Myelodysplastic SyndromesMyeloproliferative DisordersJanus Kinase 2Anemia, RefractoryMyelodysplastic-Myeloproliferative DiseasesPrimary MyelofibrosisAnemia, Refractory, with Excess of BlastsPolycythemia VeraLeukemia, Myelomonocytic, ChronicThrombocythemia, EssentialSyndromeLeukemia, Myeloid, AcuteReceptors, ThrombopoietinBone Marrow NeoplasmsLeukemia, MyeloidBone MarrowChromosomes, Human, Pair 5Anemia, SideroblasticThrombocytosisAzacitidineLeukemia, Myeloid, Chronic, Atypical, BCR-ABL NegativeMutationChromosome AberrationsKaryotypingPrognosisMonosomyLeukemia, Myelomonocytic, JuvenilePreleukemiaThalidomideLeukemiaTreatment OutcomeHematopoietic Stem CellsChromosomes, Human, Pair 7Bone Marrow DiseasesHematologic NeoplasmsPancytopeniaAnemia, AplasticBone Marrow CellsAcute DiseaseCytogenetic AnalysisBlast CrisisProto-Oncogene Proteins c-cblLeukemia, Myelogenous, Chronic, BCR-ABL PositiveChromosome DeletionSplenomegalyNeoplasms, Second PrimaryHematologyDisease ProgressionDNA Mutational AnalysisGranulocyte Precursor CellsMyeloid Progenitor CellsHematopoietic Stem Cell TransplantationRetrospective StudiesCytogeneticsMegakaryocytesTrisomyAntimetabolites, AntineoplasticDown SyndromeIron OverloadPhiladelphia ChromosomeCell Transformation, NeoplasticSurvival AnalysisErythrocyte TransfusionAntigens, CD34Megakaryocyte-Erythroid Progenitor CellsHematopoiesisAntineoplastic AgentsHematologic AgentsErythropoietinMetabolic Syndrome XTransplantation, HomologousBone Marrow ExaminationChromosomes, Human, Pair 8Blood Cell CountSurvival RateChelation TherapyTranslocation, GeneticJanus KinasesRisk FactorsCytarabineIn Situ Hybridization, FluorescenceThrombocytopeniaBlood TransfusionCohort StudiesHematologic DiseasesMutation, MissenseRemission InductionCore Binding Factor Alpha 2 SubunitChromosomes, Human, Pair 20Case-Control StudiesMegakaryocyte Progenitor CellsSTAT5 Transcription FactorErythroid Precursor CellsTransplantation ConditioningPoint MutationGranulocyte Colony-Stimulating FactorPhenotypeBone Marrow TransplantationSensitivity and SpecificityVidarabine