10147-020-01711-z
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DOI: https://doi.org/10.1007/s10147-020-01711-z