2014
Preanalytical variables and phosphoepitope expression in FFPE tissue: quantitative epitope assessment after variable cold ischemic time
Vassilakopoulou M, Parisi F, Siddiqui S, England AM, Zarella ER, Anagnostou V, Kluger Y, Hicks DG, Rimm DL, Neumeister VM. Preanalytical variables and phosphoepitope expression in FFPE tissue: quantitative epitope assessment after variable cold ischemic time. Laboratory Investigation 2014, 95: 334-341. PMID: 25418580, DOI: 10.1038/labinvest.2014.139.Peer-Reviewed Original ResearchConceptsCold ischemic timeIschemic timeFormalin fixationCompanion diagnostic testingCancer patientsBreast cancerTissue microarrayPhospho-HSP27Breast tumorsDiagnostic testingQuantitative immunofluorescenceAQUA technologyPreanalytical variablesGene expression profilingLoss of antigenicityTissue samplesReproducible assessmentProtein levelsConfidence intervalsSpecimen collectionExpression levelsPhosphorylation levelsAntigenicityRoutine usageResearch settingsA tissue quality index: an intrinsic control for measurement of effects of preanalytical variables on FFPE tissue
Neumeister VM, Parisi F, England AM, Siddiqui S, Anagnostou V, Zarrella E, Vassilakopolou M, Bai Y, Saylor S, Sapino A, Kluger Y, Hicks DG, Bussolati G, Kwei S, Rimm DL. A tissue quality index: an intrinsic control for measurement of effects of preanalytical variables on FFPE tissue. Laboratory Investigation 2014, 94: 467-474. PMID: 24535259, PMCID: PMC4030875, DOI: 10.1038/labinvest.2014.7.Peer-Reviewed Original ResearchConceptsCold ischemic timeIschemic timeQuantitative immunofluorescenceLevel of expressionTissue qualityER expression levelsBreast cancer casesExpression levelsFormalin fixationInformative epitopesValidation cohortCancer casesBreast cohortProtein statusGlobal assessmentPatient samplesTissue cohortPreanalytical variablesEpitope expressionCohortIntrinsic controlMeasurement of effectsQuality IndexFFPE tissuesEpitopes
2012
Quantitative Assessment of Effect of Preanalytic Cold Ischemic Time on Protein Expression in Breast Cancer Tissues
Neumeister VM, Anagnostou V, Siddiqui S, England AM, Zarrella ER, Vassilakopoulou M, Parisi F, Kluger Y, Hicks DG, Rimm DL. Quantitative Assessment of Effect of Preanalytic Cold Ischemic Time on Protein Expression in Breast Cancer Tissues. Journal Of The National Cancer Institute 2012, 104: 1815-1824. PMID: 23090068, PMCID: PMC3514166, DOI: 10.1093/jnci/djs438.Peer-Reviewed Original ResearchMeSH KeywordsA Kinase Anchor ProteinsBiomarkers, TumorBiopsy, Large-Core NeedleBreast NeoplasmsCold IschemiaConfounding Factors, EpidemiologicFalse Negative ReactionsFemaleFixativesFluorescent Antibody TechniqueFormaldehydeGene Expression Regulation, NeoplasticHumansHypoxia-Inducible Factor 1, alpha SubunitKi-67 AntigenMastectomy, SegmentalMatched-Pair AnalysisMinor Histocompatibility AntigensProspective StudiesProto-Oncogene ProteinsReceptor, ErbB-2Receptors, EstrogenReceptors, ProgesteroneResearch DesignTime FactorsConceptsCold ischemic timeIschemic timeBreast cancer tissuesEstrogen receptorCancer tissuesLoss of antigenicityBreast cancer resectionProtein expressionCore needle biopsyCompanion diagnostic testsConditions of hypoxiaFalse-negative resultsBreast cancer biomarkersCancer resectionProgesterone receptorNeedle biopsyRecent guidelinesCold ischemiaBreast cancerTissue microarrayEvidence of lossQuantitative immunofluorescenceDiagnostic testsAntigenicityAQUA method
2011
Quantitative assessment shows loss of antigenic epitopes as a function of pre-analytic variables
Bai Y, Tolles J, Cheng H, Siddiqui S, Gopinath A, Pectasides E, Camp RL, Rimm DL, Molinaro AM. Quantitative assessment shows loss of antigenic epitopes as a function of pre-analytic variables. Laboratory Investigation 2011, 91: 1253-1261. PMID: 21519325, PMCID: PMC3145004, DOI: 10.1038/labinvest.2011.75.Peer-Reviewed Original ResearchConceptsCore needle biopsyCold ischemic timePre-analytic variablesNeedle biopsyEstrogen receptorIschemic timeTumor resectionTumor resection specimensAntigenic lossResection specimensTissue biomarkersTotal AktBiopsyPhospho-AktQuantitative immunofluorescencePhospho-ERKPhospho-S6K1Antigenic epitopesTotal ERKResectionTotal proteinCytokeratinImmunological methodsAntigenicitySignificant changes
2010
Pre-analytic variables and phospho-specific antibodies: the Achilles heel of immunohistochemistry
Siddiqui S, Rimm DL. Pre-analytic variables and phospho-specific antibodies: the Achilles heel of immunohistochemistry. Breast Cancer Research 2010, 12: 113. PMID: 21176180, PMCID: PMC3046444, DOI: 10.1186/bcr2782.Peer-Reviewed Original ResearchConceptsCold ischemic timePre-analytic variablesIschemic timeCore needle biopsyCompanion diagnostic testingCompanion diagnostic testsBreast cancer researchProgesterone receptorNeedle biopsyBreast cancerEstrogen receptorCritical therapyDiagnostic testingDiagnostic testsClassic markersImmunohistochemistryCancer researchPhospho-specific antibodiesReceptorsMarkersAchilles heel