2024
Risk Prediction for Clonal Cytopenia: Multicenter Real-World Evidence
Xie Z, Komrokji R, Al Ali N, Smith A, Geyer S, Patel A, Saygin C, Zeidan A, Bewersdorf J, Mendez L, Kishtagari A, Zeidner J, Coombs C, Madanat Y, Chung S, Badar T, Foran J, Desai P, Tsai C, Griffiths E, Al Malki M, Amanam I, Lai C, Deeg H, Ades L, Yi C, Osman A, Dinner S, Abaza Y, Taylor J, Chandhok N, Soong D, Brunner A, Carraway H, Singh A, Elena C, Ferrari J, Gallì A, Pozzi S, Padron E, Patnaik M, Malcovati L, Savona M, Al-Kali A. Risk Prediction for Clonal Cytopenia: Multicenter Real-World Evidence. Blood 2024 PMID: 38996210, DOI: 10.1182/blood.2024024756.Peer-Reviewed Original ResearchMyeloid neoplasmsIncidence of MNClonal cytopeniaCumulative incidencePlatelet count <High-risk mutationsCox proportional hazards modelsVariant allele fractionProportional hazards modelClinical trial designCCUS patientsStratify patientsGray's testC-indexDisease entityRisk groupsCytopeniasAllele fractionSomatic mutationsRisk factorsHigh riskNatural historyRisk scoreHazards modelPatients
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
2020
Management of hyperleukocytosis and impact of leukapheresis among patients with acute myeloid leukemia (AML) on short- and long-term clinical outcomes: a large, retrospective, multicenter, international study
Stahl M, Shallis RM, Wei W, Montesinos P, Lengline E, Neukirchen J, Bhatt VR, Sekeres MA, Fathi AT, Konig H, Luger S, Khan I, Roboz GJ, Cluzeau T, Martínez-Cuadron D, Raffoux E, Germing U, Umakanthan JM, Mukherjee S, Brunner AM, Miller A, McMahon CM, Ritchie EK, Rodríguez-Veiga R, Itzykson R, Boluda B, Rabian F, Tormo M, Acuña-Cruz E, Rabinovich E, Yoo B, Cano I, Podoltsev NA, Bewersdorf JP, Gore S, Zeidan AM. Management of hyperleukocytosis and impact of leukapheresis among patients with acute myeloid leukemia (AML) on short- and long-term clinical outcomes: a large, retrospective, multicenter, international study. Leukemia 2020, 34: 3149-3160. PMID: 32132655, PMCID: PMC8155811, DOI: 10.1038/s41375-020-0783-3.Peer-Reviewed Original ResearchConceptsAcute myeloid leukemiaOverall survivalMyeloid leukemiaMultivariate analysisLong-term clinical outcomesComposite complete remissionImpact of leukapheresisManagement of hyperleukocytosisMedian overall survivalThirty-day mortalityHigh-quality evidenceWhite cell countProportional hazards modelUse of leukapheresisLogistic regression modelsSignificant resource useIntensive chemotherapyComplete remissionHazard ratioClinical outcomesInferior outcomesUnadjusted analysesQuality evidencePotential complicationsOdds ratio
2019
Association 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
Hypomethylating agent therapy use and survival in older patients with chronic myelomonocytic leukemia in the United States: A large population‐based study
Zeidan AM, Hu X, Long JB, Wang R, Ma X, Podoltsev NA, Huntington SF, Gore SD, Davidoff AJ. Hypomethylating agent therapy use and survival in older patients with chronic myelomonocytic leukemia in the United States: A large population‐based study. Cancer 2017, 123: 3754-3762. PMID: 28621841, PMCID: PMC6540984, DOI: 10.1002/cncr.30814.Peer-Reviewed Original ResearchConceptsChronic myelomonocytic leukemiaRisk of deathSupportive careEnd Results-Medicare databaseOlder adultsMedian OS timeOverall survival benefitCohort of patientsProportional hazards modelUse of HMAsMedian OSAgent therapySurvival benefitOS timeCMML patientsMyelomonocytic leukemiaHazards modelHMA treatmentPatientsTemporal improvementSecondary analysisPropensity scoreLimited evidenceSurvival changesApprovalPhysician 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
Comparative 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
Variations 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
2013
Effect of availability of oral iron chelation therapy (ICT) on initiation, duration, and dose adequacy in patients with myelodysplastic syndromes (MDS) and transfusional iron overload (TIO).
Gore S, Davidoff A, Hendrick F, Duong V, Stuart B, Baer M, Shenolikar R, Zeidan A. Effect of availability of oral iron chelation therapy (ICT) on initiation, duration, and dose adequacy in patients with myelodysplastic syndromes (MDS) and transfusional iron overload (TIO). Journal Of Clinical Oncology 2013, 31: e17584-e17584. DOI: 10.1200/jco.2013.31.15_suppl.e17584.Peer-Reviewed Original ResearchOral iron chelation therapyIron chelation therapyTransfusional iron overloadMyelodysplastic syndromeDose adequacySupportive care drugsProportional hazards modelMedicare Part ATherapeutic equipoiseCohort entryHazard ratioMost patientsRBC transfusionMDS patientsOral chemotherapyAdequate doseCare drugsIron overloadLogistics of administrationChelation therapyOral formulationHazards modelMedicare beneficiariesParenteral administrationTreatment duration
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