2022
Molecular testing opportunities on cytology effusion specimens: the pre-analytic effects of various body fluid cytology preparation methods on RNA extraction quality and targeted sequencing
Sura G, Tran K, Fu C, Du L, Marczyk M, Martinez Y, Tinnirello A, Gould R, Lau R, Symmans W. Molecular testing opportunities on cytology effusion specimens: the pre-analytic effects of various body fluid cytology preparation methods on RNA extraction quality and targeted sequencing. Journal Of The American Society Of Cytopathology 2022, 12: 10-19. PMID: 36270909, PMCID: PMC10644714, DOI: 10.1016/j.jasc.2022.09.003.Peer-Reviewed Original ResearchConceptsCell blocksCarnoy's solutionDiff-QuikFF samplesCytology laboratoryFFPE cell blocksMultigene expression signaturesConcordance correlation coefficientCell block sectionsParaffin-embedded sectionsMalignant effusionsEffusion specimensMolecular subtypesSurePath samplesCytospin preparationsCytologic methodsCytologic samplesSurePath preparationsDiagnostic approachClinical researchRNA sequencing analysisExpression signaturesHigh concordanceBlock sectionsFrozen cell pellets
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
2016
Prognostic value of 5-microRNA based signature in T2-T3N0 colon cancer
Bobowicz M, Skrzypski M, Czapiewski P, Marczyk M, Maciejewska A, Jankowski M, Szulgo-Paczkowska A, Zegarski W, Pawłowski R, Polańska J, Biernat W, Jaśkiewicz J, Jassem J. Prognostic value of 5-microRNA based signature in T2-T3N0 colon cancer. Clinical & Experimental Metastasis 2016, 33: 765-773. PMID: 27485175, PMCID: PMC5110606, DOI: 10.1007/s10585-016-9810-1.Peer-Reviewed Original ResearchConceptsDistant metastasis-free survivalColon cancerMMR statusShorter distant metastasis-free survivalEarly-stage colon cancerMiR-592 expressionGroup of patientsMetastasis-free survivalExpression signaturesCox univariate analysisStage colon cancerNormal colon mucosa samplesColon mucosa samplesMiRNA expression signaturesAdjuvant chemotherapyDistant relapseMiRNA expressionDistant metastasisMiR-423-5pCC patientsPrognostic significancePrognostic valueSuch therapyUnivariate analysisHigh risk