Background: Preoperative chemoradiotherapy (CRT) with 5-FU has been widely used to improve local control of disease and to preserve anal sphincter in the treatment of rectal cancer. UFT and S-1 as oral dihydropyrimidi...Background: Preoperative chemoradiotherapy (CRT) with 5-FU has been widely used to improve local control of disease and to preserve anal sphincter in the treatment of rectal cancer. UFT and S-1 as oral dihydropyrimidine dehydrogenase (DPD)-inhibitory fluoropyrimidines enhance the therapeutic effect of 5-FU by modulating its metabolic pathways. The purpose of this study was to evaluate the efficacy and toxicity of CRT using UFT versus S-1 in patients with locally advanced rectal cancer. Methods: Fifty-nine patients who received preoperative CRT (40 Gy radiotherapy) were randomly assigned to either UFT or S-1 groups. UFT and S-1 were administered during the radiotherapy course. Response to CRT was determined using a histopathologic examination and RECIST of surgically resected specimens and classified as responders (CR, PR and grade 2, 3) or nonresponders (SD, PD and grade 0, 1). Results: All patients were randomly allocated to S-1 group (n = 30) or UFT group (n = 29). Pathological response rate (Grade2 and Grade3) was 57% in the S-1 group and 45% in the UFT group (p = 0.36). Pathological complete response (CR) rate (Grade3) was 7% in the S-1 group and 4% in the UFT group (p = 0.98). There was no statistically significant difference between the two groups in regard to the response rate of RECIST (p = 0.52). There was no statistically significant difference between the groups based on the downstaging rate, resection of tumor, sphincter preservation and marginal invasion. The incidence of Grade 3 diarrhea was significantly more frequent in the S-1 group (7%) compared with the UFT group (0%) (p = 0.02). Conclusion: The results supported the conclusion that CRT using UFT or S-1 is effective and feasible for patients with locally advanced rectal cancer.展开更多
Background: This study evaluated the tolerability and efficacy of intermittent oxaliplatin treatment based on mFOLFOX6 using oral uracil-tegafur(UFT) and leucovorin(LV) maintenance therapy in the treatment of elderly ...Background: This study evaluated the tolerability and efficacy of intermittent oxaliplatin treatment based on mFOLFOX6 using oral uracil-tegafur(UFT) and leucovorin(LV) maintenance therapy in the treatment of elderly patients with advanced colorectal cancer. Methods: Ten non-elderly patients (70 years) with advanced/recurrent colorectal cancer were enrolled in this prospective, multicenter cooperative group clinical trial. The mFOLFOX6 regimen was administered for eight cycles with maintenance therapy with oral UFT/LV treatment until progression. In cases with disease progression, mFOLFOX6 was reintroduced. Results: Grade 2 peripheral neuropathy was noted in 30.0% and 25.0% of the elderly and non-elderly patients, respectively. The observed time to treatment failure (TTF) was 6.3 months in the elderly patients and 6.4 months in the non-elderly patients. The disease control rate was 83.3% in each group. Conclusion: Our new stop-and-go strategy using oral UFT/LV is well-tolerated and effective even in elderly patients.展开更多
文摘Background: Preoperative chemoradiotherapy (CRT) with 5-FU has been widely used to improve local control of disease and to preserve anal sphincter in the treatment of rectal cancer. UFT and S-1 as oral dihydropyrimidine dehydrogenase (DPD)-inhibitory fluoropyrimidines enhance the therapeutic effect of 5-FU by modulating its metabolic pathways. The purpose of this study was to evaluate the efficacy and toxicity of CRT using UFT versus S-1 in patients with locally advanced rectal cancer. Methods: Fifty-nine patients who received preoperative CRT (40 Gy radiotherapy) were randomly assigned to either UFT or S-1 groups. UFT and S-1 were administered during the radiotherapy course. Response to CRT was determined using a histopathologic examination and RECIST of surgically resected specimens and classified as responders (CR, PR and grade 2, 3) or nonresponders (SD, PD and grade 0, 1). Results: All patients were randomly allocated to S-1 group (n = 30) or UFT group (n = 29). Pathological response rate (Grade2 and Grade3) was 57% in the S-1 group and 45% in the UFT group (p = 0.36). Pathological complete response (CR) rate (Grade3) was 7% in the S-1 group and 4% in the UFT group (p = 0.98). There was no statistically significant difference between the two groups in regard to the response rate of RECIST (p = 0.52). There was no statistically significant difference between the groups based on the downstaging rate, resection of tumor, sphincter preservation and marginal invasion. The incidence of Grade 3 diarrhea was significantly more frequent in the S-1 group (7%) compared with the UFT group (0%) (p = 0.02). Conclusion: The results supported the conclusion that CRT using UFT or S-1 is effective and feasible for patients with locally advanced rectal cancer.
文摘Background: This study evaluated the tolerability and efficacy of intermittent oxaliplatin treatment based on mFOLFOX6 using oral uracil-tegafur(UFT) and leucovorin(LV) maintenance therapy in the treatment of elderly patients with advanced colorectal cancer. Methods: Ten non-elderly patients (70 years) with advanced/recurrent colorectal cancer were enrolled in this prospective, multicenter cooperative group clinical trial. The mFOLFOX6 regimen was administered for eight cycles with maintenance therapy with oral UFT/LV treatment until progression. In cases with disease progression, mFOLFOX6 was reintroduced. Results: Grade 2 peripheral neuropathy was noted in 30.0% and 25.0% of the elderly and non-elderly patients, respectively. The observed time to treatment failure (TTF) was 6.3 months in the elderly patients and 6.4 months in the non-elderly patients. The disease control rate was 83.3% in each group. Conclusion: Our new stop-and-go strategy using oral UFT/LV is well-tolerated and effective even in elderly patients.
