2019
PIK3CA and MAP3K1 alterations imply luminal A status and are associated with clinical benefit from pan-PI3K inhibitor buparlisib and letrozole in ER+ metastatic breast cancer
Nixon MJ, Formisano L, Mayer IA, Estrada MV, González-Ericsson PI, Isakoff SJ, Forero-Torres A, Won H, Sanders ME, Solit DB, Berger MF, Cantley LC, Winer EP, Arteaga CL, Balko JM. PIK3CA and MAP3K1 alterations imply luminal A status and are associated with clinical benefit from pan-PI3K inhibitor buparlisib and letrozole in ER+ metastatic breast cancer. Npj Breast Cancer 2019, 5: 31. PMID: 31552290, PMCID: PMC6757060, DOI: 10.1038/s41523-019-0126-6.Peer-Reviewed Original ResearchMetastatic breast cancerClinical benefitBreast cancerPan-PI3K inhibitor buparlisibHuman epidermal growth factor 2Epidermal growth factor 2K inhibitorsPan-PI3K inhibitorPhase Ib studySubset of patientsPI3KBreast cancer cell linesPI3K inhibitorsPAM50 analysisCancer cell linesEndocrine therapyGrowth factor 2Only biomarkerPIK3CA mutationsClinical trialsMetastatic tissuesTherapeutic combinationsIb studyPatientsBuparlisib
2018
A phase Ib study of pictilisib (GDC-0941) in combination with paclitaxel, with and without bevacizumab or trastuzumab, and with letrozole in advanced breast cancer
Schöffski P, Cresta S, Mayer IA, Wildiers H, Damian S, Gendreau S, Rooney I, Morrissey KM, Spoerke JM, Ng VW, Singel SM, Winer E. A phase Ib study of pictilisib (GDC-0941) in combination with paclitaxel, with and without bevacizumab or trastuzumab, and with letrozole in advanced breast cancer. Breast Cancer Research 2018, 20: 109. PMID: 30185228, PMCID: PMC6125885, DOI: 10.1186/s13058-018-1015-x.Peer-Reviewed Original ResearchConceptsDose-limiting toxicityPhase Ib studyMetastatic breast cancerAdverse eventsBreast cancerIb studyResultsSixty-nine patientsAntitumor activityManageable safety profileAdvanced breast cancerSerious adverse eventsPreliminary antitumor activityDrug-drug interactionsEvaluation of safetySecondary endpointsPartial responseComplete responseDose escalationRandomized studySafety profilePatientsBevacizumabTrastuzumabPictilisibLetrozole
2017
A mouse-human phase I co-clinical trial of taselisib in combination with TDM1 in advanced HER2-positive breast cancer (MBC).
Metzger Filho O, Goel S, Barry W, Hamilton E, Tolaney S, Yardley D, Rees R, Demeo M, Mills C, Hafner M, Winer E, Zhao J, Krop I. A mouse-human phase I co-clinical trial of taselisib in combination with TDM1 in advanced HER2-positive breast cancer (MBC). Journal Of Clinical Oncology 2017, 35: 1030-1030. DOI: 10.1200/jco.2017.35.15_suppl.1030.Peer-Reviewed Original ResearchPhase Ib studyT-DM1Co-clinical trialsIb studyAdvanced HER2-positive breast cancerT-DM1-resistant cellsHER2-positive breast cancerPR/CRAcceptable safety profileAnti-HER2 therapyPI3K blockadePre-clinical experimentsConfirmed responsesMedian PFSPJP prophylaxisMedian durationMedian agePIK3CA H1047RPIK3CA statusSafety profilePneumocystis pneumoniaHER2 expressionClinical resultsMammary carcinomaBreast cancer
2014
SU2C phase Ib study of the PI3Kα inhibitor BYL719 with letrozole in ER+/HER2– metastatic breast cancer (MBC).
Mayer I, Abramson V, Balko J, Sanders M, Juric D, Li Y, Cantley L, Winer E, Arteaga C. SU2C phase Ib study of the PI3Kα inhibitor BYL719 with letrozole in ER+/HER2– metastatic breast cancer (MBC). Journal Of Clinical Oncology 2014, 32: 516-516. DOI: 10.1200/jco.2014.32.15_suppl.516.Peer-Reviewed Original ResearchStand Up to Cancer Phase Ib Study of Pan-Phosphoinositide-3-Kinase Inhibitor Buparlisib With Letrozole in Estrogen Receptor-Positive/Human Epidermal Growth Factor Receptor 2-Negative Metastatic Breast Cancer
Mayer IA, Abramson VG, Isakoff SJ, Forero A, Balko JM, Kuba MG, Sanders ME, Yap JT, Van den Abbeele AD, Li Y, Cantley LC, Winer E, Arteaga CL. Stand Up to Cancer Phase Ib Study of Pan-Phosphoinositide-3-Kinase Inhibitor Buparlisib With Letrozole in Estrogen Receptor-Positive/Human Epidermal Growth Factor Receptor 2-Negative Metastatic Breast Cancer. Journal Of Clinical Oncology 2014, 32: 1202-1209. PMID: 24663045, PMCID: PMC3986383, DOI: 10.1200/jco.2013.54.0518.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAminopyridinesAntineoplastic AgentsAntineoplastic Combined Chemotherapy ProtocolsBreast NeoplasmsCell Line, TumorClass I Phosphatidylinositol 3-KinasesDose-Response Relationship, DrugDrug Administration ScheduleFemaleFluorodeoxyglucose F18HumansLetrozoleMiddle AgedMorpholinesMultimodal ImagingNitrilesPhosphoinositide-3 Kinase InhibitorsPositron-Emission TomographyProtein Kinase InhibitorsRadiopharmaceuticalsReceptor, ErbB-2Receptors, EstrogenTomography, X-Ray ComputedTriazolesConceptsMaximum-tolerated dosePhase Ib studyPET/CTEndocrine therapyDisease progressionBreast cancerIb studyCommon drug-related adverse eventsDrug-related adverse eventsPIK3CA hot spot mutationsPositive breast cancer cell linesER-positive breast cancerPositron emission tomography/Human epidermal growth factor receptorBreast cancer refractoryClinical benefit rateOral reversible inhibitorPIK3CA mutation statusPhase III trialsMetastatic breast cancerRapid disease progressionEmission tomography/Different administration schedulesBreast cancer cell linesMetabolic disease progression
2012
SU2C phase Ib study of pan-PI3K inhibitor BKM120 with letrozole in ER+/HER2- metastatic breast cancer (MBC).
Mayer I, Abramson V, Balko J, Isakoff S, Kuba M, Sanders M, Forero-Torres A, Yap J, Van Den Abbeele A, Li Y, Arteaga C, Winer E. SU2C phase Ib study of pan-PI3K inhibitor BKM120 with letrozole in ER+/HER2- metastatic breast cancer (MBC). Journal Of Clinical Oncology 2012, 30: 510-510. DOI: 10.1200/jco.2012.30.15_suppl.510.Peer-Reviewed Original ResearchMetastatic breast cancerPan-PI3K inhibitor BKM120FDG-PETArm API3K pathway alterationsPhase Ib studyPhase Ib trialPost-menopausal patientsPI3K pathway inhibitionPI3K mutationsPI3K inhibitorsIb trialStable diseaseVisceral metastasesUnacceptable toxicityMost patientsArm BMedian ageDisease progressionPharmacodynamic biomarkersBreast cancerTreatment responseTumor biopsiesAntiestrogen resistanceIb study