2023
Intratumor spatial heterogeneity in programmed death-ligand 1 (PD-L1) protein expression in early-stage breast cancer
Kahn A, Golestani R, Harigopal M, Pusztai L. Intratumor spatial heterogeneity in programmed death-ligand 1 (PD-L1) protein expression in early-stage breast cancer. Breast Cancer Research And Treatment 2023, 201: 289-298. PMID: 37378695, DOI: 10.1007/s10549-023-06977-1.Peer-Reviewed Original ResearchConceptsTriple-negative breast cancerPD-L1 expressionBreast cancerPD-L1Metastatic triple-negative breast cancerPD-L1 positive casesEarly-stage breast cancerPD-L1 protein expressionImmune checkpoint inhibitorsPD-L1 positivityPD-L1 statusProtein expressionWhole study populationPrimary breast tumorsNegative breast cancerConcordant negative resultsCheckpoint inhibitorsMultiple biopsiesPositive cancersCohen's kappa coefficientStudy populationE1L3N antibodyDiscordance rateBreast tumorsPositive cases
2020
Prospective multi-institutional evaluation of pathologist assessment of PD-L1 assays for patient selection in triple negative breast cancer
Reisenbichler ES, Han G, Bellizzi A, Bossuyt V, Brock J, Cole K, Fadare O, Hameed O, Hanley K, Harrison BT, Kuba MG, Ly A, Miller D, Podoll M, Roden AC, Singh K, Sanders MA, Wei S, Wen H, Pelekanou V, Yaghoobi V, Ahmed F, Pusztai L, Rimm DL. Prospective multi-institutional evaluation of pathologist assessment of PD-L1 assays for patient selection in triple negative breast cancer. Modern Pathology 2020, 33: 1746-1752. PMID: 32300181, PMCID: PMC8366569, DOI: 10.1038/s41379-020-0544-x.Peer-Reviewed Original ResearchConceptsTriple-negative breast cancerNegative breast cancerOverall percent agreementPD-L1Intraclass correlation coefficientBreast cancerAdvanced triple-negative breast cancerPD-L1 positive casesImmune cell stainingMultiple pathologistsPD-L1 scoringMulti-institutional evaluationLung cancer studiesAtezolizumab therapySP142 assaySP263 assaysPatient selectionSP263SP142US FoodDrug AdministrationPathologist's assessmentPositive casesReal-world settingPercent agreement