DRUG FOR TREATING TUMOR, ANTITUMOR AGENT, METHOD FOR TREATING TUMOR AND KIT FOR TREATING TUMOR

摘要

The purpose of the present invention is to provide a drug for treating tumor which is capable of exhibiting a therapeutic effect on non-responders, from among patients with gastric cancer, colorectal cancer and small cell lung cancer, said non-responders showing little response (sensitivity) to an antitumor agent containing, as the active ingredient, protein polysaccharides derived from Trametes versicolor. The purpose can be achieved by a drug for treating tumor comprising an antitumor agent, which contains protein polysaccharides derived from Trametes versicolor as the active ingredient, together with an inhibitor of immunosuppressive cells which contains a compound having an activity of inhibiting immunosuppressive cells.