Featured Publications
Machine-learning model derived gene signature predictive of paclitaxel survival benefit in gastric cancer: results from the randomised phase III SAMIT trial
Sundar R, Kumarakulasinghe N, Chan Y, Yoshida K, Yoshikawa T, Miyagi Y, Rino Y, Masuda M, Guan J, Sakamoto J, Tanaka S, Tan A, Hoppe M, Jeyasekharan A, Ng C, De Simone M, Grabsch H, Lee J, Oshima T, Tsuburaya A, Tan P. Machine-learning model derived gene signature predictive of paclitaxel survival benefit in gastric cancer: results from the randomised phase III SAMIT trial. Gut 2021, 71: 676-685. PMID: 33980610, PMCID: PMC8921574, DOI: 10.1136/gutjnl-2021-324060.Peer-Reviewed Original ResearchConceptsDisease free survivalValidation cohortGastric cancerGene signatureSurvival benefitPac-SensitiveNo survival differenceSelection of patientsGC trialsFree survivalPaclitaxel chemotherapyCurative surgeryMetastatic patientsPredictive biomarkersTraining cohortSurvival differencesIndependent cohortNanoString panelGC patientsPaclitaxelPatientsNanoString profilingCohortGroup trialUFT
2023
1559P PD-L1 expression as a negative predictive biomarker in advanced esophageal squamous cell cancer treated with chemotherapy alone: A KMSubtraction derived analysis
Sachdeva M, Zhao J, Zhu K, Yap D, Wong N, Barr N, Sundar R. 1559P PD-L1 expression as a negative predictive biomarker in advanced esophageal squamous cell cancer treated with chemotherapy alone: A KMSubtraction derived analysis. Annals Of Oncology 2023, 34: s873. DOI: 10.1016/j.annonc.2023.09.1471.Peer-Reviewed Original ResearchPD-L1 expression as a unique negative predictive biomarker in advanced squamous NSCLC when treated with first-line chemotherapy.
Wong Zhun Hong N, Zhao J, Zhu K, Yap D, Kumarakulasinghe N, Huang Y, Sundar R. PD-L1 expression as a unique negative predictive biomarker in advanced squamous NSCLC when treated with first-line chemotherapy. Journal Of Clinical Oncology 2023, 41: e21140-e21140. DOI: 10.1200/jco.2023.41.16_suppl.e21140.Peer-Reviewed Original ResearchNon-small cell lung cancerPD-L1 expressionFirst-line chemotherapyNon-squamous non-small cell lung cancerSquamous non-small cell lung cancerTreated with first-line chemotherapyPhase III randomized trialNegative predictive biomarkerNon-squamous histologyPD-L1 subgroupsPD-L1Tumor progressionSquamous histologyPredictive biomarkersKaplan-MeierAdvanced squamous non-small cell lung cancerAdvanced non-small cell lung cancerPatients treated with first-line chemotherapyRandomized trialsInvestigated PD-L1 expressionRisk of tumor progressionHigh PD-L1Kaplan-Meier (KM) curvesPositive predictive biomarkerImmune checkpoint inhibition
2022
Pan-immune-inflammation value as a predictive biomarker for survival in advanced non-small cell lung cancer patients treated with immunotherapy.
Sooi K, Low J, Miow Q, Kumarakulasinghe N, Sundar R, Huang Y. Pan-immune-inflammation value as a predictive biomarker for survival in advanced non-small cell lung cancer patients treated with immunotherapy. Journal Of Clinical Oncology 2022, 40: e21095-e21095. DOI: 10.1200/jco.2022.40.16_suppl.e21095.Peer-Reviewed Original ResearchPan-immune-inflammation valueNon-small cell lung cancerProgression-free survivalAdvanced non-small cell lung cancerNon-small cell lung cancer patientsPD-L1Overall survivalPrognostic factorsPredictive biomarkersUnivariate analysisAdvanced non-small cell lung cancer patientsHigher PIVMedian progression-free survivalMultivariate analysisImmune checkpoint inhibitor therapyPredictor of survival outcomesCell lung cancer patientsPredictive valueImmune checkpoint inhibitorsPD-L1 statusAdvanced NSCLC patientsCheckpoint inhibitor therapyTreated with immunotherapyANCA-associated vasculitisECOG performance status
2021
“3G” Trial: An RNA Editing Signature to Guide Gastric Cancer ChemotherapyRNA Editing Signature in Gastric Cancer
An O, Song Y, Ke X, So J, Sundar R, Yang H, Rha S, Lee M, Tay S, Ong X, Tan A, Ng M, Tantoso E, Chen L, Tan P, Yong W, Consortium S. “3G” Trial: An RNA Editing Signature to Guide Gastric Cancer ChemotherapyRNA Editing Signature in Gastric Cancer. Cancer Research 2021, 81: 2788-2798. PMID: 33558338, DOI: 10.1158/0008-5472.can-20-2872.Peer-Reviewed Original ResearchConceptsAdvanced gastric cancerRNA editingRNA editing signaturesEditing levelsGastric cancerRNA editing eventsHigher editing levelsAdenosine-to-inosineRNA editing analysisGastric cancer cell linesPredictive biomarkersStratify patientsLevels of editingGene expression profilesPredicting response to chemotherapyEditing sitesEditing eventsMolecular subtypes of gastric cancerCancer cell linesPlatinum-based chemotherapyMetastatic gastric cancerSubtypes of gastric cancerCancer Genome AtlasFirst-line therapyResponse to chemotherapy
2020
Predictive Biomarkers of Immune Checkpoint Inhibition in Gastroesophageal Cancers
Sundar R, Smyth E, Peng S, Yeong J, Tan P. Predictive Biomarkers of Immune Checkpoint Inhibition in Gastroesophageal Cancers. Frontiers In Oncology 2020, 10: 763. PMID: 32500029, PMCID: PMC7243739, DOI: 10.3389/fonc.2020.00763.Peer-Reviewed Educational MaterialsImmune checkpoint inhibitionGastroesophageal cancerPredictive biomarkersCheckpoint inhibitionRandomized phase III studyImmune checkpoint inhibitor trialsValidation of predictive biomarkersCheckpoint inhibitor trialsPhase III studySubgroup of patientsIII studiesSurvival benefitInhibitor trialsPatient selectionGastroesophagealNovel biomarkersPrecision oncologyCancer treatmentCancerRegulatory approvalImmunotherapyNegative resultsBiomarkersPatientsInhibition
2017
Clinical outcomes of adolescents and young adults (AYA) with advanced solid tumors participating in phase I trials.
Sundar R, McVeigh T, Petruckevitch A, Diamantis N, Ang J, Chenard-Poirier M, Collins D, Lim J, Ameratunga M, Khan K, Kaye S, Banerji U, Lopez J, De Bono J, Van Der Graaf W. Clinical outcomes of adolescents and young adults (AYA) with advanced solid tumors participating in phase I trials. Journal Of Clinical Oncology 2017, 35: 10536-10536. DOI: 10.1200/jco.2017.35.15_suppl.10536.Peer-Reviewed Original ResearchPhase I trialAdvanced solid tumorsPhase I studyAYA patientsI trialFamily historySolid tumorsDrug Development UnitClinical outcomesOutcomes of AYA patientsMedian progression free survivalMolecular characterization of tumorsClinical benefit rateProgression free survivalSomatic genetic aberrationsRoyal Marsden HospitalHereditary cancer syndromesClinical outcomes of adolescentsCharacterization of tumorsMedian OSSystemic chemotherapyFree survivalGenetic aberrationsPredictive biomarkersBenefit rateAdvances in the Development of Molecularly Targeted Agents in Non-Small-Cell Lung Cancer
Dolly S, Collins D, Sundar R, Popat S, Yap T. Advances in the Development of Molecularly Targeted Agents in Non-Small-Cell Lung Cancer. Drugs 2017, 77: 813-827. PMID: 28378229, DOI: 10.1007/s40265-017-0732-2.Peer-Reviewed Educational MaterialsConceptsAnaplastic lymphoma kinaseEpidermal growth factor receptorDevelopment of molecular-targeted agentsAdvent of immune checkpoint inhibitorsNon-small-cell lung cancerPredictive biomarkers of responseEmergence of acquired resistanceTreatment approachesAdvanced NSCLC patientsImmune checkpoint inhibitorsProgression-free survivalMolecular targeted agentsBiomarkers of responseNon-small-cellTreatment of patientsCancer-related mortalityGrowth factor receptorMutation-specific inhibitorsAnti-tumor agentsCheckpoint inhibitorsNSCLC patientsGene aberrationsDownstream signaling blockadePredictive biomarkersMolecular subtypes
2016
Emerging biomarkers for PD-1 pathway cancer therapy
Lim J, Sundar R, Chnard-Poirier M, Lopez J, Yap T. Emerging biomarkers for PD-1 pathway cancer therapy. Biomarkers In Medicine 2016, 11: 53-67. PMID: 27936870, DOI: 10.2217/bmm-2016-0228.Peer-Reviewed Educational MaterialsConceptsPD-L1Predictive biomarkers of responseImmune checkpoint inhibitorsImmune-related toxicitiesPD-L1 expressionPD-L1 inhibitorsBiomarkers of responseTreatment response biomarkersMultiple tumor typesIntermediate end pointsCheckpoint inhibitorsPD-1Predictive biomarkersImmuno-oncologyResponse assessmentTumor typesResponse biomarkersCancer therapyEnd pointsTherapy designBiomarkersFDA registrationTreatmentInhibitorsDifferential respondingLow Levels of NDRG1 in Nerve Tissue Are Predictive of Severe Paclitaxel-Induced Neuropathy
Sundar R, Jeyasekharan A, Pang B, Soong R, Kumarakulasinghe N, Ow S, Ho J, Lim J, Tan D, Wilder-Smith E, Bandla A, Tan S, Asuncion B, Fazreen Z, Hoppe M, Putti T, Poh L, Goh B, Lee S. Low Levels of NDRG1 in Nerve Tissue Are Predictive of Severe Paclitaxel-Induced Neuropathy. PLOS ONE 2016, 11: e0164319. PMID: 27716814, PMCID: PMC5055363, DOI: 10.1371/journal.pone.0164319.Peer-Reviewed Original ResearchConceptsPaclitaxel-induced neuropathySevere neuropathyReceiver operating characteristicNerve tissueDose-limiting toxicityEarly breast cancerSensory peripheral neuropathyArea under the curveBreast cancer patientsIntensity of stainingWeekly paclitaxelSurgical resectionCharcot-Marie-ToothLimiting toxicitiesPredictive biomarkersNerve biopsyPeripheral neuropathyBreast cancerBiomarker strategiesCancer patientsNDRG1 expressionNeuropathyExpression scorePatientsPaclitaxel383P RAS/AKT pathway mutations as predictive biomarkers in patients with colorectal cancer treated with the exportin 1 (XPO1) inhibitor selinexor (SEL) – inhibition of nuclear-cytoplasmic translocation of p27 as a mechanism of anti-tumour activity
Heong V, Koe P, Yong W, Soo R, Chee C, Wong A, Thian Y, Sundar R, Ho J, Gopinathan A, Lee S, Goh B, Tan D. 383P RAS/AKT pathway mutations as predictive biomarkers in patients with colorectal cancer treated with the exportin 1 (XPO1) inhibitor selinexor (SEL) – inhibition of nuclear-cytoplasmic translocation of p27 as a mechanism of anti-tumour activity. Annals Of Oncology 2016, 27: vi122. DOI: 10.1093/annonc/mdw368.26.Peer-Reviewed Original Research
2014
Immunotherapy in the treatment of non-small cell lung cancer
Sundar R, Soong R, Cho B, Brahmer J, Soo R. Immunotherapy in the treatment of non-small cell lung cancer. Lung Cancer 2014, 85: 101-109. PMID: 24880938, PMCID: PMC4332778, DOI: 10.1016/j.lungcan.2014.05.005.Peer-Reviewed Educational MaterialsConceptsImmune response to tumorsTreatment of non-small cell lung cancerNon-small cell lung cancerProlonged clinical responsesImmune checkpoint modulatorsImmune checkpoint pathwaysPD-L1 inhibitorsResponse to tumorsCell lung cancerCTLA-4PD-1PD-L1Tolerable toxicityTumor immunosurveillanceCheckpoint modulatorsCo-stimulatoryCo-inhibitoryClinical responseImmunotherapeutic agentsPredictive biomarkersImmune destructionLung cancerTreatment selectionImmune systemInhibitory molecules