More detailed data concerning HER2 testing in the ToGA study has been recently published revealing that precisely 610 cases out of 3,665 tumor samples (16.6 %) were in fact considered HER2 positive, by either scoring IHC 3+ or IHC 2+ with gene amplification by fluorescence in situ hybridization (FISH) [30]. This evidence concerns the gene ERBB2 and neoplasm.