The present disclosure includes a PINK1-C-terminal domain (PINK1-CTD) polypeptide that binds to ERBB tyrosine kinase domain (ERBB-TKD) and therefore impedes ERBB from dimerization and activation. The PINK1-CTD polypeptide inhibits, prevents and/or treats ERBB-expressing cancers. The disclosure demonstrates the anti-tumor function of the PINK1-CTD, which provides a new direction for ERBB-expressing cancer therapy.