{
  "url": "https://dantelabs.com/traits/abnormal-vena-cava-morphology",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "abnormal-vena-cava-morphology",
    "id": "HP:0005345",
    "name": "Abnormal vena cava morphology",
    "definition": "An abnormality of the structure of the veins that return deoxygenated blood from the body into the heart, i.e., the superior vena cava and the inferior vena cava.",
    "synonyms": [],
    "systems": [
      {
        "slug": "abnormality-of-the-cardiovascular-system",
        "name": "Abnormality of the cardiovascular system",
        "url": "https://dantelabs.com/traits/abnormality-of-the-cardiovascular-system"
      }
    ],
    "broader": [
      {
        "slug": "abnormal-morphology-of-the-great-vessels",
        "name": "Abnormal morphology of the great vessels",
        "url": "https://dantelabs.com/traits/abnormal-morphology-of-the-great-vessels"
      },
      {
        "slug": "abnormal-venous-morphology",
        "name": "Abnormal vein",
        "url": "https://dantelabs.com/traits/abnormal-venous-morphology"
      }
    ],
    "narrower": [
      {
        "slug": "abnormal-inferior-vena-cava-morphology",
        "name": "Abnormal inferior vena cava morphology",
        "genes": 53,
        "url": "https://dantelabs.com/traits/abnormal-inferior-vena-cava-morphology"
      },
      {
        "slug": "abnormal-superior-vena-cava-morphology",
        "name": "Abnormal superior vena cava morphology",
        "genes": 1,
        "url": "https://dantelabs.com/traits/abnormal-superior-vena-cava-morphology"
      }
    ],
    "genes": [
      {
        "slug": "cwc27",
        "symbol": "CWC27",
        "hgnc": "HGNC:10664",
        "name": "CWC27 spliceosome associated cyclophilin",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cwc27"
      },
      {
        "slug": "ube2a",
        "symbol": "UBE2A",
        "hgnc": "HGNC:12472",
        "name": "ubiquitin conjugating enzyme E2 A",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ube2a"
      }
    ]
  }
}