Combined use of antitumor indolopyrrolocarbazole derivative and other antitumor agent

Abstract From the Canadian patent

A combination of pharmaceutical preparations which are simultaneously separately, or successively administered in treatments for cancers. It comprises the following two separate preparations: * a pharmaceutical preparation comprising a pharmaceutically acceptable support or diluent and either at least one compound represented by the general formula I: I (wherein R1 and R2 each independently represents hydrogen lower alkyl, etc.; , G represents a pentose group etc.; and X1 and X2 each independently represents hydrogen, halogeno, etc.) or a pharmaceutically acceptable salt of the compound and * a pharmaceutical preparation comprising a pharmaceutically acceptable support or diluent and …