2024
A Pooled Analysis of Trastuzumab Deruxtecan in Patients With HER2-Positive Metastatic Breast Cancer With Brain Metastases
André F, Cortés J, Curigliano G, Modi S, Li W, Park Y, Chung W, Kim S, Yamashita T, Pedrini J, Im S, Tseng L, Harbeck N, Krop I, Nakatani S, Tecson K, Ashfaque S, Egorov A, Hurvitz S. A Pooled Analysis of Trastuzumab Deruxtecan in Patients With HER2-Positive Metastatic Breast Cancer With Brain Metastases. Annals Of Oncology 2024 PMID: 39241960, DOI: 10.1016/j.annonc.2024.08.2347.Peer-Reviewed Original ResearchHER2-positive metastatic breast cancerBlinded independent central reviewMetastatic breast cancerBrain metastasesT-DXdOverall survivalCNS-PFSTrastuzumab deruxtecanBreast cancerCentral nervous system progression-free survivalIntracranial responsePooled analysisIntracranial objective response rateSafety of trastuzumab deruxtecanSystemic progression-free survivalObjective response rateORR of patientsProgression-free survivalDuration of responseFood and Drug Administration criteriaIndependent central reviewUS Food and Drug Administration criteriaCompare treatmentsExploratory pooled analysisBM status
2023
377O A pooled analysis of trastuzumab deruxtecan (T-DXd) in patients (pts) with HER2-positive (HER2+) metastatic breast cancer (mBC) with brain metastases (BMs) from DESTINY-Breast (DB) -01, -02, and -03
Hurvitz S, Modi S, Li W, Park Y, Chung W, Kim S, Cortés J, Yamashita T, Pedrini J, Im S, Tseng L, Harbeck N, Krop I, Curigliano G, Mathias E, Cathcart J, Cagnazzo A, Ashfaque S, Egorov A, André F. 377O A pooled analysis of trastuzumab deruxtecan (T-DXd) in patients (pts) with HER2-positive (HER2+) metastatic breast cancer (mBC) with brain metastases (BMs) from DESTINY-Breast (DB) -01, -02, and -03. Annals Of Oncology 2023, 34: s335-s336. DOI: 10.1016/j.annonc.2023.09.554.Peer-Reviewed Original ResearchPhase II trial of pembrolizumab in patients with brain metastases.
Brastianos P, Kim A, Giobbie-Hurder A, Lee E, Lin N, Overmoyer B, Wen P, Nayak L, Cohen J, Dietrich J, Heist R, Krop I, Lawrence D, Mayer E, Winer E, Shih H, Oh K, Cahill D, Gerstner E, Sullivan R. Phase II trial of pembrolizumab in patients with brain metastases. Journal Of Clinical Oncology 2023, 41: 2006-2006. DOI: 10.1200/jco.2023.41.16_suppl.2006.Peer-Reviewed Original ResearchBrain metastasesPrimary endpointBenefit rateEvaluable patientsLung cancerBreast cancerTherapeutic strategiesSingle-arm phase 2 clinical trialNon-small cell lung cancerHormone receptor-positive diseaseSmall cell lung cancerPhase 2 clinical trialGrade 4 toxicityLogical therapeutic strategyRECIST 1.1 criteriaMedian overall survivalPD-1 blockadePD-1 inhibitorsPrimary efficacy endpointReceptor-positive diseasePhase II trialImmune-based strategiesTriple-negative subtypeCell lung cancerT cell cytotoxicityTucatinib vs Placebo, Both in Combination With Trastuzumab and Capecitabine, for Previously Treated ERBB2 (HER2)-Positive Metastatic Breast Cancer in Patients With Brain Metastases
Lin N, Murthy R, Abramson V, Anders C, Bachelot T, Bedard P, Borges V, Cameron D, Carey L, Chien A, Curigliano G, DiGiovanna M, Gelmon K, Hortobagyi G, Hurvitz S, Krop I, Loi S, Loibl S, Mueller V, Oliveira M, Paplomata E, Pegram M, Slamon D, Zelnak A, Ramos J, Feng W, Winer E. Tucatinib vs Placebo, Both in Combination With Trastuzumab and Capecitabine, for Previously Treated ERBB2 (HER2)-Positive Metastatic Breast Cancer in Patients With Brain Metastases. JAMA Oncology 2023, 9: 197-205. PMID: 36454580, PMCID: PMC9716438, DOI: 10.1001/jamaoncol.2022.5610.Peer-Reviewed Original ResearchConceptsErbB2-positive metastatic breast cancerMetastatic breast cancerPlacebo-combination groupPositive metastatic breast cancerNew brain lesionsBrain metastasesOverall survivalSubgroup analysisBrain lesionsBreast cancerIntracranial progression-free survivalPlacebo-controlled clinical trialIntracranial objective response rateStable brain metastasesMedian overall survivalObjective response rateProgression-free survivalExploratory subgroup analysisGreater clinical benefitCNS-PFSHER2CLIMB trialIntracranial outcomesFirst progressionMedian ageClinical benefit
2022
Corrigendum to “Tucatinib versus placebo added to trastuzumab and capecitabine for patients with pretreated HER2D metastatic breast cancer with and without brain metastases (HER2CLIMB): final overall survival analysis” [Annals of Oncology 33 (2022) 321-329]
Curigliano G, Mueller V, Borges V, Hamilton E, Hurvitz S, Loi S, Murthy R, Okines A, Paplomata E, Cameron D, Carey L, Gelmon K, Hortobagyi G, Krop I, Loibl S, Pegram M, Slamon D, Ramos J, Feng W, Winer E. Corrigendum to “Tucatinib versus placebo added to trastuzumab and capecitabine for patients with pretreated HER2D metastatic breast cancer with and without brain metastases (HER2CLIMB): final overall survival analysis” [Annals of Oncology 33 (2022) 321-329]. Annals Of Oncology 2022, 34: 630. PMID: 36564285, DOI: 10.1016/j.annonc.2022.12.005.Peer-Reviewed Original ResearchTrastuzumab Deruxtecan in HER2-Positive Metastatic Breast Cancer Patients with Brain Metastases: A DESTINY-Breast01 Subgroup Analysis
Jerusalem G, Park YH, Yamashita T, Hurvitz S, Modi S, Andre F, Krop I, Farré X, You B, Saura C, Kim S, Osborne C, Murthy R, Gianni L, Takano T, Liu Y, Cathcart J, Lee C, Perrin C. Trastuzumab Deruxtecan in HER2-Positive Metastatic Breast Cancer Patients with Brain Metastases: A DESTINY-Breast01 Subgroup Analysis. Cancer Discovery 2022, 12: 2754-2762. PMID: 36255231, PMCID: PMC9716244, DOI: 10.1158/2159-8290.cd-22-0837.Peer-Reviewed Original ResearchConceptsMedian progression-free survivalMetastatic breast cancerHER2-positive metastatic breast cancerBrain metastasesT-DXdTrastuzumab deruxtecanBreast cancerHER2-positive metastatic breast cancer patientsMetastatic breast cancer patientsDurable clinical activityObjective response rateProgression-free survivalBreast cancer patientsLimited treatment optionsPopulation warrants further investigationBest percentage changeWarrants further investigationIntracranial progressionStable diseasePartial responseComplete responseDurable efficacySafety profileTherapeutic optionsTreatment optionsPhase 2 trial of tucatinib plus trastuzumab deruxtecan in patients with HER2+ locally advanced or metastatic breast cancer with and without brain metastases (HER2CLIMB-04, trial in progress).
Krop I, Carey L, Ramos J, Chen Y, Hamilton E. Phase 2 trial of tucatinib plus trastuzumab deruxtecan in patients with HER2+ locally advanced or metastatic breast cancer with and without brain metastases (HER2CLIMB-04, trial in progress). Journal Of Clinical Oncology 2022, 40: tps1111-tps1111. DOI: 10.1200/jco.2022.40.16_suppl.tps1111.Peer-Reviewed Original ResearchHuman epidermal growth factor receptor 2Metastatic breast cancerDisease control rateProgression-free survivalDuration of responseBrain metastasesAntibody-drug conjugatesRECIST 1.1Trastuzumab deruxtecanInvestigator assessmentBreast cancerSmall molecule tyrosine kinase inhibitorsTopoisomerase I inhibitor payloadEpidermal growth factor receptor 2Monoclonal antibodiesBreast cancer xenograft modelActive brain metastasesResponse-evaluable patientsManageable safety profileObjective response ratePhase 2 studyPhase 2 trialGrowth factor receptor 2Limited treatment optionsPatient-reported outcomesManagement of Advanced Human Epidermal Growth Factor Receptor 2–Positive Breast Cancer and Brain Metastases: ASCO Guideline Update
Ramakrishna N, Anders CK, Lin NU, Morikawa A, Temin S, Chandarlapaty S, Crews JR, Davidson NE, Franzoi MAB, Kirshner JJ, Krop IE, Patt DA, Perlmutter J, Giordano SH. Management of Advanced Human Epidermal Growth Factor Receptor 2–Positive Breast Cancer and Brain Metastases: ASCO Guideline Update. Journal Of Clinical Oncology 2022, 40: 2636-2655. PMID: 35640075, DOI: 10.1200/jco.22.00520.Peer-Reviewed Original ResearchConceptsWhole brain radiotherapyAdvanced breast cancerBrain metastasesSystemic therapyBreast cancerLocal therapyGuideline recommendationsAdvanced human epidermal growth factor receptorHER2-positive advanced breast cancerPositive advanced breast cancerHuman epidermal growth factor receptor 2Epidermal growth factor receptor 2Human epidermal growth factor receptorAppropriate local therapyASCO Guideline UpdateBest supportive careProgression-free survivalSize of metastasesGrowth factor receptor 2Presence of symptomsRoutine magnetic resonanceFactor receptor 2Outcomes of interestMagnetic resonance imagingEpidermal growth factor receptor
2021
Tucatinib versus placebo added to trastuzumab and capecitabine for patients with pretreated HER2+ metastatic breast cancer with and without brain metastases (HER2CLIMB): final overall survival analysis
Curigliano G, Mueller V, Borges V, Hamilton E, Hurvitz S, Loi S, Murthy R, Okines A, Paplomata E, Cameron D, Carey L, Gelmon K, Hortobagyi G, Krop I, Loibl S, Pegram M, Slamon D, Ramos J, Feng W, Winer E. Tucatinib versus placebo added to trastuzumab and capecitabine for patients with pretreated HER2+ metastatic breast cancer with and without brain metastases (HER2CLIMB): final overall survival analysis. Annals Of Oncology 2021, 33: 321-329. PMID: 34954044, DOI: 10.1016/j.annonc.2021.12.005.Peer-Reviewed Original ResearchConceptsProgression-free survivalMetastatic breast cancerPlacebo-combination groupOverall survivalCombination groupBreast cancerHER2CLIMB trialBrain metastasesMedian durationSafety outcomesPrimary analysisFinal overall survival analysisHuman epidermal growth factor receptor 2 positive metastatic breast cancerPositive metastatic breast cancerMeaningful survival benefitMedian overall survivalPlacebo-controlled trialOverall study populationOverall survival analysisFinal OSMetastatic HER2Placebo combinationAdverse eventsLast patientPrespecified subgroups331TiP HER2CLIMB-04: Phase II trial of tucatinib + trastuzumab deruxtecan in patients with HER2+ locally advanced or metastatic breast cancer with and without brain metastases
Carey L, Krop I, Ramos J, Feng W, Hamilton E. 331TiP HER2CLIMB-04: Phase II trial of tucatinib + trastuzumab deruxtecan in patients with HER2+ locally advanced or metastatic breast cancer with and without brain metastases. Annals Of Oncology 2021, 32: s510-s511. DOI: 10.1016/j.annonc.2021.08.614.Peer-Reviewed Original ResearchUpdated results of tucatinib versus placebo added to trastuzumab and capecitabine for patients with pretreated HER2+ metastatic breast cancer with and without brain metastases (HER2CLIMB).
Curigliano G, Mueller V, Borges V, Hamilton E, Hurvitz S, Loi S, Murthy R, Okines A, Paplomata E, Cameron D, Carey L, Gelmon K, Hortobagyi G, Krop I, Loibl S, Pegram M, Slamon D, Ramos J, Zhang C, Winer E. Updated results of tucatinib versus placebo added to trastuzumab and capecitabine for patients with pretreated HER2+ metastatic breast cancer with and without brain metastases (HER2CLIMB). Journal Of Clinical Oncology 2021, 39: 1043-1043. DOI: 10.1200/jco.2021.39.15_suppl.1043.Peer-Reviewed Original ResearchMetastatic breast cancerBrain metastasesOverall survivalTyrosine kinase inhibitorsBreast cancerPlacebo armAnalysis of OSOral tyrosine kinase inhibitorECOG performance statusPlacebo-controlled trialTotal study populationKaplan-Meier timeHER2CLIMB trialMeaningful prolongationMetastatic HER2Study medicationTolerability assessmentsMetastatic settingAdverse eventsDose modificationHazard ratioLast patientPerformance statusDisease progressionStudy populationPharmacokinetic (PK) analyses in CSF and plasma from TBCRC049, an ongoing trial to assess the safety and efficacy of the combination of tucatinib, trastuzumab and capecitabine for the treatment of leptomeningeal metastasis (LM) in HER2 positive breast cancer.
Stringer-Reasor E, O'Brien B, Topletz-Erickson A, White J, Lobbous M, Riley K, Childress J, LaMaster K, Melisko M, Morikawa A, De Groot J, Krop I, Valero V, Rimawi M, Wolff A, Tripathy D, Lin N, Murthy R. Pharmacokinetic (PK) analyses in CSF and plasma from TBCRC049, an ongoing trial to assess the safety and efficacy of the combination of tucatinib, trastuzumab and capecitabine for the treatment of leptomeningeal metastasis (LM) in HER2 positive breast cancer. Journal Of Clinical Oncology 2021, 39: 1044-1044. DOI: 10.1200/jco.2021.39.15_suppl.1044.Peer-Reviewed Original ResearchLeptomeningeal metastasesBrain metastasesBreast cancerPharmacokinetic analysisPhase 2 single-arm studyHER2-positive breast cancerCombination of tucatinibNew brain metastasesSingle-arm studyPositive breast cancerTyrosine kinase inhibitorsHigh interindividual variabilityMetastatic HER2Accrual goalEligible patientsMetastatic settingPrimary endpointOverall survivalOmmaya reservoirOngoing trialsPlasma concentrationsCapecitabinePatientsDay 1PK samplesTrastuzumab deruxtecan (T-DXd) in patients with HER2+ metastatic breast cancer with brain metastases: A subgroup analysis of the DESTINY-Breast01 trial.
Jerusalem G, Park Y, Yamashita T, Hurvitz S, Modi S, Andre F, Krop I, Gonzalez X, Hall P, You B, Saura C, Kim S, Osborne C, Sagara Y, Tokunaga E, Liu Y, Cathcart J, Lee C, Perrin C. Trastuzumab deruxtecan (T-DXd) in patients with HER2+ metastatic breast cancer with brain metastases: A subgroup analysis of the DESTINY-Breast01 trial. Journal Of Clinical Oncology 2021, 39: 526-526. DOI: 10.1200/jco.2021.39.15_suppl.526.Peer-Reviewed Original ResearchMetastatic breast cancerMedian progression-free survivalObjective response rateBrain metastasesT-DXdSubgroup analysisClinical activityBreast cancerResponse rateTopoisomerase I inhibitor payloadBaseline brain metastasesDurable clinical activityNon-target lesionsSubgroups of ptsPhase 2 trialProgression-free survivalTreatment of adultsIndependent central reviewSystemic disease controlStrong clinical activityAnti-HER2 antibodyAdult ptsBM diameterPrior chemotherapyMedian durationHER2CLIMB-04: Phase 2 open label trial of tucatinib plus trastuzumab deruxtecan in patients with HER2+ unresectable locally advanced or metastatic breast cancer with and without brain metastases (trial in progress).
Krop I, Ramos J, Zhang C, Hamilton E. HER2CLIMB-04: Phase 2 open label trial of tucatinib plus trastuzumab deruxtecan in patients with HER2+ unresectable locally advanced or metastatic breast cancer with and without brain metastases (trial in progress). Journal Of Clinical Oncology 2021, 39: tps1097-tps1097. DOI: 10.1200/jco.2021.39.15_suppl.tps1097.Peer-Reviewed Original ResearchHuman epidermal growth factor receptor 2Metastatic breast cancerProgression-free survivalDisease control rateDuration of responseBrain metastasesOverall survivalT-DXdEpidermal growth factor receptorRECIST v1.1Metastatic settingTrastuzumab deruxtecanBreast cancerOpen-label phase 2 trialPhase 2 open-label trialSmall molecule tyrosine kinase inhibitorsTopoisomerase I inhibitor payloadTreatment of HER2Epidermal growth factor receptor 2Molecule tyrosine kinase inhibitorsHuman epidermal growth factor receptorActive brain metastasesCombination of tucatinibSolid Tumors v1.1Objective response rate128TiP HER2CLIMB-04: Phase II trial of tucatinib + trastuzumab deruxtecan in patients with HER2+ unresectable locally-advanced or metastatic breast cancer with and without brain metastases
Hamilton E, Ramos J, Feng W, Krop I. 128TiP HER2CLIMB-04: Phase II trial of tucatinib + trastuzumab deruxtecan in patients with HER2+ unresectable locally-advanced or metastatic breast cancer with and without brain metastases. Annals Of Oncology 2021, 32: s76. DOI: 10.1016/j.annonc.2021.03.142.Peer-Reviewed Original Research
2020
Phase II trial of carboplatin and bevacizumab in patients with breast cancer brain metastases
Leone JP, Emblem KE, Weitz M, Gelman RS, Schneider BP, Freedman RA, Younger J, Pinho MC, Sorensen AG, Gerstner ER, Harris G, Krop IE, Morganstern D, Sohl J, Hu J, Kasparian E, Winer EP, Lin NU. Phase II trial of carboplatin and bevacizumab in patients with breast cancer brain metastases. Breast Cancer Research 2020, 22: 131. PMID: 33256829, PMCID: PMC7706261, DOI: 10.1186/s13058-020-01372-w.Peer-Reviewed Original ResearchMeSH KeywordsAdultAntineoplastic Combined Chemotherapy ProtocolsBevacizumabBrainBrain NeoplasmsBreastBreast NeoplasmsCarboplatinFemaleGenotyping TechniquesHumansKaplan-Meier EstimateMagnetic Resonance ImagingMiddle AgedPolymorphism, Single NucleotideProgression-Free SurvivalTrastuzumabVascular Endothelial Growth Factor AConceptsProgression-free survivalBreast cancer brain metastasesEarly MRI changesCancer brain metastasesBrain metastasesOverall survivalMRI changesBreast cancerEastern Cooperative Oncology Group performance statusDay 1Cycle 1 day 1Cycle 1 day 8Median progression-free survivalWorse progression-free survivalRegimen warrants further investigationDurable objective responsesECOG PS 1Efficacy of bevacizumabHER2-positive diseaseProgressive brain metastasesResultsThirty-eight patientsMedian overall survivalObjective response ratePhase II trialContrast-enhanced brain MRIPhase I dose-escalation trial of tucatinib in combination with trastuzumab in patients with HER2-positive breast cancer brain metastases
Filho O, Leone JP, Li T, Tan-Wasielewski Z, Trippa L, Barry WT, Younger J, Lawler E, Walker L, Freedman RA, Tolaney SM, Krop I, Winer EP, Lin NU. Phase I dose-escalation trial of tucatinib in combination with trastuzumab in patients with HER2-positive breast cancer brain metastases. Annals Of Oncology 2020, 31: 1231-1239. PMID: 32461105, DOI: 10.1016/j.annonc.2020.05.014.Peer-Reviewed Original ResearchConceptsClinical benefit rateHER2-positive brain metastasesAlanine aminotransferase elevationCohort ABrain metastasesCohort BAminotransferase elevationBreast cancerHER2-positive breast cancer brain metastasesPhase I dose-escalation trialMedian progression-free survivalBreast cancer brain metastasesCommon dose-limiting toxicityI dose-escalation trialHER2-positive breast cancerCombination of tucatinibSecondary end pointsCancer brain metastasesDose-escalation trialProgression-free survivalDose-limiting toxicityMetastatic breast cancerBrain radiationObjective responseIntracranial activity
2019
Tucatinib, Trastuzumab, and Capecitabine for HER2-Positive Metastatic Breast Cancer
Murthy RK, Loi S, Okines A, Paplomata E, Hamilton E, Hurvitz SA, Lin NU, Borges V, Abramson V, Anders C, Bedard PL, Oliveira M, Jakobsen E, Bachelot T, Shachar SS, Müller V, Braga S, Duhoux FP, Greil R, Cameron D, Carey LA, Curigliano G, Gelmon K, Hortobagyi G, Krop I, Loibl S, Pegram M, Slamon D, Palanca-Wessels MC, Walker L, Feng W, Winer EP. Tucatinib, Trastuzumab, and Capecitabine for HER2-Positive Metastatic Breast Cancer. New England Journal Of Medicine 2019, 382: 597-609. PMID: 31825569, DOI: 10.1056/nejmoa1914609.Peer-Reviewed Original ResearchMeSH KeywordsAgedAntineoplastic Combined Chemotherapy ProtocolsBrain NeoplasmsBreast NeoplasmsCapecitabineConsolidation ChemotherapyDiarrheaDouble-Blind MethodFemaleHumansKaplan-Meier EstimateMiddle AgedOxazolesProgression-Free SurvivalProtein-Tyrosine KinasesPyridinesQuinazolinesReceptor, ErbB-2TrastuzumabConceptsHER2-positive metastatic breast cancerProgression-free survivalPlacebo-combination groupMetastatic breast cancerElevated aminotransferase levelsBrain metastasesBreast cancerOverall survivalAminotransferase levelsMedian progression-free survivalPalmar-plantar erythrodysesthesia syndromeBetter progression-free survivalPositive metastatic breast cancerHuman epidermal growth factor receptor 2End pointEpidermal growth factor receptor 2Common adverse eventsMedian overall survivalObjective response ratePrimary end pointSecondary end pointsGrowth factor receptor 2Overall survival outcomesRisk of diarrheaFactor receptor 2Pre- and Postoperative Neratinib for HER2-Positive Breast Cancer Brain Metastases: Translational Breast Cancer Research Consortium 022
Freedman RA, Gelman RS, Agar NYR, Santagata S, Randall EC, Lopez B, Connolly RM, Dunn IF, Van Poznak CH, Anders CK, Melisko ME, Silvestri K, Cotter CM, Componeschi KP, Marte JM, Moy B, Blackwell KL, Puhalla SL, Ibrahim N, Moynihan TJ, Nangia J, Tung N, Burns R, Rimawi MF, Krop IE, Wolff AC, Winer EP, Lin NU, Consortium T. Pre- and Postoperative Neratinib for HER2-Positive Breast Cancer Brain Metastases: Translational Breast Cancer Research Consortium 022. Clinical Breast Cancer 2019, 20: 145-151.e2. PMID: 31558424, PMCID: PMC7035200, DOI: 10.1016/j.clbc.2019.07.011.Peer-Reviewed Original ResearchMeSH KeywordsAdministration, OralAdultAntineoplastic Combined Chemotherapy ProtocolsBrainBrain NeoplasmsBreastBreast NeoplasmsChemotherapy, AdjuvantCraniotomyDrug Administration ScheduleFemaleHumansMiddle AgedNeoadjuvant TherapyPilot ProjectsQuinolinesReceptor, ErbB-2Tissue DistributionTreatment OutcomeConceptsCentral nervous system penetrationCerebrospinal fluidBrain metastasesStudy treatmentDisease progressionHER2-positive breast cancer brain metastasesHER2-positive metastatic breast cancerHER2-positive brain metastasesBreast cancer brain metastasesGrade 3 diarrheaCancer brain metastasesMetastatic breast cancerCentral nervous systemResected tumor tissueBlood-based analysesNeratinib monotherapyPostoperative cyclesParenchymal tumorsStudy protocolBreast cancerTumor histopathologyPatientsNervous systemSmall cohortSurgical tissuesTBCRC 022: A Phase II Trial of Neratinib and Capecitabine for Patients With Human Epidermal Growth Factor Receptor 2–Positive Breast Cancer and Brain Metastases
Freedman RA, Gelman RS, Anders CK, Melisko ME, Parsons HA, Cropp AM, Silvestri K, Cotter CM, Componeschi KP, Marte JM, Connolly RM, Moy B, Van Poznak CH, Blackwell KL, Puhalla SL, Jankowitz RC, Smith KL, Ibrahim N, Moynihan TJ, O’Sullivan C, Nangia J, Niravath P, Tung N, Pohlmann PR, Burns R, Rimawi MF, Krop IE, Wolff AC, Winer EP, Lin NU, . TBCRC 022: A Phase II Trial of Neratinib and Capecitabine for Patients With Human Epidermal Growth Factor Receptor 2–Positive Breast Cancer and Brain Metastases. Journal Of Clinical Oncology 2019, 37: jco.18.01511. PMID: 30860945, PMCID: PMC6494354, DOI: 10.1200/jco.18.01511.Peer-Reviewed Original ResearchConceptsCNS objective response rateObjective response rateHER2-positive breast cancer brain metastasesBreast cancer brain metastasesCancer brain metastasesBrain metastasesBreast cancerCommon grade 3 toxicitiesHER2-positive brain metastasesMedian progression-free survivalHuman epidermal growth factor receptor 2Epidermal growth factor receptor 2Human epidermal growth factor receptorEfficacy of HER2Non-CNS progressionGrade 3 toxicityPrimary end pointPhase II trialProgression-free survivalGrowth factor receptor 2Positive breast cancerProgressive neurologic signsEvidence-based treatmentsFactor receptor 2Epidermal growth factor receptor