2023
Assessment of stained direct cytology smears of breast cancer for whole transcriptome and targeted messenger RNA sequencing
Marczyk M, Fu C, Lau R, Du L, Trevarton A, Sinn B, Gould R, Pusztai L, Hatzis C, Symmans W. Assessment of stained direct cytology smears of breast cancer for whole transcriptome and targeted messenger RNA sequencing. Cancer Cytopathology 2023, 131: 289-299. PMID: 36650408, PMCID: PMC10614161, DOI: 10.1002/cncy.22679.Peer-Reviewed Original ResearchMeSH KeywordsBreast NeoplasmsFemaleFormaldehydeGene Expression ProfilingHumansParaffin EmbeddingRNASequence Analysis, RNATissue FixationTranscriptomeConceptsCytology smearsBreast cancerConcordance correlation coefficientTumor tissue samplesParaffin-embedded sectionsClinical diagnostic proceduresSurgical resectionRNA sequencingTumor stromaCytologic specimensDiagnostic proceduresLin's concordance correlation coefficientPapanicolaou stainCancerTissue samplesDNA mutation testingSmearsSimilar concordanceTranscriptome RNA-SeqDiagnostic cytologyAllele fractionExpression levelsRNA-seqExpression of genesGene expression levels
2021
Targeted RNAseq assay incorporating unique molecular identifiers for improved quantification of gene expression signatures and transcribed mutation fraction in fixed tumor samples
Fu C, Marczyk M, Samuels M, Trevarton AJ, Qu J, Lau R, Du L, Pappas T, Sinn BV, Gould RE, Pusztai L, Hatzis C, Symmans WF. Targeted RNAseq assay incorporating unique molecular identifiers for improved quantification of gene expression signatures and transcribed mutation fraction in fixed tumor samples. BMC Cancer 2021, 21: 114. PMID: 33541297, PMCID: PMC7860187, DOI: 10.1186/s12885-021-07814-8.Peer-Reviewed Original ResearchConceptsPolymerase chain reactionParaffin-embedded tumor tissue samplesConcordance correlation coefficientFresh frozenFFPE samplesPrimary breast cancerMulti-gene signatureTumor tissue samplesActivating point mutationMutant allele fractionReverse transcriptionKey breast cancer genesGene expression signaturesBreast cancer genesPIK3CA mutationsBackgroundOur objectiveBreast cancerWhole transcriptome RNAseqTumor samplesLin's concordance correlation coefficientHormone receptorsFF samplesTissue samplesExpression signaturesChain reaction
2019
The impact of RNA extraction method on accurate RNA sequencing from formalin-fixed paraffin-embedded tissues
Marczyk M, Fu C, Lau R, Du L, Trevarton AJ, Sinn BV, Gould RE, Pusztai L, Hatzis C, Symmans WF. The impact of RNA extraction method on accurate RNA sequencing from formalin-fixed paraffin-embedded tissues. BMC Cancer 2019, 19: 1189. PMID: 31805884, PMCID: PMC6896723, DOI: 10.1186/s12885-019-6363-0.Peer-Reviewed Original ResearchConceptsBreast cancerFresh frozenParaffin-embedded tumor samplesFF samplesFFPE samplesConcordance correlation coefficientMixed-effects model analysisBreast cancer signaturesQiagen RNeasy kitWhole transcriptome RNA sequencingParaffin-embedded tissuesTranscriptome RNA sequencingLinear mixed-effects model analysisGene expression signaturesDifferent kitsClinical trialsGene signatureTumor samplesGene expressionTranslational researchCancerTissue samplesExpression signaturesArchival formalinSimilar concordance
2011
Proposals for uniform collection of biospecimens from neoadjuvant breast cancer clinical trials: timing and specimen types
Loi S, Symmans WF, Bartlett J, Fumagalli D, Veer L, Forbes JF, Bedard P, Denkert C, Zujewski J, Viale G, Pusztai L, Esserman LJ, Leyland-Jones BR. Proposals for uniform collection of biospecimens from neoadjuvant breast cancer clinical trials: timing and specimen types. The Lancet Oncology 2011, 12: 1162-1168. PMID: 21684810, DOI: 10.1016/s1470-2045(11)70117-6.Peer-Reviewed Original ResearchConceptsNorth American Breast Cancer GroupBreast International GroupClinical trialsBiopsy procedureNeoadjuvant breast cancer trialsNeoadjuvant clinical trialsBreast cancer clinical trialsBreast cancer groupBreast cancer trialsStart of treatmentCancer clinical trialsNational Cancer InstituteNeoadjuvant trialsDefinitive surgeryNeoadjuvant treatmentCancer groupStudy protocolCancer trialsBreast cancerCancer InstituteUniform collectionTumor tissueBlood collectionTrialsSpecimen types
2008
Commercialized Multigene Predictors of Clinical Outcome for Breast Cancer
Ross JS, Hatzis C, Symmans WF, Pusztai L, Hortobágyi GN. Commercialized Multigene Predictors of Clinical Outcome for Breast Cancer. The Oncologist 2008, 13: 477-493. PMID: 18515733, DOI: 10.1634/theoncologist.2007-0248.Peer-Reviewed Original ResearchMeSH KeywordsBiomarkers, TumorBreast NeoplasmsCost-Benefit AnalysisDevice ApprovalFemaleGene Expression ProfilingHumansMolecular Diagnostic TechniquesParaffin EmbeddingPredictive Value of TestsPrognosisReceptors, EstrogenReverse Transcriptase Polymerase Chain ReactionUnited StatesUnited States Food and Drug AdministrationConceptsQuantitative multiplex real-time polymerase chain reactionLymph node positiveValidation clinical trialEfficacy of tamoxifenER-positive patientsPredictive testRegulatory approval statusOncotype DX testCurrent clinical utilityReal-time polymerase chain reactionCytochrome P450 CYP2D6High accrual rateMultiplex real-time polymerase chain reactionParaffin-embedded tissuesThird-party payorsProspective trialYounger patientsNode positiveClinical outcomesOncotype DXPatient eligibilityMultigene assaysPolymerase chain reactionClinical trialsBreast cancer