Featured Publications
Effectiveness of Immune Checkpoint Inhibitors in Patients With Advanced Esophageal Squamous Cell Carcinoma
Yap D, Leone A, Wong N, Zhao J, Tey J, Sundar R, Pietrantonio F. Effectiveness of Immune Checkpoint Inhibitors in Patients With Advanced Esophageal Squamous Cell Carcinoma. JAMA Oncology 2023, 9: 215-224. PMID: 36480211, PMCID: PMC9857522, DOI: 10.1001/jamaoncol.2022.5816.Peer-Reviewed Original ResearchConceptsAdvanced esophageal squamous cell carcinomaImmune checkpoint inhibitorsEsophageal squamous cell carcinomaSquamous cell carcinomaPD-L1 expressionKaplan-Meier curvesLow PD-L1 expressionFirst-line trialsProgression-free survivalDuration of responsePD-L1Overall survivalCell carcinomaRandomized clinical trialsPooled analysisClinical trialsCheckpoint inhibitorsTumor proportionEffect of immune checkpoint inhibitorsLow programmed death ligand 1Benefit of immune checkpoint inhibitorsHazard ratioSurvival dataFirst-line settingICI-based regimens
2024
Immune checkpoint inhibitors in advanced gastroesophageal adenocarcinoma: a series of patient-level meta-analyses in different programmed death-ligand 1 subgroups
Leone A, Mai A, Fong K, Yap D, Kato K, Smyth E, Moehler M, Seong J, Sundar R, Zhao J, Pietrantonio F. Immune checkpoint inhibitors in advanced gastroesophageal adenocarcinoma: a series of patient-level meta-analyses in different programmed death-ligand 1 subgroups. ESMO Open 2024, 9: 103962. PMID: 39426081, PMCID: PMC11533044, DOI: 10.1016/j.esmoop.2024.103962.Peer-Reviewed Original ResearchImmune checkpoint inhibitorsCombined positive scoreBenefit of immune checkpoint inhibitorsCheckpoint inhibitorsOS benefitOverall survivalAnti-programmed cell death protein 1Kaplan-Meier (KM) plotsEfficacy of immune checkpoint inhibitorsFirst-line immune checkpoint inhibitorsPD-L1 combined positive scoreProgrammed death ligand 1 subgroupsCell death protein 1Programmed death-ligand 1Patient-level meta-analysesPatient-level meta-analysisDeath-ligand 1Advanced gastroesophageal adenocarcinomaRandomized clinical trialsCheckMate-649KEYNOTE-062Gastroesophageal adenocarcinomaTherapeutic optionsClinical trialsKM plotsReal-World Study of Systemic Treatment after First-Line Atezolizumab plus Bevacizumab for Hepatocellular Carcinoma in Asia-Pacific Countries
Lee C, Yoo C, Hong J, Park J, Kim J, Tai D, Kim H, Korphaisarn K, Tanasanvimon S, Chen S, Kim J, Kim I, Kim M, Choo J, Oh S, Chen C, Bae W, Kim H, Huh S, Yen C, Park S, Lee D, Chan L, Kang B, Kang M, Sundar R, Choi H, Chan S, Chon H, Lee M. Real-World Study of Systemic Treatment after First-Line Atezolizumab plus Bevacizumab for Hepatocellular Carcinoma in Asia-Pacific Countries. Liver Cancer 2024, 1-15. DOI: 10.1159/000540969.Peer-Reviewed Original ResearchFirst-line atezolizumabProgression-free survivalImmune checkpoint inhibitorsTyrosine kinase inhibitorsSecond-line regimensOverall survivalHepatocellular carcinomaSecond-line progression-free survivalSecond-line tyrosine kinase inhibitorsPatients treated with tyrosine kinase inhibitorsAssociated with improved OSImmune checkpoint inhibitor combinationsImmune checkpoint inhibitor useMedian progression-free survivalLow tumor burdenAdvanced hepatocellular carcinomaFirst-line regimenReal-world studyCheckpoint inhibitorsTumor burdenSystemic treatmentAtezolizumabBevacizumabRetrospective studyLenvatinibCHAPTER-GIST-101: A phase I study of pimitespib combined with imatinib in patients with imatinib-refractory gastrointestinal stromal tumor.
Hirano H, Naito Y, Sundar R, Komatsu Y, Kurokawa Y, Li J, Ozaka M, Iwatsuki M, Chen J, Yen C, Zalcberg J, Roy A, Chen L, Nishida T, Doi T. CHAPTER-GIST-101: A phase I study of pimitespib combined with imatinib in patients with imatinib-refractory gastrointestinal stromal tumor. Journal Of Clinical Oncology 2024, 42: tps97-tps97. DOI: 10.1200/jco.2024.42.23_suppl.tps97.Peer-Reviewed Original ResearchDose-escalation partGastrointestinal stromal tumorsProgression-free survivalDays on/2 daysResistance to IMStromal tumorsImatinib-refractory gastrointestinal stromal tumorsInvestigator-assessed progression-free survivalAdvanced gastrointestinal stromal tumorsKinase-domain mutationsOvercome IM resistanceWeeks on/2 weeksDisease control rateDose-limiting toxicitySecond-line settingDuration of responseMaximum tolerated dosePhase I studyPhase 3 studyPhase 1 studySoft tissue sarcomasHsp90 inhibitorsInhibited tumor growthAnti-tumor activityOverall survivalMolecular profiling of metastatic breast cancer and target-based therapeutic matching in an Asian tertiary phase I oncology unit
Walsh R, Ong R, Cheo S, Low P, Jayagopal A, Lee M, Ngoi N, Ow S, Wong A, Lim S, Lim Y, Heong V, Sundar R, Soo R, Chee C, Yong W, Goh B, Lee S, Tan D, Lim J. Molecular profiling of metastatic breast cancer and target-based therapeutic matching in an Asian tertiary phase I oncology unit. Frontiers In Oncology 2024, 14: 1342346. PMID: 38812774, PMCID: PMC11133600, DOI: 10.3389/fonc.2024.1342346.Peer-Reviewed Original ResearchProlonged median progression-free survivalTumor mutational burdenObjective response rateMetastatic breast cancerHazard ratioNext-generation sequencingPhase I unitMedian OSMolecular profilingOverall survivalAssociated with prolonged median PFSBreast cancerMedian progression-free survivalTreatment outcomesTrials of targeted therapiesProgression-free survivalData cut-offBroad-panel next-generation sequencingTumor molecular profilingTreatment eventsFoundationOne CDxMBC patientsMutational burdenAssociated with improvementsTertiary centreEfficacy and Safety of Trifluridine/Tipiracil-Containing Combinations in Colorectal Cancer and Other Advanced Solid Tumors: A Systematic Review
Shitara K, Falcone A, Fakih M, George B, Sundar R, Ranjan S, Van Cutsem E. Efficacy and Safety of Trifluridine/Tipiracil-Containing Combinations in Colorectal Cancer and Other Advanced Solid Tumors: A Systematic Review. The Oncologist 2024, 29: e601-e615. PMID: 38366864, PMCID: PMC11067808, DOI: 10.1093/oncolo/oyae007.Peer-Reviewed Original ResearchConceptsMetastatic colorectal cancerRefractory metastatic colorectal cancerAdverse eventsDiscontinuation rate due to adverse eventsColorectal cancerChemorefractory metastatic colorectal cancerSafety outcomesMedian overall survivalSafety of FTD/TPIProgression-free survivalAdvanced solid tumorsAssociated with improved outcomesEarly-phase studiesSystematic reviewOverall survivalFTD/TPIRetrospective studySolid tumorsBevacizumabClinical efficacyTargeted agentsTumor typesAntineoplastic agentsAdvanced cancerImprove outcomesUnveiling the prognostic significance of malignant ascites in advanced gastrointestinal cancers: a marker of peritoneal carcinomatosis burden
Provenzano L, Gwee Y, Conca V, Lonardi S, Bozzarelli S, Tamburini E, Passardi A, Zaniboni A, Tosi F, Aprile G, Nasca V, Boccaccino A, Ambrosini M, Vetere G, Carullo M, Guaglio M, Battaglia L, Zhao J, Chia D, Yong W, Tan P, So J, Kim G, Shabbir A, Ong C, Casella F, Cremolini C, Bencivenga M, Sundar R, Pietrantonio F. Unveiling the prognostic significance of malignant ascites in advanced gastrointestinal cancers: a marker of peritoneal carcinomatosis burden. Therapeutic Advances In Medical Oncology 2024, 16: 17588359241289517. PMID: 39502404, PMCID: PMC11536604, DOI: 10.1177/17588359241289517.Peer-Reviewed Original ResearchMetastatic colorectal cancerMetastatic gastric cancerMetastatic gastric cancer patientsPeritoneal metastasisMalignant ascitesAdvanced gastrointestinal cancerSurvival outcomesMedian peritoneal cancer index scoreGastrointestinal cancerPeritoneal cancer index scoreGastric cancerMetastatic colorectal cancer patientsSubgroup of patientsMedian OSProgression-freeOverall survivalSystemic therapyPrognostic significancePatient survivalAscites groupPoor outcomeRetrospective analysisColorectal cancerRandomized trialsAscites
2023
Frailty and long-term survival among patients in Australian intensive care units with metastatic cancer (FRAIL-CANCER study): a retrospective registry-based cohort study
Alamgeer M, Ling R, Ueno R, Sundararajan K, Sundar R, Pilcher D, Subramaniam A. Frailty and long-term survival among patients in Australian intensive care units with metastatic cancer (FRAIL-CANCER study): a retrospective registry-based cohort study. The Lancet Healthy Longevity 2023, 4: e675-e684. PMID: 38042160, DOI: 10.1016/s2666-7568(23)00209-x.Peer-Reviewed Original ResearchConceptsIntensive care unitRegistry-based cohort studyLong-term survivalAustralian intensive care unitsRetrospective registry-based cohort studyMetastatic cancerAssociated with shorter survival timeEffect of frailtyClinical Frailty ScaleShorter survival timeSurvival timeCohort studyAssociated with poor long-term survivalCare unitPoor long-term survivalIntensive care unit admissionTime-limited trialsCandidacy of patientsCox proportional hazards regression modelsRobust sandwich variance estimatorProportion of patientsProportional hazards regression modelsHazards regression modelsImpact of frailtyOverall survival1565P ERCC1 gene polymorphism influences overall survival in early oesophageal cancer: Results from the phase III MRC OEO2 randomised controlled trial
Keogh G, Ann D, Cunningham D, Langley R, Allum W, Nankivell M, Tan P, Sundar R, Grabsch H. 1565P ERCC1 gene polymorphism influences overall survival in early oesophageal cancer: Results from the phase III MRC OEO2 randomised controlled trial. Annals Of Oncology 2023, 34: s875. DOI: 10.1016/j.annonc.2023.09.1477.Peer-Reviewed Original ResearchIndirect Treatment Comparison of First-Line CDK4/6-Inhibitors in Post-Menopausal Patients with HR+/HER2− Metastatic Breast Cancer
Zhao J, Fong K, Chan Y, Tey J, Dawood S, Lee S, Finn R, Sundar R, Lim J. Indirect Treatment Comparison of First-Line CDK4/6-Inhibitors in Post-Menopausal Patients with HR+/HER2− Metastatic Breast Cancer. Cancers 2023, 15: 4558. PMID: 37760527, PMCID: PMC10527344, DOI: 10.3390/cancers15184558.Peer-Reviewed Original ResearchProgression-free survivalPost-menopausal patientsIndirect treatment comparisonCDK4/6 inhibitorsHR+/HER2- MBCOS differenceOverall survivalSurvival outcomesEndpoint of progression-free survivalFirst-line aromatase inhibitorsProgression-free survival differenceHR+/HER2- metastatic breast cancerPhase III randomized trialComparison of survival outcomesMetastatic breast cancerKaplan-Meier OSTreatment of patientsCox proportional-hazards modelProportional-hazards modelTreatment comparisonsIndirect pairwise comparisonsMONALEESA-2OS benefitAromatase inhibitorsBreast cancerIndirect treatment comparison of first-line CDK4/6-inhibitors in post-menopausal patients with HR+/HER2- metastatic breast cancer.
Zhao J, Fong K, Chan Y, Tey J, Dawood S, Lee S, Finn R, Sundar R, Lim J. Indirect treatment comparison of first-line CDK4/6-inhibitors in post-menopausal patients with HR+/HER2- metastatic breast cancer. Journal Of Clinical Oncology 2023, 41: 1071-1071. DOI: 10.1200/jco.2023.41.16_suppl.1071.Peer-Reviewed Original ResearchProgression-free survivalPost-menopausal patientsIndirect treatment comparisonCDK4/6 inhibitorsPALOMA-2MONARCH 3OS differenceOverall survivalAromatase inhibitorsPatient-level time-to-event dataEndpoint of progression-free survivalFirst-line aromatase inhibitorsProgression-free survival differenceHR+/HER2- metastatic breast cancerHormone receptor positive (HR+)/human epidermal growth factor receptor 2Epidermal growth factor receptor 2Progression-free survival curvesPhase III randomized controlled trialsCDK4/6 inhibitor palbociclibMetastatic breast cancerPhase III studyKaplan-Meier OSCox proportional hazards modelsProportional hazards modelTreatment comparisonsEffects of prior therapies on outcomes with trifluridine/tipiracil in patients with metastatic gastric/gastroesophageal junction cancer in a randomized phase III trial (TAGS)
Shitara K, George B, Taieb J, Sundar R, Fakih M, Makris L, Benhadji K, Ghidini M. Effects of prior therapies on outcomes with trifluridine/tipiracil in patients with metastatic gastric/gastroesophageal junction cancer in a randomized phase III trial (TAGS). Journal Of Cancer Research And Clinical Oncology 2023, 149: 9361-9374. PMID: 37213030, PMCID: PMC10374776, DOI: 10.1007/s00432-023-04813-z.Peer-Reviewed Original ResearchConceptsProgression-free survivalGastric/gastroesophageal junction cancerJunction cancerSurvival benefitSafety profileEastern Cooperative Oncology Group performance statusRandomized phase III trialAssociated with survival benefitMedian overall survivalPhase III trialsPost hoc exploratory analysisLater-lineTrifluridine/tipiracil treatmentHematologic toxicityPrior therapyMedian overallOverall survivalIII trialsPlacebo armPerformance statusResultsBaseline characteristicsMedian timeRamucirumabTherapy patternsClinical trialsClinical relevance of PD-1 positive CD8 T-cells in gastric cancer
Choo J, Kua L, Soe M, Asuncion B, Tan B, Teo C, Tay R, So J, Shabbir A, Guowei K, Tan H, Chan G, Ma H, Ramachandran G, Lum J, Chee C, Sridharan S, Tan P, Sundar R, Yong W. Clinical relevance of PD-1 positive CD8 T-cells in gastric cancer. Gastric Cancer 2023, 26: 393-404. PMID: 36781556, PMCID: PMC10115710, DOI: 10.1007/s10120-023-01364-7.Peer-Reviewed Original ResearchConceptsCD8 T cellsPD-1+CD8+ T cellsT cellsTumor microenvironmentPD-1Overall survivalGastric cancerMultiplex immunohistochemistryT cell-inflamed tumor microenvironmentAssociated with improved OSIncreased PD-1 expressionClinical relevanceGranzyme-B expressionInflamed tumor microenvironmentPD-1 expressionInfluence overall survivalNK cell proportionTreated with immunotherapyPhase 2 trialAssociated with chemotherapyCox proportional hazards modelsProportional hazards modelImproved OSImmunotherapy sensitivityNK cellsMalignant ascites as a marker of peritoneal carcinomatosis burden in patients with colorectal and gastroesophageal cancer.
Gwee Y, Chia D, Provenzano L, Lonardi S, Conca V, Cremolini C, Yong W, Tan P, So J, Kim G, Shabbir A, Ong J, Pietrantonio F, Sundar R. Malignant ascites as a marker of peritoneal carcinomatosis burden in patients with colorectal and gastroesophageal cancer. Journal Of Clinical Oncology 2023, 41: 455-455. DOI: 10.1200/jco.2023.41.4_suppl.455.Peer-Reviewed Original ResearchPeritoneal cancer indexPresence of malignant ascitesPeritoneal metastasisMalignant ascitesColorectal cancer patientsGastric cancerColorectal cancerOverall survivalGastrointestinal malignanciesPoor survivalCohort of gastric cancerMedian peritoneal cancer indexPeritoneal cancer index scoreFirst-line systemic treatmentResistant to systemic therapyMetastatic gastrointestinal malignanciesMedian overall survivalStage IV diseaseMetastatic CRC patientsAbsence of ascitesClinico-pathological dataPoor survival outcomesTertiary oncology centerStudy of patientsRandomized clinical trials
2022
Outcomes of a Phase II Study of Intraperitoneal Paclitaxel plus Systemic Capecitabine and Oxaliplatin (XELOX) for Gastric Cancer with Peritoneal Metastases
Chia D, Sundar R, Kim G, Ang J, Lum J, Nga M, Goh G, Seet J, Chee C, Tan H, Ho J, Ngoi N, Lee M, Muthu V, Chan G, Pang A, Ang Y, Choo J, Lim J, Teh J, Lwin A, Soon Y, Shabbir A, So J, Yong W. Outcomes of a Phase II Study of Intraperitoneal Paclitaxel plus Systemic Capecitabine and Oxaliplatin (XELOX) for Gastric Cancer with Peritoneal Metastases. Annals Of Surgical Oncology 2022, 29: 8597-8605. PMID: 36070113, DOI: 10.1245/s10434-022-11998-z.Peer-Reviewed Original ResearchConceptsGastric cancer peritoneal metastasisIP-PTXConversion surgeryIntraperitoneal paclitaxelMedian OSSystemic chemotherapyPeritoneal metastasisSC groupConversion to negative cytologyResultsThe median OSProgression-free survivalPhase II studyMethodsForty-four patientsIntravenous oxaliplatinMedian PFSOral capecitabineSystemic capecitabineExtraperitoneal metastasesNegative cytologyPeritoneal diseaseOverall survivalPerformance statusPrimary endpointSecondary endpointsIP cohortFirst-Line Systemic Therapies for Advanced Hepatocellular Carcinoma: A Systematic Review and Patient-Level Network Meta-Analysis
Fong K, Zhao J, Sultana R, Lee J, Lee S, Chan S, Yau T, Tai D, Sundar R, Too C. First-Line Systemic Therapies for Advanced Hepatocellular Carcinoma: A Systematic Review and Patient-Level Network Meta-Analysis. Liver Cancer 2022, 12: 7-18. PMID: 36872922, PMCID: PMC9982345, DOI: 10.1159/000526639.Peer-Reviewed Original ResearchAdvanced hepatocellular carcinomaProgression-free survivalFirst-line systemic therapyBarcelona Clinic Liver CancerNetwork meta-analysisOverall survivalStandard of careAlpha-fetoproteinHazard ratioOS benefitSystemic therapyFirst-lineHepatocellular carcinomaFirst-line combination therapyRandom-effects network meta-analysisCombination of atezolizumabInhibitor monoclonal antibodiesFirst-line therapyCochrane Controlled Register of TrialsMeta-analysisKaplan-Meier curvesIndividual patient-level dataCochrane Controlled RegisterRegister of TrialsExtrahepatic spreadSelective Internal Radiation Therapy with Yttrium-90 Resin Microspheres Followed by Gemcitabine plus Cisplatin for Unresectable Intrahepatic Cholangiocarcinoma: A Phase 2 Single-Arm Multicenter Clinical Trial
Chan S, Chotipanich C, Choo S, Kwang S, Mo F, Worakitsitisatorn A, Tai D, Sundar R, Ng D, Loke K, Li L, Ng K, Peng Y, Yu S. Selective Internal Radiation Therapy with Yttrium-90 Resin Microspheres Followed by Gemcitabine plus Cisplatin for Unresectable Intrahepatic Cholangiocarcinoma: A Phase 2 Single-Arm Multicenter Clinical Trial. Liver Cancer 2022, 11: 451-459. PMID: 36158588, PMCID: PMC9485918, DOI: 10.1159/000525489.Peer-Reviewed Original ResearchUnresectable intrahepatic cholangiocarcinomaProgression-free survivalSelective internal radiation therapyInternal radiation therapyIntrahepatic cholangiocarcinomaMedian OSRadiation therapyOverall survivalClinical trialsMedian cycle of chemotherapyMedian progression-free survivalResin yttrium-90 microspheresYttrium-90 resin microspheresTreatment-related adverse eventsIntent-to-treat populationResponse rateDisease control rateResponse Evaluation CriteriaYttrium-90 microspheresCycles of chemotherapyWithdrawal of consentMulticenter clinical trialInvestigator-initiated clinical trialStandard gemcitabineStandard chemotherapyPan-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 statusUNOS Down-Staging Criteria for Liver Transplantation of Hepatocellular Carcinoma: Systematic Review and Meta-Analysis of 25 Studies
Tan D, Lim W, Yong J, Ng C, Muthiah M, Tan E, Xiao J, Lim S, Pin Tang A, Pan X, Kabir T, Bonney G, Sundar R, Syn N, Kim B, Dan Y, Noureddin M, Loomba R, Huang D. UNOS Down-Staging Criteria for Liver Transplantation of Hepatocellular Carcinoma: Systematic Review and Meta-Analysis of 25 Studies. Clinical Gastroenterology And Hepatology 2022, 21: 1475-1484. PMID: 35181565, DOI: 10.1016/j.cgh.2022.02.018.Peer-Reviewed Original ResearchConceptsUNOS-DS criteriaHepatocellular carcinoma recurrenceUNOS-DSDown-stagingOverall survivalLiver transplantationHepatocellular carcinomaMilan criteriaPost-LTLiver transplantation of hepatocellular carcinomaTransplantation of hepatocellular carcinomaAbstractText Label="RESULTS">WeAdult HCC patientsBaseline tumor burdenPost-LT outcomesDown-staging treatmentTumor burdenHCC patientsEmbase databasesPooled analysisPatientsIndividual participant dataRecurrenceClinical validationMeta-analysisCiprofloxacin plus gemcitabine-based chemotherapy in patients with metastatic pancreatic ductal adenocarcinoma: A pilot study of microbiome manipulation.
Cheo S, Lee J, Walsh R, Sundar R, Choo J, Chan G, Yong W, Meah W, Khor C, Chee C. Ciprofloxacin plus gemcitabine-based chemotherapy in patients with metastatic pancreatic ductal adenocarcinoma: A pilot study of microbiome manipulation. Journal Of Clinical Oncology 2022, 40: 570-570. DOI: 10.1200/jco.2022.40.4_suppl.570.Peer-Reviewed Original ResearchMetastatic pancreatic ductal adenocarcinomaGemcitabine-based chemotherapyProgression free survivalPancreatic ductal adenocarcinomaResistance to chemotherapyProgressive diseaseOverall survivalDuctal adenocarcinomaTreated with nab-paclitaxelMedian progression free survivalPancreatic ductal adenocarcinoma tumor microenvironmentGrade 1/2 rashSafety of ciprofloxacinResistance to gemcitabinePost-treatment stool samplesMicrobiome changesNab-paclitaxelOral ciprofloxacinFebrile neutropeniaFree survivalMedian agePrimary endpointSecondary endpointsTumor microenvironmentGut microbiome changes