In a recent study, Shukla et al. evaluated the potency of Cowpea mosaic virus (CPMV) nanoparticle-based cancer vaccine in several mouse models of HER2+ tumors in conjugation with the antigenic CH401 peptide (CPMV-CH401) (Table 1) derived from the extracellular domain of HER2 receptor. Here, ERBB2 is linked to cancer.