TY - JOUR AU - Loibl, S; von Minckwitz, G; Schneeweiss, A TI - PIK3CA mutations are associated with lower rates of pathologic complete response to anti-human epidermal growth factor receptor 2 (her2) therapy in primary HER2-overexpressing breast cancer JO - J Clin Oncol VL - 32 PY - 2014 DO - 10.1200/JCO.2014.55.7876 SP - 3212 EP - 3220 N1 - et al. ER -