Postoperative adjuvant immunochemotherapy with mitomycin C, futraful and PSK for gastric cancer. An analysis of data on 579 patients followed for five years

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Abstract
In order to evaluate the combination of immunochemotherapy with mitomycin C (MMC), futraful (FT) and PSK, as an adjuvant to surgery for curatively resected gastric cancer, a randomized controlled study by the sealed envelope method was performed with the participation of 97 hospitals in the Kyushu and Chugoku districts of Japan. The MMC+FT+ PSK group showed a significant increase in 5 year survival from the other groups (p<0.05). Moreover the survival rate was significantly higher in the MMC+FT+PSK group than in the MMC+FT group (p<0.01). According to the analysis on stratification, the MMC+FT+PSK group showed the best survival rate in cases with positive lymph node metastases, positive serosal invasion and positive lymph node metastases plus serosal invasion, and in cases of undifferentiated carcinoma by histological type and in those with a preoperative positive PPD reaction (p<0.01 or p<0.05). Thus, the combination of MMC, FT and PSK was indicated to be useful as an adjuvant immunochemotherapy for those patients with gastric cancer submitted to curative resection.