ERBB2 and colorectal adenocarcinoma: We observed that some tumor samples displayed high expression of B7H6 and low expression of HER2 (e.g. breast carcinoma #1910 and colorectal adenocarcinoma #2948), while other samples displayed high HER2 and low B7H6 expression (e.g. breast carcinoma #2392 and colorectal adenocarcinoma #1898) (Figure 2(a-b)).