{
  "url": "https://dantelabs.com/traits/increased-factor-ix-activity",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "increased-factor-ix-activity",
    "id": "HP:0033061",
    "name": "Increased factor IX activity",
    "definition": "Elevated activity of coagulation factor IX. Factor IX, which itself is activated by factor Xa or factor VIIa to form factor IXa, activates factor X into factor Xa.",
    "synonyms": [],
    "systems": [
      {
        "slug": "abnormality-of-blood-and-blood-forming-tissues",
        "name": "Abnormality of blood and blood-forming tissues",
        "url": "https://dantelabs.com/traits/abnormality-of-blood-and-blood-forming-tissues"
      }
    ],
    "broader": [
      {
        "slug": "abnormal-factor-ix-activity",
        "name": "Abnormal factor IX activity",
        "url": "https://dantelabs.com/traits/abnormal-factor-ix-activity"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "f9",
        "symbol": "F9",
        "hgnc": "HGNC:3551",
        "name": "coagulation factor IX",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/f9"
      }
    ]
  }
}