2023
Combining Gene Mutation with Transcriptomic Data Improves Outcome Prediction in Myelodysplastic Syndromes
Sauta E, Zampini M, Dall'Olio D, Sala C, Todisco G, Travaglino E, Lanino L, Tentori C, Maggioni G, D'Amico S, Asti G, Dall'Olio L, Mosca E, Ubezio M, Campagna A, Riva E, Bicchieri M, Savevski V, Santoro A, Kordasti S, Santini V, Diez-Campelo M, Kubasch A, Platzbecker U, Fenaux P, Zhao L, Zeidan A, Haferlach T, Castellani G, Della Porta M. Combining Gene Mutation with Transcriptomic Data Improves Outcome Prediction in Myelodysplastic Syndromes. Blood 2023, 142: 1863. DOI: 10.1182/blood-2023-186222.Peer-Reviewed Original ResearchAcute myeloid leukemiaProportional hazards modelOverall survivalClinical outcomesMyelodysplastic syndromeClinical featuresMDS patientsPrognostic informationConcordance indexCox proportional hazards modelConventional prognostic scoresIPSS-R scorePrimary end pointBone marrow blastsHarrell's concordance indexPeripheral blood cytopeniasPrognostic scoring systemRisk of progressionAdditional prognostic informationCytogenetic alterationsGene mutationsIndividual patient levelSame clinical phenotypeBlood cytopeniasMarrow blasts
2021
Characteristics and Clinical Outcome of Patients with Clonal Cytopenias of Undetermined Significance: A Large Retrospective Multi-Center International Study
Xie Z, Hyun M, Komrokji R, Zeidan A, Madanat Y, Zeidner J, Coombs C, Griffiths E, Lai C, Kishtagari A, Foran J, Badar T, Yi C, Desai P, Ades L, Osman A, Taylor J, Deeg H, Brunner A, Carraway H, Al Ali N, Bewersdorf J, Prebet T, Singh A, Tsai C, Chandhok N, Soong D, Patnaik M, Savona M, Al-Kali A. Characteristics and Clinical Outcome of Patients with Clonal Cytopenias of Undetermined Significance: A Large Retrospective Multi-Center International Study. Blood 2021, 138: 2158. DOI: 10.1182/blood-2021-146254.Peer-Reviewed Original ResearchClinical Trials CommitteeProgression-free survivalIndependent review committeeOverall survivalTrials CommitteeDisease progressionBristol-Myers SquibbMyeloid neoplasmsResponse rateFunctional pathway analysisSpeakers bureauUndetermined significanceMultivariable modelClonal cytopeniaReview CommitteeMedian progression-free survivalBoehringer IngelheimAdvisory CommitteeMulti-centre international studyCG abnormalitiesCox proportional hazards modelGene panelDaiichi SankyoBaseline clinical dataKaplan-Meier method
2019
Clinical Outcomes of Older Patients (pts) with Acute Myeloid Leukemia (AML) Receiving Hypomethylating Agents (HMAs): A Large Population-Based Study in the United States
Zeidan A, Wang R, Wang X, Shallis R, Podoltsev N, Bewersdorf J, Huntington S, Neparidze N, Giri S, Gore S, Davidoff A, Ma X. Clinical Outcomes of Older Patients (pts) with Acute Myeloid Leukemia (AML) Receiving Hypomethylating Agents (HMAs): A Large Population-Based Study in the United States. Blood 2019, 134: 646. DOI: 10.1182/blood-2019-127398.Peer-Reviewed Original ResearchRBC transfusion dependenceAcute myeloid leukemiaMedian overall survivalTransfusion independenceOverall survivalTransfusion dependenceHypomethylating agentCelgene CorporationHMA initiationIntensive chemotherapyOS probabilityMedian timeMultivariable analysisMultivariable Cox proportional hazards modelsBoehringer IngelheimAdvisory CommitteeCox proportional hazards modelDaiichi SankyoChemotherapy-related hospitalizationMo of diagnosisRBC transfusion independenceImproved overall survivalClinical trial evidenceInferior overall survivalWorse overall survivalAssociation of provider experience and clinical outcomes in patients with myelodysplastic syndromes receiving hypomethylating agents
Zeidan AM, Hu X, Zhu W, Stahl M, Wang R, Huntington SF, Giri S, Bewersdorf JP, Podoltsev NA, Gore SD, Ma X, Davidoff AJ. Association of provider experience and clinical outcomes in patients with myelodysplastic syndromes receiving hypomethylating agents. Leukemia & Lymphoma 2019, 61: 397-408. PMID: 31570040, PMCID: PMC7732188, DOI: 10.1080/10428194.2019.1663423.Peer-Reviewed Original ResearchConceptsMyelodysplastic syndromeOverall survivalHMA cyclesHMA therapyProvider experienceCox proportional hazards modelOlder MDS patientsMedian overall survivalPercent of patientsSEER-Medicare dataMultivariate logistic regressionProportional hazards modelHMA initiationClinical outcomesMDS patientsClinical trialsMedian numberHMA treatmentHazards modelPatientsSignificant associationLogistic regressionPopulation-level survivalSurvivalSyndrome
2018
Use of Statins, Survival and Incidence of Thrombosis Among Older Adults with Essential Thrombocythemia: A Population-Based Study
Podoltsev N, Zhu M, Wang R, Zeidan A, Wang X, Huntington S, Giri S, Davidoff A, Gore S, Ma X. Use of Statins, Survival and Incidence of Thrombosis Among Older Adults with Essential Thrombocythemia: A Population-Based Study. Blood 2018, 132: 4865. DOI: 10.1182/blood-2018-99-119118.Peer-Reviewed Original ResearchUse of statinsIncidence of thrombosisStatin usersLog-rank testRisk of thrombosisOverall survivalEssential thrombocythemiaET diagnosisPercentage of daysHydrophilic statinsOlder adultsET patientsMultivariate Cox proportional hazards modelLarge population-based cohort studyContinuous Medicare Parts APopulation-based cohort studyCox proportional hazards modelEnd Results-MedicareErythropoietin-independent erythroid colony formationBetter overall survivalKaplan-Meier curvesPopulation-based cohortEnd of studyProportional hazards modelPart DUse of Statins, Survival and Incidence of Thrombosis Among Older Adults with Polycythemia Vera: A Population-Based Study
Podoltsev N, Zhu M, Wang R, Zeidan A, Wang X, Davidoff A, Huntington S, Giri S, Gore S, Ma X. Use of Statins, Survival and Incidence of Thrombosis Among Older Adults with Polycythemia Vera: A Population-Based Study. Blood 2018, 132: 3580. DOI: 10.1182/blood-2018-99-119272.Peer-Reviewed Original ResearchStatin usersImpact of statinsLog-rank testRisk of thrombosisOverall survivalPercentage of daysPV patientsMyeloproliferative neoplasmsPV diagnosisMultivariate Cox proportional hazards modelContinuous Medicare Parts ACox proportional hazards modelCardiovascular risk factorsEnd Results-MedicareErythropoietin-independent erythroid colony formationBetter overall survivalKaplan-Meier curvesType of statinPopulation-based cohortNumber of phlebotomiesEnd of studyProportional hazards modelPart DMedicare Part AHealth maintenance organizationThe impact of phlebotomy and hydroxyurea on survival and risk of thrombosis among older patients with polycythemia vera
Podoltsev NA, Zhu M, Zeidan AM, Wang R, Wang X, Davidoff AJ, Huntington SF, Giri S, Gore SD, Ma X. The impact of phlebotomy and hydroxyurea on survival and risk of thrombosis among older patients with polycythemia vera. Blood Advances 2018, 2: 2681-2690. PMID: 30333100, PMCID: PMC6199652, DOI: 10.1182/bloodadvances.2018021436.Peer-Reviewed Original ResearchConceptsRisk of thrombosisPV patientsOverall survivalThrombotic eventsMultivariable Cox proportional hazards modelsEnd Results-Medicare databaseHigh-risk PV patientsCox proportional hazards modelOlder adultsImpact of phlebotomyRetrospective cohort studyPopulation-based studyProportional hazards modelEffect of phlebotomyOutcomes of interestPolycythemia vera patientsContemporary clinical practiceImproved OSCohort studyCytoreductive therapyOlder patientsTherapeutic phlebotomyTreatment modalitiesCurrent guidelinesLower riskThe use of immunosuppressive therapy in MDS: clinical outcomes and their predictors in a large international patient cohort
Stahl M, DeVeaux M, de Witte T, Neukirchen J, Sekeres MA, Brunner AM, Roboz GJ, Steensma DP, Bhatt VR, Platzbecker U, Cluzeau T, Prata PH, Itzykson R, Fenaux P, Fathi AT, Smith A, Germing U, Ritchie EK, Verma V, Nazha A, Maciejewski JP, Podoltsev NA, Prebet T, Santini V, Gore SD, Komrokji RS, Zeidan AM. The use of immunosuppressive therapy in MDS: clinical outcomes and their predictors in a large international patient cohort. Blood Advances 2018, 2: 1765-1772. PMID: 30037803, PMCID: PMC6058241, DOI: 10.1182/bloodadvances.2018019414.Peer-Reviewed Original ResearchConceptsAnti-thymocyte globulinRBC transfusion independenceImmunosuppressive therapyTransfusion independenceOverall response rateHypocellular bone marrowMyelodysplastic syndromeOverall survivalBone marrowRed blood cell transfusion independenceHorse anti-thymocyte globulinRabbit anti-thymocyte globulinInternational Working Group criteriaCox proportional hazards modelSingle-center natureMedian overall survivalKaplan-Meier methodLarge international cohortLarge international patient cohortProportional hazards modelInternational patient cohortPredictors of benefitParoxysmal nocturnal hemoglobinuriaLogistic regression modelsSteroid monotherapy
2017
Physician volume and discontinuation of rituximab during lymphoma treatment.
Huntington S, Long J, Hoag J, Wang R, Zeidan A, Giri S, Gore S, Ma X, Gross C, Davidoff A. Physician volume and discontinuation of rituximab during lymphoma treatment. Journal Of Clinical Oncology 2017, 35: 6593-6593. DOI: 10.1200/jco.2017.35.15_suppl.6593.Peer-Reviewed Original ResearchNon-Hodgkin lymphomaEarly discontinuationRituximab discontinuationPhysician volumeProvider volumeEnd Results-Medicare dataB-cell non-Hodgkin lymphomaCell non-Hodgkin lymphomaCox proportional hazards modelDiscontinuation of rituximabSevere infusion reactionsRetrospective cohort studyImpact of discontinuationDays of initiationProportional hazards modelDose-dependent mannerRituximab cyclesRituximab initiationInfusion reactionsOverall survivalCohort studyPrimary outcomeSystemic treatmentLymphoma treatmentRelative risk
2016
The Use of Hypomethylating Agents (HMAs) in Patients with Relapsed and Refractory Acute Myeloid Leukemia (RR-AML): Clinical Outcomes and Their Predictors in a Large International Patient Cohort
Stahl M, Podoltsev N, DeVeaux M, Perreault S, Itzykson R, Ritchie E, Sekeres M, Fathi A, Komrokji R, Bhatt V, Al-Kali A, Cluzeau T, Santini V, Brunner A, Roboz G, Fenaux P, Litzow M, Vey N, Verma V, Germing U, Fernández P, Zelterman D, Kim T, Prebet T, Gore S, Zeidan A. The Use of Hypomethylating Agents (HMAs) in Patients with Relapsed and Refractory Acute Myeloid Leukemia (RR-AML): Clinical Outcomes and Their Predictors in a Large International Patient Cohort. Blood 2016, 128: 1063. DOI: 10.1182/blood.v128.22.1063.1063.Peer-Reviewed Original ResearchMultivariable logistic regression modelRR-AMLMinority of patientsOverall survivalPrior linesHypomethylating agentHMA therapyMedian numberLogistic regression modelsChromosome 7 abnormalitiesStable diseaseBlast percentageHematologic improvementProgressive diseaseHazard ratioClinical outcomesSpeakers bureauMultivariable Cox proportional hazards modelsPeripheral blood blast percentageRefractory acute myeloid leukemiaAllogeneic stem cell transplantationInternational Working Group criteriaWhite blood cell countCox proportional hazards modelBM blast percentageComparative clinical effectiveness of azacitidine versus decitabine in older patients with myelodysplastic syndromes
Zeidan AM, Davidoff AJ, Long JB, Hu X, Wang R, Ma X, Gross CP, Abel GA, Huntington SF, Podoltsev NA, Hajime U, Prebet T, Gore SD. Comparative clinical effectiveness of azacitidine versus decitabine in older patients with myelodysplastic syndromes. British Journal Of Haematology 2016, 175: 829-840. PMID: 27650975, DOI: 10.1111/bjh.14305.Peer-Reviewed Original ResearchConceptsMyelodysplastic syndromeRAEB patientsMedian survivalClinical trialsMultivariate Cox proportional hazards modelCox proportional hazards modelKaplan-Meier methodPopulation-based survivalSignificant survival differenceComparative clinical effectivenessProportional hazards modelAgent azacitidineHMA initiationExcess blastsOlder patientsRandomized trialsHistological subtypesRefractory anemiaClinical effectivenessSurvival differencesSubset analysisSurvival advantageHazards modelPatientsDecitabineDisease‐related costs of care and survival among Medicare‐enrolled patients with myelodysplastic syndromes
Zeidan AM, Wang R, Davidoff AJ, Ma S, Zhao Y, Gore SD, Gross CP, Ma X. Disease‐related costs of care and survival among Medicare‐enrolled patients with myelodysplastic syndromes. Cancer 2016, 122: 1598-1607. PMID: 26970288, PMCID: PMC5509410, DOI: 10.1002/cncr.29945.Peer-Reviewed Original ResearchConceptsMyelodysplastic syndromeEligible patientsHazard ratioMedicare beneficiariesMultivariate Cox proportional hazards modelEnd Results-Medicare databasePropensity score-matched groupsCox proportional hazards modelOverall study populationSubgroup of patientsConfidence intervalsCost-saving interventionEnd of studyProportional hazards modelElderly patientsOverall survivalDisease characteristicsMDS cohortPatient outcomesStudy populationInternational ClassificationWarrants additional researchHazards modelPatientsSurvival rate
2015
Comparative Effectiveness of Azacitidine Versus Decitabine Among Older Adults Diagnosed with Higher-Risk Myelodysplastic Syndromes (HR-MDS)
Zeidan A, Long J, Hall J, Wang R, Huntington S, Abel G, Prebet T, Podoltsev N, Gross C, Gore S, Ma X, Davidoff A. Comparative Effectiveness of Azacitidine Versus Decitabine Among Older Adults Diagnosed with Higher-Risk Myelodysplastic Syndromes (HR-MDS). Blood 2015, 126: 3285. DOI: 10.1182/blood.v126.23.3285.3285.Peer-Reviewed Original ResearchHigh-risk myelodysplastic syndromeHR-MDS patientsKaplan-Meier survival curvesEnd of studyHMA initiationMedian OSClinical trialsComorbidity countHazard ratioHigh school educationClinical practiceMultivariate Cox proportional hazards modelSurvival curvesEnd Results-Medicare databaseMedian household incomeRandomized phase III trialReal-world clinical practiceCox proportional hazards modelOlder MDS patientsDisability Status ScoreRetrospective cohort studyOverall survival advantagePhase III trialsYear of diagnosisErythropoiesis-stimulating agentsVariations in erythropoiesis-stimulating agent administration in transfusion-dependent myelodysplastic syndromes impact response
Duong VH, Baer MR, Hendrick F, Weiss SR, Sato M, Zeidan AM, Gore SD, Davidoff AJ. Variations in erythropoiesis-stimulating agent administration in transfusion-dependent myelodysplastic syndromes impact response. Leukemia Research 2015, 39: 586-591. PMID: 25869077, PMCID: PMC4441842, DOI: 10.1016/j.leukres.2015.03.013.Peer-Reviewed Original ResearchConceptsErythropoiesis-stimulating agentsUse of darbepoetinTransfusion independenceESA initiationTransfusion dependenceMyelodysplastic syndromeESA useTransfusion-dependent MDS patientsRed blood cell transfusionNumber of weeksCox proportional hazards modelErythropoiesis-stimulating agent administrationEnd Results-MedicareWeeks of therapyBlood cell transfusionWeeks of treatmentPopulation-based studyKaplan-Meier statisticsProportional hazards modelAssociation of timingHigh response rateCell transfusionEarly administrationSurveillance EpidemiologyESA administration
2012
Utilization Patterns of Iron Chelation Therapy in Transfusion-Dependent Myelodysplastic Syndrome Patients Enrolled in Medicare Part D.
Zeidan A, Baer M, Gore S, Sasane M, Paley C, McNally D, Davidoff A. Utilization Patterns of Iron Chelation Therapy in Transfusion-Dependent Myelodysplastic Syndrome Patients Enrolled in Medicare Part D. Blood 2012, 120: 3178. DOI: 10.1182/blood.v120.21.3178.3178.Peer-Reviewed Original ResearchIron chelation therapyCongestive heart failureStudy cohortCardiac conduction disordersMedicare Part DTransfusion thresholdPerformance statusRed blood cellsMyelodysplastic syndromeRenal diseaseConduction disordersChelation therapyObservation periodHistory of CHFPart DCox proportional hazards modelICD-9-CM codesErythropoiesis-stimulating agentsCoronary artery diseaseEntire study cohortMyelodysplastic syndrome patientsEnd of studyProportional hazards modelUtilization patternsMedicare enrollment files