Abstract
Background
We conducted a phase II trial to evaluate the efficacy and safety of preoperative chemotherapy with docetaxel (DTX) plus S-1 for resectable advanced gastric cancer.
Patients and Methods
A total of 47 patients from 14 centers were centrally registered. Patients received DTX (35 mg/m2) on days 1 and 15, and daily oral administration of S-1 (80 mg/m2/day) for days 1–14 every 4 weeks for two courses, followed by gastrectomy with D2 lymphadenectomy. The primary endpoint was pathological response rate (pRR). This study was registered in the UMIN clinical trial registry (UMIN000000875).
Results
The primary endpoint pRR was 47 % (90 % confidence interval (CI), 34–60 %; p < 0.0001). The response rate to preoperative chemotherapy using Response Evaluation Criteria in Solid Tumors (RECIST) was 34 %. Forty-six patients (98 %) underwent surgery, and curative resection was performed in 44 patients. Thirty-seven patients completed the protocol treatment. The most common toxicities of neoadjuvant chemotherapy were grade 3/4 neutropenia (42 %), febrile neutropenia (4 %), grade 2 anorexia (21 %), and fatigue (15 %). Treatment-related death and operative mortality was not observed in this study.
Conclusions
The combination of docetaxel and S-1 was well tolerated. This is promising as a preoperative chemotherapy regimen for patients with potentially resectable advanced gastric cancer.
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Acknowledgment
We thank all the patients and families who participated in this trial. We are indebted to the physicians and all the clinical study teams at the participating institutions. The following 14 surgical departments participated in the trial: Kumamoto University, National Kyushu Cancer Center, Saiseikai Fukuoka General Hospital, Kyushu University, Hiroshima Red Cross Atomic-bomb Survivors Hospital, Hiroshima City Asa Hospital, Gifu University, Saiseikai Yahata General Hospital, National Kyushu Medical Center, Kyushu Central Hospital, Fukuoka City Hospital, Matsuyama Red Cross Hospital, Oita Red Cross Hospital, and Saiseikai Kumamoto Hospital. We also thank Ms. Satomi Abe for her excellent secretarial assistance at the data center of Kyushu University. This work was supported in part by a Grant-in-Aid from the Ministry of Education, Culture, Sports, Science and Technology of Japan.
Conflict of interest
Yoshihiko Maehara is partly supported by research funding from Sanofi-Aventis and Taiho Pharmaceutical Company. All remaining authors have no conflicts of interest to declare.
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Oki, E., Emi, Y., Kusumoto, T. et al. Phase II Study of Docetaxel and S-1 (DS) as Neoadjuvant Chemotherapy for Clinical Stage III Resectable Gastric Cancer. Ann Surg Oncol 21, 2340–2346 (2014). https://doi.org/10.1245/s10434-014-3594-9
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DOI: https://doi.org/10.1245/s10434-014-3594-9