[Two regimens of combined 5'-deoxy-5-fluorouridine and cisplatin showing different dose intensities--investigation...

Patients with inoperable gastric cancer were given either of two regimens of combined 5'-deoxy-5-fluorouridine and cisplatin with different dose intensities. The results were compared based on ratios of the actual and the scheduled total doses of the regimens [relative performance (RP)]. The overall response rates and survival curves between the regimens showed no differences, but the incidences of severe adverse drug reactions was higher with regimen A, which had a higher dose intensity. Furthermore, survivals with regimen A were no different between the responding and non-responding patients, whereas the survivals of responding patients under regimen B were significantly longer than those of non-responding patients. Average RP were 0.87 with regimen A and 0.93 with regimen B. The mean RP of responding and non-responding patients were 0.94 and 0.84, respectively, with regimen A, and 0.99 and 0.89 with regimen B. Regarding survivals in both the RP = 1.0 and the RP < 1.0 groups, no difference was observed with regimen A. However, with regimen B, the RP = 1.0 group exhibited significantly better survival curves. Furthermore, survivals of the RP = 1.0 group under regimen B were much more favorable than in the RP = 1.0 group under regimen A. The above findings show that a regimen with an appropriate dose intensity has a favorable survival effect on patients.