ERBB2 and breast cancer: Incorporating comprehensive characterization of the proteome, phospho-proteome and acetylproteome, this classification was refined in 2020 by CPTAC, analyzing fresh frozen materials from 122 TCGA breast cancer specimens and describing the presence of four proteome subgroups which correlated with their PAM50 subtypes, termed “LumA-Inclusive”, “LumB-Inclusive”, “Basal-Inclusive”, “Her2-Inclusive” [84].