Abstract
Purpose
We conducted a phase II study to evaluate the efficacy and safety of a triplet regimen of docetaxel, cisplatin, and S-1 in patients with unresectable or recurrent gastric cancer.
Methods
Docetaxel (40 mg/m2) and cisplatin (70 or 60 mg/m2) were given on day 1 of a 28-day cycle. S-1 (40 mg/m2) was given twice daily on days 1–14. Treatment with this regimen was continued for a maximum of 6 cycles. Subsequently, patients with no disease progression received a combination of docetaxel and S-1.
Results
Fifty-nine patients were enrolled. The median number of administered cycles was 8 (range, 1–25). Because some patients had serious myelosuppression and renal dysfunction with 70 mg/m2 of cisplatin, dose of cisplatin was reduced to 60 mg/m2 after 19 patients had been treated. Common severe toxic effects of grade 3 or 4 were leukocytopenia (44%), neutropenia (72%), anemia (15%), and febrile neutropenia (14%). The overall response rate of this group was 81% (95% confidence interval (CI), 71–91%). The median overall survival and progression-free survival were 18.5 (95% CI, 15.6–21.5) and 8.7 (95% CI, 6.7–10.7) months, respectively.
Conclusions
Triplet of docetaxel, cisplatin, and S-1 is a well-tolerated and highly active regimen for advanced or recurrent gastric cancer. A 60 mg/m2 of cisplatin is as effective as 70 mg/m2 of cisplatin.
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Acknowledgments
The Authors thank Nobutaka Samejima, Satoshi Matsumoto and Ryouta Seto for their helpful advices.
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This study has been registered with UMIN Clinical Trials Registry (UMIN-CTR), number UMIN000001119.
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Koizumi, W., Nakayama, N., Tanabe, S. et al. A multicenter phase II study of combined chemotherapy with docetaxel, cisplatin, and S-1 in patients with unresectable or recurrent gastric cancer (KDOG 0601). Cancer Chemother Pharmacol 69, 407–413 (2012). https://doi.org/10.1007/s00280-011-1701-1
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DOI: https://doi.org/10.1007/s00280-011-1701-1