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The Human Phenotype Ontology (HPO) is downloaded weekly from The file downloaded is considered the "last stable build" available for the ontology. For more about the HPO, view their website at

Term:Abnormality of blood and blood-forming tissues
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Accession:HP:0001871 term browser browse the term
Definition:An abnormality of the hematopoietic system.
Comment:The hematopoietic system comprises the organs that are involved in the production of blood, primarily the bone marrow, spleen, tonsils, and lymph nodes.
Synonyms:exact_synonym: Abnormality of the hematopoietic system;   Haematological abnormality;   Hematological abnormality
 related_synonym: Abnormality of the haematopoietic system;   Hematologic disease
 alt_id: HP:0003135
 xref: EFO:0005803;   MESH:D006402;   SNOMEDCT_US:191124002;   SNOMEDCT_US:34093004;   UMLS:C0018939;   UMLS:C0850715;   UMLS:C4020864

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Term Annotations click to browse term
  Human phenotype 0
    Phenotypic abnormality 0
      Abnormality of blood and blood-forming tissues 0
        Abnormal bleeding + 0
        Abnormal bone marrow cell morphology + 0
        Abnormal erythrocyte morphology + 0
        Abnormal erythrocyte physiology + 0
        Abnormal leukocyte morphology + 0
        Abnormal leukocyte physiology + 0
        Abnormal myeloid cell morphology + 0
        Abnormal thrombosis + 0
        Abnormality of coagulation + 0
        Abnormality of thrombocytes + 0
        Extramedullary hematopoiesis 0
        Hematological neoplasm + 0
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