Myeloproliferative DisordersJanus Kinase 2Myelodysplastic SyndromesPolycythemia VeraPrimary MyelofibrosisThrombocythemia, EssentialMyelodysplastic-Myeloproliferative DiseasesThrombocytosisReceptors, ThrombopoietinLeukemia, Myeloid, Chronic, Atypical, BCR-ABL NegativeBone Marrow NeoplasmsLeukemia, Myelomonocytic, ChronicAnemia, RefractoryBone MarrowMutationLeukemia, MyeloidLeukemia, Myelomonocytic, JuvenileLeukemia, Myeloid, AcuteLeukemia, Myelogenous, Chronic, BCR-ABL PositiveAnemia, Refractory, with Excess of BlastsMegakaryocytesChronic DiseaseHematopoietic Stem CellsProto-Oncogene Proteins c-cblFusion Proteins, bcr-ablSplenomegalyAnemia, SideroblasticSyndromeClinical Trials as TopicHematologic NeoplasmsPhiladelphia ChromosomeJanus KinasesHematologyBlast CrisisMegakaryocyte Progenitor CellsSTAT5 Transcription FactorChromosomes, Human, Pair 5Myeloid Progenitor CellsBone Marrow DiseasesDNA Mutational AnalysisLeukemiaClonal EvolutionPrognosisReceptor, Platelet-Derived Growth Factor betaTreatment OutcomeMegakaryocyte-Erythroid Progenitor CellsBenzamidesMutation, MissensePolymerase Chain ReactionProtein Kinase InhibitorsCell Transformation, NeoplasticAmino Acid SubstitutionMyelopoiesisDisease ProgressionGene Knock-In TechniquesKaryotypingNeoplasmsChromosome AberrationsAzacitidinePoint MutationMonosomyPreleukemiaBone Marrow CellsCell ProliferationProto-Oncogene ProteinsAntineoplastic AgentsExonsChromosomes, Human, Pair 7Thalidomide