2015
PIK3CAH1047R- and Her2-initiated mammary tumors escape PI3K dependency by compensatory activation of MEK-ERK signaling
Cheng H, Liu P, Ohlson C, Xu E, Symonds L, Isabella A, Muller WJ, Lin NU, Krop IE, Roberts TM, Winer EP, Arteaga CL, Zhao JJ. PIK3CAH1047R- and Her2-initiated mammary tumors escape PI3K dependency by compensatory activation of MEK-ERK signaling. Oncogene 2015, 35: 2961-2970. PMID: 26640141, PMCID: PMC4896860, DOI: 10.1038/onc.2015.377.Peer-Reviewed Original ResearchConceptsBreast cancerPIK3CA mutationsMammary tumorsHER2 amplification/overexpressionHER2-positive breast cancerHER2-positive cancersPrimary mammary tumorsHER2/HER3PIK3CA-activating mutationsHER2/neuHuman breast cancerEffective treatment approachAmplification/overexpressionCompound mouse modelMEK-ERK signalingMouse mammary glandWorse prognosisCombination therapyMammary tumorigenesisMouse modelMutant PIK3CATreatment approachesHER2Combined inhibitionCompensatory activation
2006
Phase I pharmacokinetic (PK), and pharmacodynamic (PD) trial of the novel oral Notch inhibitor MK-0752 in patients (pts) with advanced breast cancer (BC) and other solid tumors
Krop I, Kosh M, Fearen I, Savoie J, Dallob A, Matthews C, Stone J, Winer E, Freedman S, Lorusso P. Phase I pharmacokinetic (PK), and pharmacodynamic (PD) trial of the novel oral Notch inhibitor MK-0752 in patients (pts) with advanced breast cancer (BC) and other solid tumors. Journal Of Clinical Oncology 2006, 24: 10574-10574. DOI: 10.1200/jco.2006.24.18_suppl.10574.Peer-Reviewed Original ResearchGrade 3 diarrheaAdvanced breast cancerBreast cancerPlasma AbetaDay 1Notch intracellular domainDose levelsSolid tumorsAccelerated dose escalationGamma-SecretaseGrade 2/3 fatigueMean PK parametersSubset of ptsElevated liver transaminasesAdvanced solid tumorsDaily oral dosingIntermittent dosing scheduleAnalysis of efficacyHuman breast cancerBC cell proliferationInhibition of NotchAbdominal crampingLiver transaminasesDosing schedulesPharmacodynamic trial