ERBB2 and breast neoplasm: Conversely, HER2+ breast tumors are abundant in Akkermansia (phylum Verrucomicrobia), Thermi, Firmicutes (Filibacter, Anaerostipes, and Granulicatella_US31), Bacteroidetes (Cloacibacterium, Alloprevotella, and Dyadobacter), and Proteobacteria (Burkholderiales and Helicobacter pylori, PRD01a011B, Stakelama, and Blastomonas) [9,26,83,84,85].