The present invention provides a condensed pyrimidine compound represented by formula (I) or pharmaceutically acceptable salt thereof:where A represents a ringwhere at least one carbon atom within said ring is optionally substituted with one or more groups selected from the group consisting of lower alkyl, —O-(lower alkyl), halogen atom, carboxyl, —CO2-(lower alkyl), and carbamoyl, R1 represents: (1) phenyl substituted with at least three halogen atoms, which may have at least one additional substituent, or (2) cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, or cycloheptyl, each of which is optionally substituted; and R2 represents a group represented by formula (II) or an optionally substituted cyclic amino:wherein R21 and R22 may be identical or different and each represents —H, lower alkyl, lower alkenyl, lower alkynyl, cycloalkyl, phenyl, heteroaryl, non-aromatic heterocyclyl, or —O-(lower alkyl), each of which is optionally substituted.