2020
The Genomic Landscape of Intrinsic and Acquired Resistance to Cyclin-Dependent Kinase 4/6 Inhibitors in Patients with Hormone Receptor–Positive Metastatic Breast Cancer
Wander SA, Cohen O, Gong X, Johnson GN, Buendia-Buendia JE, Lloyd MR, Kim D, Luo F, Mao P, Helvie K, Kowalski KJ, Nayar U, Waks AG, Parsons SH, Martinez R, Litchfield LM, Ye XS, Yu C, Jansen VM, Stille JR, Smith PS, Oakley GJ, Chu QS, Batist G, Hughes ME, Kremer JD, Garraway LA, Winer EP, Tolaney SM, Lin NU, Buchanan SG, Wagle N. The Genomic Landscape of Intrinsic and Acquired Resistance to Cyclin-Dependent Kinase 4/6 Inhibitors in Patients with Hormone Receptor–Positive Metastatic Breast Cancer. Cancer Discovery 2020, 10: 1174-1193. PMID: 32404308, PMCID: PMC8815415, DOI: 10.1158/2159-8290.cd-19-1390.Peer-Reviewed Original ResearchMeSH KeywordsAntineoplastic AgentsBiopsyBreast NeoplasmsCell Cycle ProteinsCell Line, TumorCheckpoint Kinase 1Drug Resistance, NeoplasmExome SequencingFemaleGenomicsHumansProtein Kinase InhibitorsProto-Oncogene Proteins c-aktProto-Oncogene Proteins p21(ras)Receptors, SteroidRetinoblastoma Binding ProteinsUbiquitin-Protein LigasesConceptsCyclin-dependent kinase 4/6 inhibitorsMetastatic breast cancerBreast cancerResistant tumorsHormone receptor-positive metastatic breast cancerHormone receptor-positive breast cancerReceptor-positive breast cancerEstrogen receptor expressionCandidate resistance mechanismsWhole-exome sequencingPrecision-based approachesCDK4/6i resistanceMechanisms of resistanceReceptor expressionTherapeutic strategiesCDK4/6iTherapeutic opportunitiesPatient samplesTumorsIssue featurePatientsCancerAcquired ResistanceCancer cellsAlterations
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