trastuzumab -| ERBB2 pertuzumab -| ERBB2 ERBB2 -> ERBB2 erlotinib -| ERBB2 ERBB1 -> ERBB1 pertuzumab -| ERBB1 PLCg -> ERBB1 EGF -> ERBB1 erlotinib -| ERBB1 ERK1_2 -> p70S6K AKT -> p70S6K mTOR -> p70S6K p70S6K -> p70S6K AKT -> AKT ERBB3 -> AKT mTOR -> AKT PDK1 -> AKT ERK1_2 -> ERK1_2 ERBB3 -> ERK1_2 MEK1_2 -> ERK1_2 PDK1 -> ERK1_2 ERBB1 -> PDK1 ERBB3 -> PDK1 ERBB2 -> PDK1 PDK1 -> PDK1 PKCa -> PKCa PLCg -> PKCa ERBB1 -> MEK1_2 ERBB3 -> MEK1_2 MEK1_2 -> MEK1_2 ERBB2 -> MEK1_2 AKT -> mTOR mTOR -> mTOR ERBB3 -> ERBB3 HRG -> ERBB3 pertuzumab -| ERBB3 erlotinib -| ERBB3 ERBB1 -> PLCg ERBB3 -> PLCg ERBB2 -> PLCg PLCg -> PLCg $AKT: (((PDK1 | mTOR) | AKT) | ERBB3) $ERBB1: (((ERBB1 & !(erlotinib | pertuzumab)) | (PLCg & !(erlotinib | pertuzumab))) | (EGF & !(erlotinib | pertuzumab))) $ERBB2: (ERBB2 & !((trastuzumab | pertuzumab) | erlotinib)) $ERBB3: ((ERBB3 & !(erlotinib | pertuzumab)) | (HRG & !(erlotinib | pertuzumab))) $ERK1_2: (((PDK1 | ERK1_2) | ERBB3) | MEK1_2) $MEK1_2: (((ERBB3 | ERBB2) | ERBB1) | MEK1_2) $PDK1: (((ERBB2 | PDK1) | ERBB3) | ERBB1) $PKCa: (PLCg | PKCa) $PLCg: (((ERBB3 | ERBB1) | ERBB2) | PLCg) $mTOR: (AKT | mTOR) $p70S6K: (((ERK1_2 | mTOR) | p70S6K) | AKT)