Abstract
A prospective clinical trial was undertaken in 121 patients with stomach cancer to compare immunochemotherapy with 5-fluorouracil and FT-207 combined with OK-432 or PS-K, immunostimulators, and plain chemotherapy with 5-fluororacil and FT-207. Of the 121 patients who received immunochemotherapy, 67 patients (group A) had undergone curative removal of the tumor. The other 54 patients had undergone noncurative tumor removal or had recurrence after non-curative tumor removal and they were divided into two groups (groups B and C) on the basis of lymphocyte reactivity induced with PHA. Although group A exhibited a significant increase in PHA-induced lymphocyte transformation and a trifling increase in lymphocyte counts, its survival rate within a 36 month period did not differ from that of the peer controls. Group B, composed of 21 patients showing improvement of PHA-induced lymphocyte transformation, significantly prolonged its survival compared to the peer controls. The survival of group C, composed of 33 patients showing a gradual drop in PHA-induced lymphocyte transformation, was not prolonged compared to the peer control patients; and they showed significant decreases in lymphocyte counts. The overall survival of group B and group C was not superior to that of the 48 peer controls.
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