ERBB2 and carcinoma: Likewise, poorly differentiated carcinomas, HER2-positive carcinomas, and triple-negative carcinomas were more often associated with a brisk inflammatory infiltrate detected by H&E (41.3%, 60%, and 41.9%, respectively; p < 0.0001), as well as by IHC (49.1%, 66.7%, and 47.4%, respectively; p < 0.0001) (Table 5).