2022
Intratumour heterogeneity, from hypothesis to the clinic
Shan NL, Kahn A, Pusztai L. Intratumour heterogeneity, from hypothesis to the clinic. British Journal Of Cancer 2022, 128: 459-460. PMID: 36216884, PMCID: PMC9938204, DOI: 10.1038/s41416-022-02008-w.Commentaries, Editorials and LettersExamination of Low ERBB2 Protein Expression in Breast Cancer Tissue
Fernandez AI, Liu M, Bellizzi A, Brock J, Fadare O, Hanley K, Harigopal M, Jorns JM, Kuba MG, Ly A, Podoll M, Rabe K, Sanders MA, Singh K, Snir OL, Soong TR, Wei S, Wen H, Wong S, Yoon E, Pusztai L, Reisenbichler E, Rimm DL. Examination of Low ERBB2 Protein Expression in Breast Cancer Tissue. JAMA Oncology 2022, 8: 1-4. PMID: 35113160, PMCID: PMC8814969, DOI: 10.1001/jamaoncol.2021.7239.Peer-Reviewed Original ResearchConceptsBreast cancer biopsiesT-DXdCancer biopsiesLarge randomized clinical trialsRandomized clinical trialsERBB2 protein expressionCentral pathology laboratoryBreast cancer tissuesAmerican Pathologists surveysStudy of concordanceTrastuzumab deruxtecanERBB2 positivityPatient populationClinical trialsScore 0Breast cancerImmunohistochemistry scoreCancer tissuesIHC assaysPatientsPathology laboratoryProtein expressionBiopsyIHCConcordance
2018
286PD Post-treatment biopsies show evidence of cell cycle arrest and immune cell infiltration into tumors of ladiratuzumab vedotin-treated advanced breast cancer patients
Specht J, Pusztai L, Forero-Torres A, Mita M, Weise A, Krop I, Grosse-Wilde A, Wang Z, Li M, Hengel S, Garfin P, Means G, Onsum M, Modi S. 286PD Post-treatment biopsies show evidence of cell cycle arrest and immune cell infiltration into tumors of ladiratuzumab vedotin-treated advanced breast cancer patients. Annals Of Oncology 2018, 29: viii92. DOI: 10.1093/annonc/mdy272.278.Peer-Reviewed Original Research
2016
A prospective comparison of ER, PR, Ki67 and gene expression in paired sequential core biopsies of primary, untreated breast cancer
Hadad SM, Jordan LB, Roy PG, Purdie CA, Iwamoto T, Pusztai L, Moulder-Thompson SL, Thompson AM. A prospective comparison of ER, PR, Ki67 and gene expression in paired sequential core biopsies of primary, untreated breast cancer. BMC Cancer 2016, 16: 745. PMID: 27658825, PMCID: PMC5034430, DOI: 10.1186/s12885-016-2788-x.Peer-Reviewed Original ResearchIngenuity Pathway AnalysisBreast cancerCore biopsyDrug therapyOperable breast cancerSequential core biopsiesUntreated breast cancerHormone receptor statusPrimary breast cancerPathway analysisPR immunohistochemistryUntreated patientsReceptor statusPrimary cancerNon-treatment controlBiomarker statusProspective comparisonBiomarker changesDrug interventionKi67 scoreBiopsyBiomarker effectsDrug efficacyKi67MRNA expressionQuantitative assessment of the spatial heterogeneity of tumor-infiltrating lymphocytes in breast cancer
Mani NL, Schalper KA, Hatzis C, Saglam O, Tavassoli F, Butler M, Chagpar AB, Pusztai L, Rimm DL. Quantitative assessment of the spatial heterogeneity of tumor-infiltrating lymphocytes in breast cancer. Breast Cancer Research 2016, 18: 78. PMID: 27473061, PMCID: PMC4966732, DOI: 10.1186/s13058-016-0737-x.Peer-Reviewed Original ResearchConceptsIntraclass correlation coefficientQuantitative immunofluorescenceBreast cancerSame cancerSingle biopsyMultiplexed quantitative immunofluorescenceTumor-infiltrating lymphocytesPotential predictive markerPrimary breast carcinomaCytokeratin-positive epithelial cellsCD20-positive lymphocytesCD8 levelsLymphocyte scoreQIF scoresLymphocyte countLymphocyte subpopulationsMultiple biopsiesSubpopulation countsPredictive markerPrognostic informationBreast carcinomaBiopsyB lymphocytesCD3Breast tumors
2015
Reproducibility of homologous recombination deficiency (HRD) scores in biopsies of triple negative breast cancer (TNBC) tumors.
Timms K, Chagpar A, Wali V, Bossuyt V, Reid J, Gutin A, Neff C, Hofstatter E, Lanchbury J, Pusztai L. Reproducibility of homologous recombination deficiency (HRD) scores in biopsies of triple negative breast cancer (TNBC) tumors. Journal Of Clinical Oncology 2015, 33: 1091-1091. DOI: 10.1200/jco.2015.33.15_suppl.1091.Peer-Reviewed Original Research
2014
Gene Signature–Guided Dasatinib Therapy in Metastatic Breast Cancer
Pusztai L, Moulder S, Altan M, Kwiatkowski D, Valero V, Ueno NT, Esteva FJ, Avritscher R, Qi Y, Strauss L, Hortobagyi GN, Hatzis C, Symmans WF. Gene Signature–Guided Dasatinib Therapy in Metastatic Breast Cancer. Clinical Cancer Research 2014, 20: 5265-5271. PMID: 25172932, DOI: 10.1158/1078-0432.ccr-14-0800.Peer-Reviewed Original ResearchConceptsMetastatic breast cancerBreast cancerPredictive gene signaturesGene signatureClinical benefitBiopsy-related adverse eventsSingle-agent activityStable diseaseDasatinib therapyAdverse eventsUnderwent biopsyUnselected patientsPreclinical evidenceUnexpected toxicitiesThree-armPatientsSingle agentMolecular testingCLIA laboratoryDasatinib responseDasatinibBiopsyGene expression profilingCancerExpression profiling
2012
Use of next-generation sequencing (NGS) to detect high frequency of targetable alterations in primary and metastatic breast cancer (MBC).
Pusztai L, Yelensky R, Wang B, Avritscher R, Symmans W, Lipson D, Palmer G, Moulder S, Stephens P, Wu Y, Cronin M. Use of next-generation sequencing (NGS) to detect high frequency of targetable alterations in primary and metastatic breast cancer (MBC). Journal Of Clinical Oncology 2012, 30: 10559-10559. DOI: 10.1200/jco.2012.30.15_suppl.10559.Peer-Reviewed Original ResearchMetastatic breast cancerClinical trialsNext-generation sequencingNeedle biopsyBreast cancerGenomic alterationsClinical treatment optionsHER2 gene amplificationPatient selection approachAdjuvant therapyTargetable alterationsTreatment optionsPIK3CA mutationsNovel agentsERBB2 alterationsInvestigational drugsTherapeutic implicationsCancer-related genesBiopsyPredictive valueProspective testingNGS profilingDriver mutationsTherapyCancer