1. An anti-cancer agent, comprising as an active ingredient an antibody that binds to an EREG protein, wherein said antibody has ADCC activity, CDC activity and / or neutralizing activity against an EREG protein, where antibody (i) binds to the same epitope of an EREG protein that the antibody according to any one of subparagraphs (1) to (43) below, and (ii) is not the same antibody as described in subparagraphs (1) to (43) below: (1) an antibody containing H chain having the amino acid sequence of SEQ ID NO: 2 in to as CDR1, the amino acid sequence of SEQ ID NO: 4 as CDR2 and the amino acid sequence of SEQ ID NO: 6 as CDR3, and containing the L chain having the amino acid sequence of SEQ ID NO: 12 as CDR1, the amino acid sequence of SEQ ID NO: 14 as CDR2 and the amino acid sequence of SEQ ID NO: 16 as CDR3； (2) the antibody according to (1), where the H chain has the amino acid sequence from positions 117-452 in the amino acid sequence of SEQ ID NO: 8 as CH； (3 ) the antibody according to (1), where the H chain has an amino acid sequence the identity from positions 117-446 in the amino acid sequence of SEQ ID NO: 10 as CH； (4) the antibody according to (1), where the L chain has the amino acid sequence from positions 107-213 in the amino acid sequence of SEQ ID NO: 18 as CL ； (5) the antibody according to (1), where the L chain has the amino acid sequence from positions 107-213 in the amino acid sequence of SEQ ID NO: 20 as CL； (6) the antibody containing the H chain according to (2) and the L chain according to (4)； (7) an antibody containing an H chain according to (3) and an L chain according to (5)； (8) an antibody containing an H chain having ami the acid sequence of SEQ ID NO: 49 as CDR1, the amino acid sequence of SEQ ID NO: 51 as CDR2 and the amino acid sequence of SEQ ID1. Средство против злокачественной опухоли, содержащее в качестве активного ингредиента антитело, которое связывается с белком EREG, где указанное антитело обладает ADCC активностью, CDC ак
