A combination of gemcitabine and 5-fluorouracil in advanced pancreatic cancer, a report from the Italian Group for the Study of Digestive Tract Cancer (GISCAD)

In a randomized clinical trial, gemcitabine (GEM) was more effective than 5 -fluorouracil (5-FU) in advanced pancreatic cancer patients. GEM and 5-FU h ave different mechanisms of action and their combination, from a theoretica l point of view, could result in a higher activity. To test activity and fe asibility of such a combination, a multi-institutional phase II study was i nitiated in November 1996 by the Italian Group for the study of Digestive T ract Cancer (GISCAD). Primary objectives of this study were to determine th e activity in terms of response rate and clinical benefit, while the second ary objective was toxicity. According to the optimal two-stage phase II des ign, 54 patients were enrolled. Schedule was: GEM 1000 mg m(-2) intravenous (i.v.), and 5-FU 600 mg m(-2) bolus i.v. weekly for 3 weeks out of every 4 . All the 54 patients were symptomatic (pain, weight loss, dyspepsia). A cl inical benefit was obtained in 28 patients (51%) (95% confidence interval ( CI) 38-64%). Two patients achieved a partial response and 34 a stable disea se. Median survival for all the patients was 7 months. Side-effects were mi ld: no gastrointestinal or haematological grade 3-4 toxicity (WHO) were rec orded. We observed only six episodes of grade 2 (WHO) leukopenia and seven episodes of thrombocytopenia. Although the non-randomized design of this st udy suggests caution in the interpretation of these data, in consideration of the low incidence of toxicity and the favourable results obtained in ter ms of clinical benefit, it may be worthwhile to test more active schedules of 5-FU (continuous infusion) in combination with gemcitabine.