2024
Spatially resolved niche and tumor microenvironmental alterations in gastric cancer peritoneal metastases
Zhao J, Ong C, Srivastava S, Chia D, Ma H, Huang K, Sheng T, Ramnarayanan K, Ong X, Tay S, Hagihara T, Tan A, Teo M, Tan Q, Ng G, Tan J, Ng M, Gwee Y, Walsh R, Law J, Shabbir A, Kim G, Tay Y, Her Z, Leoncini G, Teh B, Hong J, Tay R, Teo C, Dings M, Bijlsma M, Lum J, Mathur S, Pietrantonio F, Blum S, van Laarhoven H, Klempner S, Yong W, So J, Chen Q, Tan P, Sundar R. Spatially resolved niche and tumor microenvironmental alterations in gastric cancer peritoneal metastases. Gastroenterology 2024 PMID: 39147169, DOI: 10.1053/j.gastro.2024.08.007.Peer-Reviewed Original ResearchPeritoneal metastasisTumor microenvironmentPrimary tumorTranscoelomic metastasisGastric cancerExpression of therapeutic targetsAssociated with poor prognosisGastric cancer peritoneal metastasisAssociated with increased riskHumanized mouse modelTherapeutic targetComprehensive multi-omics analysisTumor microenvironment signaturesTumor microenvironment alterationsDigital spatial profilingInvestigate molecular alterationsWhole-exome sequencingMatched normal tissuesStromal infiltrationComprehensive molecular characterizationLiver metastasesImmune compositionFGFR2b expressionImprove patient outcomesPredictive markerOncogenic aberrations in primary gastric cancer tumors to predict metachronous peritoneal metastasis.
Zhao J, Huang K, Chia D, Law J, Tan A, So J, Tan P, Sundar R. Oncogenic aberrations in primary gastric cancer tumors to predict metachronous peritoneal metastasis. Journal Of Clinical Oncology 2024, 42: 392-392. DOI: 10.1200/jco.2024.42.3_suppl.392.Peer-Reviewed Original ResearchPeritoneal metastasisPrimary tumorWhole-exome sequencingARID1A mutationsGastric cancerMedian follow-up durationGS tumorsPrimary tumors of patientsMetachronous peritoneal metastasesAssociated with PMFollow-up durationGastric cancer tumorsPoor survival outcomesPrimary GC tumorsMetachronous PMAdvanced tumorsCDH1 mutationsSurgical resectionOncogenic aberrationsSurvival outcomesClinical outcomesPoor prognosisFollowed-upProspective cohortRHOA mutations
2017
Genomic predictors of neoadjuvant chemotherapy (NACT) response in breast cancer (BC).
Wong A, Tan K, Sundar R, Ow S, Pang A, Yap H, Chan C, Hartman M, Iau P, Buhari S, Mogro M, Tan I, Wang L, Yang H, Goh B, Lee S. Genomic predictors of neoadjuvant chemotherapy (NACT) response in breast cancer (BC). Journal Of Clinical Oncology 2017, 35: e12122-e12122. DOI: 10.1200/jco.2017.35.15_suppl.e12122.Peer-Reviewed Original ResearchVariant allele frequencyNeoadjuvant chemotherapyPost-NACTPoor outcomeBC patientsBreast cancerPredictors of neoadjuvant chemotherapyEffect of neoadjuvant chemotherapyEmergent mutationsMean tumor sizePost-NACT tumorsSomatic single nucleotide variantsDiagnosed BC patientsSingle nucleotide variantsWhole-exome sequencingMatched normal DNABC relapseNOTCH2 mutationsTumor sizeClinical outcomesNucleotide variantsLesion reductionExome sequencingPatientsMutational landscapeWhole exome sequencing (WES) of multiple spatially distinct biopsies from single metastatic lesions to evaluate tumour heterogeneity and identify actionable truncal mutations (ATMs) in patients (pts) with advanced solid malignancies using a radiologically-guided single-pass percutaneous technique.
Heong V, Wee B, Goh S, Tay D, Lee X, Soo R, Lim J, Sundar R, Chee C, Lee S, Ow S, Goh B, Yong W, Wong A, Gopinathan A, Lim D, Pang B, Feroz M, Soong R, Tan D. Whole exome sequencing (WES) of multiple spatially distinct biopsies from single metastatic lesions to evaluate tumour heterogeneity and identify actionable truncal mutations (ATMs) in patients (pts) with advanced solid malignancies using a radiologically-guided single-pass percutaneous technique. Journal Of Clinical Oncology 2017, 35: 2550-2550. DOI: 10.1200/jco.2017.35.15_suppl.2550.Peer-Reviewed Original ResearchTumor mutational burdenWhole-exome sequencingMetastatic lesionsNSCLC ptsHigh tumor mutational burdenEvaluate tumor heterogeneityCheckpoint inhibitorsStable diseaseTumor shrinkageTruncal mutationsCore biopsyMutational burdenSolid malignanciesComplication rateNon-synonymous variantsTumor heterogeneityIntratumoral heterogeneitySubclonal diversityGenomic profilingPercutaneous techniquesExome sequencingMutational heterogeneityAkt inhibitorMedian amountPoor quality DNA