ERBB2 and breast carcinoma: Analysis of a large cancer dataset compiled from 121 cancer studies by the cBioPortal showed that breast cancers had the greatest number of genomic copies of WDR26 (Figure 1A); and the basal-like breast cancer subtype had the highest frequency (27%) of WDR26 gene amplification, as compared to the luminal A (23%), luminal B (18%) and HER2 positive (16%) subtypes.