ERBB2 and neoplasm: For the 19 patients with tumor types other than breast or oesogastric adenocarcinoma, the CBR was 25% (n = 2/8 with 2 PR) for ERBB2 mutation and 64 % (n = 7/11 with1 CR, 4 PR, 2 SD > 24 weeks) for ERBB2 amplification.