2024
Circulating tumor DNA fraction predicts residual cancer burden post-neoadjuvant chemotherapy in triple negative breast cancer
Shan N, Gould B, Wang X, Bonora G, Blenman K, Foldi J, Campos G, Walsh M, Du P, Pusztai L. Circulating tumor DNA fraction predicts residual cancer burden post-neoadjuvant chemotherapy in triple negative breast cancer. The Journal Of Liquid Biopsy 2024, 6: 100168. DOI: 10.1016/j.jlb.2024.100168.Peer-Reviewed Original ResearchTriple negative breast cancerResidual cancer burdenCirculating tumor DNANegative breast cancerPathological responsePost-NACBreast cancerPlasma circulating tumor DNATriple negative breast cancer patientsResidual cancer burden scoreCirculating tumour DNA fractionPost-neoadjuvant chemotherapyPre-NAC samplesWeekly nab-paclitaxelTumor DNA methylation profilesTumor DNA fractionHot spot mutationsYouden's J statisticNab-paclitaxelPre-NACTumor variantsTumor DNATumor fractionClinical trialsDNA methylation profiles
2022
Tumor immune microenvironment of self-identified African American and non-African American triple negative breast cancer
Marczyk M, Qing T, O’Meara T, Yagahoobi V, Pelekanou V, Bai Y, Reisenbichler E, Cole KS, Li X, Gunasekharan V, Ibrahim E, Fanucci K, Wei W, Rimm DL, Pusztai L, Blenman KRM. Tumor immune microenvironment of self-identified African American and non-African American triple negative breast cancer. Npj Breast Cancer 2022, 8: 88. PMID: 35869114, PMCID: PMC9307813, DOI: 10.1038/s41523-022-00449-3.Peer-Reviewed Original ResearchTumor immune microenvironmentImmune microenvironmentTriple-negative breast cancer tissuesTriple-negative breast cancerAfrican AmericansImmune checkpoint inhibitorsTumor mutation burdenNegative breast cancerBreast cancer tissuesImmune-related pathwaysStromal TILsCheckpoint inhibitorsImmune exclusionClinical outcomesPD-L1Self-identified African AmericansCancer patientsImmune infiltrationBreast cancerMutation burdenCancer tissuesPredictive signatureMRNA expressionTherapeutic agentsPatientsAnalysis of the genomic landscapes of Barbadian and Nigerian women with triple negative breast cancer
Hercules SM, Liu X, Bassey-Archibong BBI, Skeete DHA, Smith Connell S, Daramola A, Banjo AA, Ebughe G, Agan T, Ekanem IO, Udosen J, Obiorah C, Ojule AC, Misauno MA, Dauda AM, Egbujo EC, Hercules JC, Ansari A, Brain I, MacColl C, Xu Y, Jin Y, Chang S, Carpten JD, Bédard A, Pond GR, Blenman KRM, Manojlovic Z, Daniel JM. Analysis of the genomic landscapes of Barbadian and Nigerian women with triple negative breast cancer. Cancer Causes & Control 2022, 33: 831-841. PMID: 35384527, PMCID: PMC9085672, DOI: 10.1007/s10552-022-01574-x.Peer-Reviewed Original ResearchConceptsWhole-exome sequencingNegative breast cancerBreast cancerPurposeTriple-negative breast cancerAggressive breast cancer subtypeTriple-negative breast cancerMultisite cross-sectional studyExome sequencingFormalin-fixed paraffin-embedded samplesMutational profileCross-sectional studyBreast cancer subtypesNon-tumor samplesParaffin-embedded samplesCancer Genome AtlasTNBC casesPoor survivalHigh prevalenceTNBC samplesHigh-frequency alterationsAmerican cohortConclusionThis studyFrequency of mutationsCancer subtypesNigerian womenPredictive Markers of Response to Neoadjuvant Durvalumab with Nab-Paclitaxel and Dose-Dense Doxorubicin/Cyclophosphamide in Basal-Like Triple-Negative Breast Cancer.
Blenman KRM, Marczyk M, Karn T, Qing T, Li X, Gunasekharan V, Yaghoobi V, Bai Y, Ibrahim EY, Park T, Silber A, Wolf DM, Reisenbichler E, Denkert C, Sinn BV, Rozenblit M, Foldi J, Rimm DL, Loibl S, Pusztai L. Predictive Markers of Response to Neoadjuvant Durvalumab with Nab-Paclitaxel and Dose-Dense Doxorubicin/Cyclophosphamide in Basal-Like Triple-Negative Breast Cancer. Clinical Cancer Research 2022, 28: 2587-2597. PMID: 35377948, PMCID: PMC9464605, DOI: 10.1158/1078-0432.ccr-21-3215.Peer-Reviewed Original ResearchConceptsBasal-like triple-negative breast cancerPathologic complete responseResidual diseaseNeoadjuvant durvalumabDNA damage repairSomatic mutationsBreast cancerWnt/β-cateninHigh expressionTriple-negative breast cancerBasal-Like TripleDoxorubicin/cyclophosphamideDNA repairTumor mutation burdenRNA sequencingEpithelial-mesenchymal transitionFive-gene signatureB-cell markersCancer driversEnrichment analysisNegative breast cancerDamage repairGene expressionJAK-STATCell cycle
2021
Quantitative assessment of the immune microenvironment in African American Triple Negative Breast Cancer: a case–control study
Yaghoobi V, Moutafi M, Aung TN, Pelekanou V, Yaghoubi S, Blenman K, Ibrahim E, Vathiotis IA, Shafi S, Sharma A, O’Meara T, Fernandez AI, Pusztai L, Rimm DL. Quantitative assessment of the immune microenvironment in African American Triple Negative Breast Cancer: a case–control study. Breast Cancer Research 2021, 23: 113. PMID: 34906209, PMCID: PMC8670126, DOI: 10.1186/s13058-021-01493-w.Peer-Reviewed Original ResearchConceptsNegative breast cancerT cellsTumor microenvironmentAA patientsImmune cellsAA tumorsBreast cancerPurposeTriple-negative breast cancerAfrican AmericansTriple-negative breast cancerCase-control studySignificant differencesActivated T cellsImmunologic biomarkersPD-L1Lymphocytic infiltrationLymphoid infiltrationImmune microenvironmentControl cohortTNBC tumorsMyeloid markersQuantitative immunofluorescenceMean expression levelPatientsTNBCCharacterization of the tumor immune microenvironment of triple-negative breast cancer (TNBC) patients who self-identify as African American (AA) or non-African American (NonAA).
Blenman K, Marczyk M, Qing T, O'Meara T, Yaghoobi V, Pelekanou V, Bai Y, Reisenbichler E, Li X, Gunasekharan V, Ibrahim E, Rimm D, Pusztai L, Cole K. Characterization of the tumor immune microenvironment of triple-negative breast cancer (TNBC) patients who self-identify as African American (AA) or non-African American (NonAA). Journal Of Clinical Oncology 2021, 39: 564-564. DOI: 10.1200/jco.2021.39.15_suppl.564.Peer-Reviewed Original ResearchTriple-negative breast cancerTumor immune microenvironmentAA patientsImmune microenvironmentWhole-exome sequencingAfrican AmericansTriple-negative breast cancer patientsYale Cancer CenterImmune checkpoint inhibitorsPD-L1 positivityPD-L1 expressionYear of diagnosisBreast cancer patientsCytokines/chemokinesImmune cell compositionTumor mutational burdenGermline whole-exome sequencingAge of diagnosisNegative breast cancerCorresponding clinical dataAllograft rejection pathwayNon-African AmericansSomatic mutationsFatty acid metabolismCheckpoint inhibitors
2020
Comparison of PD-L1 protein expression between primary tumors and metastatic lesions in triple negative breast cancers
Rozenblit M, Huang R, Danziger N, Hegde P, Alexander B, Ramkissoon S, Blenman K, Ross JS, Rimm DL, Pusztai L. Comparison of PD-L1 protein expression between primary tumors and metastatic lesions in triple negative breast cancers. Journal For ImmunoTherapy Of Cancer 2020, 8: e001558. PMID: 33239417, PMCID: PMC7689582, DOI: 10.1136/jitc-2020-001558.Peer-Reviewed Original ResearchConceptsPD-L1 positivity ratePD-L1 positivityPD-L1 expressionDifferent metastatic sitesPrimary tumorMetastatic sitesPositivity rateImmune cellsMetastatic lesionsTumor cellsPD-L1 protein expressionTriple-negative breast cancerMore primary tumorsTriple negative breast cancer tumorsPrimary breast lesionsPrimary outcome measureSoft tissueNegative breast cancerLow positivity rateBreast cancer tumorsBone metastasesFoundation MedicineLymph nodesPD-L1Spearman correlation coefficientImmunological Differences Between Immune-Rich Estrogen Receptor–Positive and Immune-Rich Triple-Negative Breast Cancers
O’Meara T, Marczyk M, Qing T, Yaghoobi V, Blenman K, Cole K, Pelekanou V, Rimm DL, Pusztai L. Immunological Differences Between Immune-Rich Estrogen Receptor–Positive and Immune-Rich Triple-Negative Breast Cancers. JCO Precision Oncology 2020, 4: po.19.00350. PMID: 32923897, PMCID: PMC7446500, DOI: 10.1200/po.19.00350.Peer-Reviewed Original ResearchER-positive breast cancerTriple-negative BCM2-like macrophagesTumor-infiltrating lymphocytesBreast cancerImmune-related genesEstrogen receptor-positive breast cancerImmuno-oncology therapeutic targetsRegulatory T cell markersReceptor-positive breast cancerTriple-negative breast cancerImmune activation markersT-cell markersImmune cell markersM1-like macrophagesDifferent immunotherapy strategiesBreast Cancer International ConsortiumNegative breast cancerImmuno-oncology trialsTGF-β pathwayAntitumor immunityCancer Genome AtlasImmunotherapy strategiesActivation markersImmune microenvironment