ERBB2 and neoplasm: At present, a large number of tumor markers have been proved to be ideal target indicators for tumor diagnosis and treatment, such as the folate receptor (FR) [30], integrin receptor [31], epithelial growth factor receptor (EGFR) [32], transferrin receptor [33], human epithelial growth factor receptor (HER2) [34], transporter, endothelin receptor [35], angiogenesis, prostate-specific membrane antigen (PSMA) [36], somatostatin receptor [37], gastrin-releasing peptide receptor (GRPR) [38], and peptides [39].