Myeloproliferative DisordersMyelodysplastic SyndromesPrimary MyelofibrosisThrombocytosisSplenomegalyPolycythemia VeraReceptor, Fibroblast Growth Factor, Type 1Janus Kinase 2Bone MarrowThrombocythemia, EssentialLeukemia, Myelomonocytic, ChronicAnemia, RefractoryAnemia, Refractory, with Excess of BlastsSyndromeReceptors, ThrombopoietinMyelodysplastic-Myeloproliferative DiseasesLeukemia, Myeloid, AcuteLeukemia, Myeloid, Chronic, Atypical, BCR-ABL NegativeLeukemia, MyeloidLeukemia, Myelogenous, Chronic, BCR-ABL PositiveLeukemia, Myelomonocytic, JuvenileChromosomes, Human, Pair 5Hematopoiesis, ExtramedullaryHematopoietic Stem CellsLeukemia, Neutrophilic, ChronicDown SyndromeMutationMegakaryocytesAnemia, SideroblasticGranulocytesLeukemia, Megakaryoblastic, AcuteKaryotypingBone Marrow CellsFusion Proteins, bcr-ablTranslocation, GeneticLeukemiaChromosome AberrationsBlast CrisisHematopoiesisChromosomes, Human, Pair 8Bone Marrow NeoplasmsChromosomes, Human, Pair 20ThrombopoietinPolycythemiaOncogene Proteins, FusionPreleukemiaHypereosinophilic SyndromeLeukocytosisMonosomyHepatomegalyMutation, MissenseMyelopoiesisBudd-Chiari SyndromeAzacitidineBlood Cell CountColony-Forming Units AssayGenes, ablHematologic DiseasesMyeloid Progenitor CellsDNA Mutational AnalysisPlatelet CountPrognosisHematologic NeoplasmsAntigens, CD34Erythroid Precursor CellsChromosomes, Human, Pair 7Bone Marrow DiseasesBone Marrow TransplantationHydroxyureaCell Transformation, NeoplasticTreatment OutcomeCore Binding Factor Alpha 2 SubunitErythropoietinBenzamidesMyeloid CellsIn Situ Hybridization, FluorescenceHematopoietic Stem Cell TransplantationX Chromosome InactivationPoint MutationThalidomidePhiladelphia Chromosome