Standardization of Epidermal Growth Factor Receptor (EGFR) Measurement by Quantitative Immunofluorescence and Impact on Antibody-Based Mutation Detection in Non–Small Cell Lung Cancer
Dimou A, Agarwal S, Anagnostou V, Viray H, Christensen S, Rothberg B, Zolota V, Syrigos K, Rimm DL. Standardization of Epidermal Growth Factor Receptor (EGFR) Measurement by Quantitative Immunofluorescence and Impact on Antibody-Based Mutation Detection in Non–Small Cell Lung Cancer. American Journal Of Pathology 2011, 179: 580-589. PMID: 21722621, PMCID: PMC3157192, DOI: 10.1016/j.ajpath.2011.04.031.Peer-Reviewed Original ResearchConceptsNon-small cell lung cancerCell lung cancerPrognostic valueMutation-specific antibodiesLung cancerQuantitative immunofluorescenceEpidermal growth factor receptor (EGFR) protein expressionIndependent NSCLC cohortsPopulation-based cohortEGFR mutation rateReceptor protein expressionTotal proteinFalse-positive casesPrediction of responseWestern blot analysisNSCLC cohortRetrospective cohortReceptor measurementsYale cohortEGFR expressionCohortEGFRAQUA technologyProtein expressionAntibodiesQuantitative 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