{
  "url": "https://dantelabs.com/traits/abnormal-venous-morphology",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "abnormal-venous-morphology",
    "id": "HP:0002624",
    "name": "Abnormal vein",
    "label": "Abnormal venous morphology",
    "definition": "An anomaly of vein.",
    "synonyms": [
      "Venous abnormality"
    ],
    "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-blood-vessel-morphology",
        "name": "Abnormal blood vessel morphology",
        "url": "https://dantelabs.com/traits/abnormal-blood-vessel-morphology"
      }
    ],
    "narrower": [
      {
        "slug": "prominent-superficial-veins",
        "name": "Prominent veins",
        "genes": 20,
        "url": "https://dantelabs.com/traits/prominent-superficial-veins"
      },
      {
        "slug": "venous-insufficiency",
        "name": "Poorly functioning veins",
        "genes": 11,
        "url": "https://dantelabs.com/traits/venous-insufficiency"
      },
      {
        "slug": "venous-malformation",
        "name": "Venous malformation",
        "genes": 10,
        "url": "https://dantelabs.com/traits/venous-malformation"
      },
      {
        "slug": "abnormal-vena-cava-morphology",
        "name": "Abnormal vena cava morphology",
        "genes": 2,
        "url": "https://dantelabs.com/traits/abnormal-vena-cava-morphology"
      },
      {
        "slug": "arteriovenous-fistulas-of-celiac-and-mesenteric-vessels",
        "name": "Arteriovenous fistulas of celiac and mesenteric vessels",
        "genes": 1,
        "url": "https://dantelabs.com/traits/arteriovenous-fistulas-of-celiac-and-mesenteric-vessels"
      }
    ],
    "genes": [
      {
        "slug": "flt4",
        "symbol": "FLT4",
        "hgnc": "HGNC:3767",
        "name": "fms related receptor tyrosine kinase 4",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/flt4"
      },
      {
        "slug": "pik3ca",
        "symbol": "PIK3CA",
        "hgnc": "HGNC:8975",
        "name": "phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pik3ca"
      },
      {
        "slug": "plod1",
        "symbol": "PLOD1",
        "hgnc": "HGNC:9081",
        "name": "procollagen-lysine,2-oxoglutarate 5-dioxygenase 1",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/plod1"
      }
    ]
  }
}