2020
A Phase II Study of Pembrolizumab in Combination With Palliative Radiotherapy for Hormone Receptor-positive Metastatic Breast Cancer
Barroso-Sousa R, Krop IE, Trippa L, Tan-Wasielewski Z, Li T, Osmani W, Andrews C, Dillon D, Richardson ET, Pastorello RG, Winer EP, Mittendorf EA, Bellon JR, Schoenfeld JD, Tolaney SM. A Phase II Study of Pembrolizumab in Combination With Palliative Radiotherapy for Hormone Receptor-positive Metastatic Breast Cancer. Clinical Breast Cancer 2020, 20: 238-245. PMID: 32113750, DOI: 10.1016/j.clbc.2020.01.012.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAntibodies, Monoclonal, HumanizedAntineoplastic Agents, ImmunologicalBiomarkers, TumorBreastBreast NeoplasmsCarcinoma, Ductal, BreastChemoradiotherapyDrug Administration ScheduleFemaleHumansInfusions, IntravenousMiddle AgedPalliative CareProgrammed Cell Death 1 ReceptorProgression-Free SurvivalReceptor, ErbB-2Receptors, EstrogenReceptors, ProgesteroneResponse Evaluation Criteria in Solid TumorsConceptsMetastatic breast cancerHormone receptor-positive metastatic breast cancerProgression-free survivalRadiation therapyObjective responseOverall survivalBreast cancerResponse rateMedian progression-free survivalCause adverse eventsGrade 3 eventsMedian prior linesMedian overall survivalObjective response ratePalliative radiation therapyPhase II studyTumor-infiltrating lymphocytesLymph node lesionsOverall response rateEpidermal growth factor receptorEligible patientsExploratory endpointsGrowth factor receptorPalliative radiotherapyPrimary endpoint
2019
A phase II study of pembrolizumab in combination with palliative radiotherapy (RT) for hormone receptor-positive (HR+) metastatic breast cancer (MBC).
Barroso-Sousa R, Krop I, Trippa L, Tan-Wasielewski Z, Li T, Osmani W, Andrews C, Dillon D, Richardson E, Winer E, Mittendorf E, Schoenfeld J, Tolaney S. A phase II study of pembrolizumab in combination with palliative radiotherapy (RT) for hormone receptor-positive (HR+) metastatic breast cancer (MBC). Journal Of Clinical Oncology 2019, 37: 1047-1047. DOI: 10.1200/jco.2019.37.15_suppl.1047.Peer-Reviewed Original ResearchMetastatic breast cancerNeutrophil/lymphocyte ratioObjective response rateProgression-free survivalTumor-infiltrating lymphocytesPalliative radiotherapyAdverse eventsHormone receptor-positive metastatic breast cancerPhase II single-arm studyMedian progression-free survivalCause adverse eventsDistant tumor responsesECOG PS 1Prior cytotoxic therapyImmune checkpoint inhibitorsPD-L1 expressionPD-L1 statusPhase II studySingle-arm studyTotal RT doseUnexpected adverse eventsECOG PSEligible ptsRECIST v1.1Measurable lesions