Thrombocythemia, EssentialMyeloproliferative DisordersPolycythemia VeraThrombocytosisJanus Kinase 2Primary MyelofibrosisMyelodysplastic SyndromesReceptors, ThrombopoietinPlatelet CountMegakaryocytesHydroxyureaThrombopoietinAnemia, RefractoryThrombosisLeukemia, Myeloid, Chronic, Atypical, BCR-ABL NegativeSplenomegalyCarbazilquinoneLeukemia, Myelomonocytic, ChronicBone MarrowGranulocytesPipobromanMutationLeukocytosisLeukemia, Myelogenous, Chronic, BCR-ABL PositiveMutation, MissensePolycythemiaLeukemia, MyeloidAnemia, Refractory, with Excess of BlastsHematopoietic Stem CellsBlood PlateletsLeukemia, Myeloid, AcuteHematopoiesis, ExtramedullaryAmino Acid SubstitutionThrombopoiesisLeukemia, Neutrophilic, ChronicLeukemia, Myelomonocytic, JuvenileMyelodysplastic-Myeloproliferative DiseasesHematopoiesisErythrocyte InclusionsPoint MutationErythroid Precursor CellsDNA Mutational AnalysisChromosomes, Human, Pair 5CoagulantsThrombophiliaLeukemia, Megakaryoblastic, AcuteGPI-Linked ProteinsReceptors, CytokineWorld Health OrganizationProto-Oncogene ProteinsPrognosisBone Marrow CellsThrombocytopeniaHemorrhageDown SyndromeFusion Proteins, bcr-ablTranslocation, GeneticReceptor, Fibroblast Growth Factor, Type 1Retrospective StudiesClone CellsPlatelet Aggregation InhibitorsChromosomes, Human, Pair 8Protein-Tyrosine KinasesHemangioma, CavernousFollow-Up StudiesKaryotypingBlast CrisisDisease ProgressionLeukocyte CountPhenotypeHepatomegalyChromosomes, Human, Pair 20LeukemiaHomozygoteHypereosinophilic SyndromeIsoantigensPolymerase Chain ReactionAnemia, SideroblasticTreatment OutcomeChromosome AberrationsOncogene Proteins, FusionAlleles