PIK3CA and breast cancer: The overexpressionof ErbB receptors is related with poor prognosis, drug resistance,metastasis, and lower survival rate in BC.64 Moreover, in this study, miRPath analysis indicated that the PI3K-Aktsignaling pathway and MAPK signaling pathways are correlated to miR-21,miR-155, miR-126, and miR-200c.