2021
The impact of tumor epithelial and microenvironmental heterogeneity on treatment responses in HER2-positive breast cancer
Janiszewska M, Stein S, Filho O, Eng J, Kingston NL, Harper NW, Rye IH, Alečković M, Trinh A, Murphy KC, Marangoni E, Cristea S, Oakes B, Winer EP, Krop I, Russnes HG, Spellman PT, Bucher E, Hu Z, Chin K, Gray JW, Michor F, Polyak K. The impact of tumor epithelial and microenvironmental heterogeneity on treatment responses in HER2-positive breast cancer. JCI Insight 2021, 6: e147617. PMID: 33886505, PMCID: PMC8262355, DOI: 10.1172/jci.insight.147617.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAged, 80 and overAntibodies, Monoclonal, HumanizedAntineoplastic Agents, ImmunologicalBreast NeoplasmsClass I Phosphatidylinositol 3-KinasesDNA Copy Number VariationsDrug Resistance, NeoplasmEpithelial CellsFemaleFibroblastsHumansMacrophagesMiddle AgedMutationNeoplasm TransplantationReceptor, ErbB-2TrastuzumabTumor MicroenvironmentVesicular Transport ProteinsConceptsBreast cancerTherapeutic resistanceHuman epidermal growth factor receptor 2HER2-positive breast cancerEpidermal growth factor receptor 2Patient-derived xenograft modelsLymphatic vessel endothelial hyaluronan receptorHER2-targeted therapiesGrowth factor receptor 2Impact of tumorFibroblastic reticular cellsFactor receptor 2Tumor epithelial cellsIntratumor heterogeneityDivergent cellular phenotypesResistance-conferring mutationsClinical outcomesPIK3CA mutationsTreatment responseClinical challengeDifferent therapiesFrequency of cellsXenograft modelReceptor 2Stromal determinants
2020
A multiparameter classifier to predict response to lapatinib plus trastuzumab (LT) without chemotherapy in HER2+ breast cancer (BC).
Veeraraghavan J, Gutierrez C, De Angelis C, Wang T, Pascual T, Weigelt B, Galvan P, Rexer B, Forero-Torres A, Wolff A, Nanda R, Storniolo A, Krop I, Goetz M, Reis-Filho J, Hilsenbeck S, Prat A, Osborne C, Schiff R, Rimawi M. A multiparameter classifier to predict response to lapatinib plus trastuzumab (LT) without chemotherapy in HER2+ breast cancer (BC). Journal Of Clinical Oncology 2020, 38: 1011-1011. DOI: 10.1200/jco.2020.38.15_suppl.1011.Peer-Reviewed Original ResearchPIK3CA mutation statusBreast cancerHER2 ratioMutation statusPathologic complete response rateIntratumor heterogeneityRate of CTXComplete response rateData cohortDe-escalation strategiesLT therapyEvaluable patientsUnselected patientsClinical trialsTargeted therapyProspective validationHER2 geneResponse rateAdditional casesHER2PatientsHER2 proteinCohortPAM50Protein levels