PIK3CA and breast cancer: The panel allowed sCNA analysis of 19 genes, of which 11 were also present in the 93 BC‐related protein‐coding genes with probable driver mutations [10]: BRAF, CCND1, CDK6, EGFR, ERBB2, FGFR1, FGFR2, KRAS, MYC, PDGFRA, and PIK3CA.