ERBB3 and exocrine pancreatic carcinoma: HER3 expressing human cancer cell lines BxPC-3 (pancreatic carcinoma) and DU145 (prostate cancer) were used for in vitro characterization of [68Ga]Ga-(HE)3-ZHER3-DOTA and [68Ga]Ga-(HE)3-ZHER3-DOTAGA.