Myelodysplastic SyndromesAnemia, RefractoryAnemia, Refractory, with Excess of BlastsSyndromeLeukemia, Myelomonocytic, ChronicLeukemia, Myeloid, AcuteChromosomes, Human, Pair 5Leukemia, MyeloidAzacitidineAnemia, SideroblasticBone MarrowChromosome AberrationsKaryotypingMonosomyThalidomidePreleukemiaMyeloproliferative DisordersMyelodysplastic-Myeloproliferative DiseasesPancytopeniaAnemia, AplasticChromosomes, Human, Pair 7Cytogenetic AnalysisPrognosisBone Marrow CellsLeukemiaAcute DiseaseChromosome DeletionGranulocyte Precursor CellsTreatment OutcomeNeoplasms, Second PrimaryBone Marrow DiseasesHematopoietic Stem Cell TransplantationIron OverloadTrisomyAntimetabolites, AntineoplasticCytogeneticsErythrocyte TransfusionHematologic AgentsTransplantation, HomologousHematopoietic Stem CellsChelation TherapySurvival AnalysisAntigens, CD34ErythropoietinBlood TransfusionDown SyndromeCytarabineMetabolic Syndrome XRemission InductionBlast CrisisTransplantation ConditioningBone Marrow ExaminationThrombocytopeniaMutationHematopoiesisBlood Cell CountSurvival RateVidarabineIn Situ Hybridization, FluorescenceSweet SyndromeDisease ProgressionAnemia, MacrocyticGranulocyte Colony-Stimulating FactorHematologic DiseasesChromosomes, Human, Pair 8Antineoplastic AgentsCore Binding Factor Alpha 2 SubunitResearch PersonnelAnemiaRetrospective StudiesChromosome DisordersHaploinsufficiencyKaryotypeErythroid Precursor CellsTranslocation, GeneticChromosomes, Human, Pair 20Hematologic NeoplasmsPrimary MyelofibrosisIron Chelating AgentsRisk FactorsHematinicsFlow CytometryLeukemia, Myelomonocytic, AcuteErythroid CellsBone Marrow TransplantationErythroblastsDNA Modification MethylasesHemoglobinuria, ParoxysmalImmunophenotypingAntilymphocyte SerumBusulfanFatal OutcomeIsochromosomesRecurrenceHLA-DR Serological SubtypesDNA Mutational AnalysisMyeloid Progenitor CellsErythropoiesisRibonucleoprotein, U2 Small NuclearAntineoplastic Combined Chemotherapy Protocols