Abstract: An anti-FGFR2 antibody, an encoding nucleic acid of the antibody, a vector and host cell for the expression and production thereof, an antibody-drug conjugate, and a pharmaceutical composition comprising the antibody. The present invention further relates to the use of the antibody molecule in a drug for diagnosing a cancer caused by FGFR2-pathway-related dysregulation, and the use of the antibody or antibody-drug conjugate in the preparation of a medicament for treating a cancer caused by FGFR2-pathway-related dysregulation, in particular gastric cancer.

Abstract: The present application relates to azaaromatic amide derivatives for the treatment of cancer. Specifically, the present application relates to a preparation method and use of azaaromatic amide derivatives. The present application relates to azaaromatic amide derivatives and anilino-pyrimidine compounds represented by formula (I), formula (II), formula (III), formula (IV), and formula (V), and pharmaceutically acceptable salts thereof; the compounds or salts thereof can be used to treat or prevent a disease or disorder by regulating certain mutant forms of epidermal growth factor receptors. The present application also relates to a pharmaceutical composition comprising the compounds or salts thereof, and a method for treating various diseases mediated by EGFR, or HER2, or HER4 by using the compounds and salts thereof.