Based on preclinical data and the promising results being achieved with infusional 5-FU in colorectal and breast cancer, we investigated a weekly schedule of a 24-hour infusion of 5-FU plus folinic acid (HD-FU/FA) in patients failing to first-line chemotherapy and HD-FU/FA plus cisplatin (C) or plus cisplatin/epidoxorubicin (C/E) in chemo-naive patients with advanced gastric cancer. In all three trials the results achieved with the tested chemotherapy regimens indicated high activity and good tolerability. All three protocols were administered as outpatient treatment. With HD-FU/FA and overall response rate of 24% and a median survival time of 5 months was observed in 17 patients refractory to or relapsing after first-line chemotherapy. HD-FU/FA/C induced an overall response rate of 66% and a median survival time of 13 months. Of note was the high activity of this regimen in patients with malignant ascites. HD-FU/FA/C/E also proved to be an interesting regimen similar active as HD-FU/FA/C but it was subjectively less well tolerated. In patients with locally advanced disease the response rate was 90% (10/11), and in patients with distant metastases 50% (8/16).
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