2019
Phase II trial of AKT inhibitor MK-2206 in patients with advanced breast cancer who have tumors with PIK3CA or AKT mutations, and/or PTEN loss/PTEN mutation
Xing Y, Lin NU, Maurer MA, Chen H, Mahvash A, Sahin A, Akcakanat A, Li Y, Abramson V, Litton J, Chavez-MacGregor M, Valero V, Piha-Paul SA, Hong D, Do KA, Tarco E, Riall D, Eterovic AK, Wulf GM, Cantley LC, Mills GB, Doyle LA, Winer E, Hortobagyi GN, Gonzalez-Angulo AM, Meric-Bernstam F. Phase II trial of AKT inhibitor MK-2206 in patients with advanced breast cancer who have tumors with PIK3CA or AKT mutations, and/or PTEN loss/PTEN mutation. Breast Cancer Research 2019, 21: 78. PMID: 31277699, PMCID: PMC6612080, DOI: 10.1186/s13058-019-1154-8.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedBiomarkersBreast NeoplasmsClass I Phosphatidylinositol 3-KinasesDrug MonitoringFemaleHeterocyclic Compounds, 3-RingHigh-Throughput Nucleotide SequencingHumansImmunohistochemistryMiddle AgedMutationNeoplasm MetastasisNeoplasm StagingProtein Kinase InhibitorsProto-Oncogene Proteins c-aktTreatment OutcomeConceptsObjective response ratePeripheral blood mononuclear cellsPlatelet-rich plasmaAdvanced breast cancerPhase II trialPre-treatment biopsiesBreast cancerAKT inhibitor MKAKT1 mutationsPTEN lossII trialPIK3CA mutationsPIK3CA/AKT1 mutationsAdvanced breast cancer patientsInhibitor MKTriple-negative breast cancerMethodsThe primary endpointPIK3CA/AKT1Common adverse eventsPre-treated patientsProgression-free survivalResultsTwenty-seven patientsBreast cancer patientsBlood mononuclear cellsPTEN mutations
2015
PI3K-p110α mediates resistance to HER2-targeted therapy in HER2+, PTEN-deficient breast cancers
Wang Q, Liu P, Spangle JM, Von T, Roberts TM, Lin NU, Krop IE, Winer EP, Zhao JJ. PI3K-p110α mediates resistance to HER2-targeted therapy in HER2+, PTEN-deficient breast cancers. Oncogene 2015, 35: 3607-3612. PMID: 26500061, PMCID: PMC4846581, DOI: 10.1038/onc.2015.406.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBreast NeoplasmsCell Line, TumorCell SurvivalClass I Phosphatidylinositol 3-KinasesDrug Resistance, NeoplasmFemaleHumansLapatinibMammary Neoplasms, ExperimentalMice, KnockoutMolecular Targeted TherapyPhosphatidylinositol 3-KinasesPhosphoinositide-3 Kinase InhibitorsProtein Kinase InhibitorsProto-Oncogene Proteins c-aktPTEN PhosphohydrolaseQuinazolinesReceptor, ErbB-2Signal TransductionThiazolesTumor BurdenXenograft Model Antitumor AssaysConceptsBreast tumorsP110β inhibitorsHuman epidermal growth factor receptor 2 (HER2) amplificationP110α inhibitionPTEN lossInhibition of HER2Treatment of HER2Human cancersPI3K pathway activationPTEN-deficient breast cancersGenetic mouse modelsPI3K/Akt signalingPTEN-deficient tumorsPI3K/AktDual HER2Therapeutic regimenHER2 inhibitionPIK3CA mutationsTumor regressionBreast cancerMouse modelXenograft modelHER2Null tumorsHER2 activation
2011
Phase I/II Study of Trastuzumab in Combination With Everolimus (RAD001) in Patients With HER2-Overexpressing Metastatic Breast Cancer Who Progressed on Trastuzumab-Based Therapy
Morrow PK, Wulf GM, Ensor J, Booser DJ, Moore JA, Flores PR, Xiong Y, Zhang S, Krop IE, Winer EP, Kindelberger DW, Coviello J, Sahin AA, Nuñez R, Hortobagyi GN, Yu D, Esteva FJ. Phase I/II Study of Trastuzumab in Combination With Everolimus (RAD001) in Patients With HER2-Overexpressing Metastatic Breast Cancer Who Progressed on Trastuzumab-Based Therapy. Journal Of Clinical Oncology 2011, 29: 3126-3132. PMID: 21730275, PMCID: PMC3157979, DOI: 10.1200/jco.2010.32.2321.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAntibodies, MonoclonalAntibodies, Monoclonal, HumanizedAntineoplastic Combined Chemotherapy ProtocolsBiomarkers, TumorBreast NeoplasmsDisease-Free SurvivalEverolimusFemaleHumansImmunohistochemistryKaplan-Meier EstimateMiddle AgedNeoplasm MetastasisPTEN PhosphohydrolaseReceptor, ErbB-2Salvage TherapySirolimusTOR Serine-Threonine KinasesTrastuzumabConceptsHER2-overexpressing metastatic breast cancerMetastatic breast cancerProgression-free survivalCombination of everolimusTrastuzumab-based therapyPTEN lossBreast cancerPhase I/II studyMedian progression-free survivalDana-Farber Cancer InstituteTexas MD Anderson Cancer CenterMD Anderson Cancer CenterBeth Israel Deaconess Medical CenterClinical benefit ratePersistent stable diseaseAnderson Cancer CenterDownstream mammalian targetDaily everolimusNonhematologic toxicityStable diseaseII studyOverall survivalPartial responseHER2 overexpressingClinical benefit