ERBB2 and gallbladder adenocarcinoma: SNU-2670 cell line was established from the metastatic liver mass of a 51-year-old female Asian patient (patient A; Table 1) with gallbladder adenocarcinoma harboring a HER2 gene amplification with a HER2/CEP17 ratio of 5.76 by FISH and protein overexpression of 2+ by IHC.