abstract |
FIELD: biotechnology. n SUBSTANCE: a mutant fully human antibody against HER2 is described, wherein the amino acid sequence of the heavy chain variable region and the amino acid sequence of the antibody light chain variable region are SEQ ID NO: 10 and SEQ ID NO: 2; SEQ ID NO: 11 and SEQ ID NO: 2; or SEQ ID NO: 12 and SEQ ID NO: 2, respectively. Also, a nucleic acid encoding the described antibody is provided. A vector comprising such an acid. A composition containing the described antibody. n EFFECT: invention can be used in combination with additional therapeutic agents against HER2-positive tumors to treat an HER2-positive tumor, a weakly positive tumor, and a negative tumor. n 9 cl, 13 dwg, 6 tbl, 18 ex |