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  "annotation" : {
    "ALT_DEFINITION" : [ "A chronic condition that involves primarily the megakaryocytic lineage. It is characterized by sustained thrombocytosis in the blood, increased numbers of large, mature megakaryocytes in the bone marrow, and elevated risk for thrombosis and/or hemorrhage.", "An increased number of thrombocytes (platelets) in the blood, without a known cause." ],
    "Contributing_Source" : [ "CPTAC", "CTEP", "CTRP", "Cellosaurus", "GDC", "NICHD", "mCode" ],
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    "ICD-O-3_Code" : [ "9962/3" ],
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    "Neoplastic_Status" : [ "Malignant" ],
    "Preferred_Name" : [ "Essential Thrombocythemia" ],
    "Semantic_Type" : [ "Neoplastic Process" ],
    "UMLS_CUI" : [ "C0040028" ],
    "code" : [ "C3407" ]
  },
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