2023
Real-World Treatment Patterns Among Patients with Myelodysplastic Syndromes Initiating Oral Decitabine and Cedazuridine or Intravenous/Subcutaneous Hypomethylating Agents
Zeidan A, Costantino H, Modi K, Salimi T, Washington T, Epstein R. Real-World Treatment Patterns Among Patients with Myelodysplastic Syndromes Initiating Oral Decitabine and Cedazuridine or Intravenous/Subcutaneous Hypomethylating Agents. Blood 2023, 142: 548. DOI: 10.1182/blood-2023-188638.Peer-Reviewed Original ResearchHigh-risk myelodysplastic syndromeOral DECHMA therapyMedian ageTreatment patternsCCI scoreAML diagnosisMyelodysplastic syndromeSC cohortReal-world treatment patternsReal-world clinical practiceEnd of enrollmentMean CCI scorePre-index periodPrescription claims dataDiscontinuation of treatmentHalf of patientsDays of administrationStandard of careTreatment of MDSEnd of studyLongitudinal persistenceOral decitabineIndex dateTreatment cohorts
2019
Clinical Effectiveness of Hypomethylating Agents (HMAs) and Lenalidomide (Len) in Older Patients (pts) with Refractory Anemia with Ring Sideroblasts: A Large Population-Based Study in the United States (US)
Wang X, Wang R, Zhang C, Zeidan A, Podoltsev N, Huntington S, Gore S, Davidoff A, Ma X. Clinical Effectiveness of Hypomethylating Agents (HMAs) and Lenalidomide (Len) in Older Patients (pts) with Refractory Anemia with Ring Sideroblasts: A Large Population-Based Study in the United States (US). Blood 2019, 134: 4748. DOI: 10.1182/blood-2019-128821.Peer-Reviewed Original ResearchPopulation-based studyLR-MDSMedian overall survivalOverall survivalClinical effectivenessHypomethylating agentCelgene CorporationMedian durationRed blood cellsMedian timeRing sideroblastsBoehringer IngelheimAdvisory CommitteeLarge population-based studyDaiichi SankyoOlder adultsAbnormal erythroid precursorsTransfusion independence rateEnd Results-MedicareHigh-risk MDSErythropoiesis-stimulating agentsKaplan-Meier statisticsComparative clinical effectivenessEnd of studyPart D coverage
2018
Transfusion Independence in Lower-Risk, Non-del5(q) Myelodysplastic Syndromes (LR-MDS) Among Patients (pts) Initiating Hypomethylating Agents (HMAs) While Receiving Red Blood Cell (RBC) Transfusions
Zeidan A, Zhu W, Wang R, Stahl M, Huntington S, Giri S, Podoltsev N, Gore S, Ma X, Davidoff A. Transfusion Independence in Lower-Risk, Non-del5(q) Myelodysplastic Syndromes (LR-MDS) Among Patients (pts) Initiating Hypomethylating Agents (HMAs) While Receiving Red Blood Cell (RBC) Transfusions. Blood 2018, 132: 838. DOI: 10.1182/blood-2018-99-116497.Peer-Reviewed Original ResearchRBC transfusion independenceHMA initiationTransfusion independenceTransfusion dependenceLR-MDSClinical trial dataHypomethylating agentTransfusion statusMedian timeMedian TI durationCox modelContinuous Medicare Parts ATrial dataRed blood cell transfusionDiagnosis of MDSRBC transfusion dependenceSubset of ptsBlood cell transfusionEnd Results-MedicareErythropoiesis-stimulating agentsHigh-risk diseaseMultivariate Cox modelTreatment of MDSEnd of studyTI durationUse 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 organization
2016
Disease‐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 agentsLack of Association Between Costs of Care and Overall Survival (OS) Among Medicare Beneficiaries with Myelodysplastic Syndromes (MDS) in the United States (US)
Zeidan A, Wang R, Davidoff A, Gore S, Soulos P, Huntington S, Gross C, Ma X. Lack of Association Between Costs of Care and Overall Survival (OS) Among Medicare Beneficiaries with Myelodysplastic Syndromes (MDS) in the United States (US). Blood 2015, 126: 873. DOI: 10.1182/blood.v126.23.873.873.Peer-Reviewed Original ResearchDisability Status ScoreOverall survivalMyelodysplastic syndromeMDS patientsCost of careStudy cohortLack of associationHistologic subtypeStatus scoreMedicare beneficiariesEnd Results-Medicare databaseProportional hazards regression modelsOverall study cohortMedian overall survivalOutcomes of patientsElixhauser comorbidity scoreDate of diagnosisEntire study cohortKaplan-Meier methodHazards regression modelsDisease-related costsNon-white raceEnd of studyDate of deathMedicare Part AMyelodysplastic Syndromes and Acute Myeloid Leukemia in Prostate Cancer Patients after Radiotherapy, a Population-Based Study
Wang R, Zeidan A, Soulos P, Yu J, Davidoff A, Gore S, Gross C, Ma X. Myelodysplastic Syndromes and Acute Myeloid Leukemia in Prostate Cancer Patients after Radiotherapy, a Population-Based Study. Blood 2015, 126: 3295. DOI: 10.1182/blood.v126.23.3295.3295.Peer-Reviewed Original ResearchMDS/AMLProstate cancer patientsIntensity-modulated radiotherapyProstate cancer diagnosisImpact of radiotherapyCancer patientsMyelodysplastic syndromeProstate cancerMyeloid malignanciesSecond malignanciesHazard ratioCancer diagnosisRadiation modalitiesEnd Results-Medicare databaseElderly prostate cancer patientsRisk of MDSMultivariate modelRetrospective cohort studyRole of radiotherapyElixhauser comorbidity scoreAcute myeloid leukemia diagnosisHistory of anemiaAcute myeloid leukemiaEnd of studyExternal beam radiotherapyDeferasirox therapy is associated with reduced mortality risk in a medicare population with myelodysplastic syndromes
Zeidan AM, Hendrick F, Friedmann E, Baer MR, Gore SD, Sasane M, Paley C, Davidoff AJ. Deferasirox therapy is associated with reduced mortality risk in a medicare population with myelodysplastic syndromes. Journal Of Comparative Effectiveness Research 2015, 4: 327-340. PMID: 26274794, PMCID: PMC5549705, DOI: 10.2217/cer.15.20.Peer-Reviewed Original ResearchConceptsMyelodysplastic syndromeMortality riskDeferasirox therapyOlder MDS patientsICD-9 codesIron chelation therapyEnd of studyMarginal structural modelsTransfusion thresholdMDS patientsMedicare patientsChelation therapyMedicare claimsMedicare populationPatientsBlood unitsAbstractTextTherapySignificant reductionSyndromeRiskWeeksMortality
2012
Lenalidomide Performance in the Real World: Patterns of Utilization and Effectiveness in a Medicare Population with Myelodysplastic Syndromes
Zeidan A, Gore S, McNally D, Baer M, Hendrick F, Mahmoud D, Davidoff A. Lenalidomide Performance in the Real World: Patterns of Utilization and Effectiveness in a Medicare Population with Myelodysplastic Syndromes. Blood 2012, 120: 3837. DOI: 10.1182/blood.v120.21.3837.3837.Peer-Reviewed Original ResearchErythropoiesis-stimulating agentsTransfusion independenceTransfusion useMyelodysplastic syndromeRisk groupsTransfusion statusLens useObservational studyClaims dataLarge population-based observational studiesResponse rateIntermediate-risk myelodysplastic syndromesPopulation-based observational studyICD-9-CM codesCycles of therapyInitiation of lenalidomidePoor performance statusReceipt of transfusionClinical trial evidenceInitiation of treatmentAge 75 yearsTransfusion-dependent anemiaEnd of studyZIP Code-level measuresMedicare Part ADeferasirox Is Associated with Reduced Mortality Risk in a Medicare Population with Myelodysplastic Syndromes
Zeidan A, Hendrick F, Friedmann E, Gore S, Baer M, Sasane M, Paley C, McNally D, Davidoff A. Deferasirox Is Associated with Reduced Mortality Risk in a Medicare Population with Myelodysplastic Syndromes. Blood 2012, 120: 426. DOI: 10.1182/blood.v120.21.426.426.Peer-Reviewed Original ResearchIron chelation therapyErythropoiesis-stimulating agentsMarginal structural modelsRisk of deathMyelodysplastic syndromeRenal diseaseTransfusion thresholdThyroid diseaseIron overloadChelation therapyObservation periodHealth statusOral iron chelation therapyICD-9-CM diagnosisICD-9-CM codesOlder MDS patientsSolid tumor diagnosisDuration of therapyCo-morbid conditionsOnset of diabetesEnd of studyOverall survival analysisPatients' health statusReduced mortality riskDrug side effectsAssociation Between FDA Safety Warnings, CMS Coverage Restrictions and Adherence to Guidelines for ESA Use in Patients with Myelodysplastic Syndromes
Hendrick F, Davidoff A, Zeidan A, Gore S, Baer M. Association Between FDA Safety Warnings, CMS Coverage Restrictions and Adherence to Guidelines for ESA Use in Patients with Myelodysplastic Syndromes. Blood 2012, 120: 971. DOI: 10.1182/blood.v120.21.971.971.Peer-Reviewed Original ResearchErythropoiesis stimulating agentsCMS national coverage determinationsFDA safety warningsESA useNational Coverage DeterminationMyelodysplastic syndromeESA initiationSerum EPO levelsMDS patientsUse of ESAsEPO levelsChronic renal failureOff-label indicationsProportion of patientsChemotherapy-related anemiaSpecific clinical parametersOff-label useTreatment of anemiaEnd of studySerum erythropoietin levelsLikelihood of responseLogistic regression modelsThromboembolic eventsTransfusion useAdverse eventsUtilization 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