Myeloproliferative DisordersPolycythemia VeraPrimary MyelofibrosisJanus Kinase 2Thrombocythemia, EssentialThrombocytosisMutation, MissensePoint MutationMutationReceptors, ThrombopoietinLeukemia, Myelomonocytic, ChronicLeukemia, Myeloid, Chronic, Atypical, BCR-ABL NegativeSplenomegalyHematopoiesis, ExtramedullaryLeukemia, Neutrophilic, ChronicLeukemia, Myelogenous, Chronic, BCR-ABL PositiveLeukemia, Myelomonocytic, JuvenileBone MarrowMyelodysplastic SyndromesHematopoietic Stem CellsLeukemia, Megakaryoblastic, AcuteGranulocytesFusion Proteins, bcr-ablDown SyndromeMegakaryocytesReceptor, Fibroblast Growth Factor, Type 1Leukemia, MyeloidPolycythemiaMyelodysplastic-Myeloproliferative DiseasesHepatomegalyTranslocation, GeneticHypereosinophilic SyndromeDNA Mutational AnalysisLeukocytosisAmino Acid SubstitutionFrameshift MutationLeukemia, Myeloid, AcuteChromosomes, Human, Pair 8Genes, ablBudd-Chiari SyndromeThrombopoietinHematopoiesisOncogene Proteins, FusionHydroxyureaChromosomes, Human, Pair 20X Chromosome InactivationBlast CrisisPolymerase Chain ReactionGerm-Line MutationBipolar DisorderBase SequenceBenzamidesExonsMyelopoiesisColony-Forming Units AssayPedigreeChromosomes, Human, Pair 5Anemia, Refractory, with Excess of BlastsBone Marrow CellsMolecular Sequence DataAllelesPlatelet CountChronic DiseasePhenotypeBone Marrow NeoplasmsGATA1 Transcription FactorPyrimidinesChromosomes, Human, XPiperazinesProto-Oncogene ProteinsMental DisordersPhiladelphia ChromosomeLeukemiaHydrops FetalisGenetic TestingBlood Cell CountJanus KinasesHematologic DiseasesMyeloid CellsValineAnxiety DisordersProtein-Tyrosine KinasesMyeloid Progenitor CellsMood DisordersSignal TransductionCell Transformation, NeoplasticKaryotypingChromosomes, Human, Pair 13Gene Expression Regulation, LeukemicAmino Acid SequenceErythroid Precursor CellsDNA-Binding ProteinsDisease Models, AnimalHeterozygoteHematologic NeoplasmsReceptors, Fibroblast Growth FactorClone CellsNeurofibromin 1Chromosomes, Human, Pair 9In Situ Hybridization, Fluorescence