{
  "url": "https://dantelabs.com/traits/fixed-facial-expression",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "fixed-facial-expression",
    "id": "HP:0005329",
    "name": "Fixed facial expression",
    "synonyms": [
      "Unchanging facial expression"
    ],
    "systems": [
      {
        "slug": "abnormality-of-head-or-neck",
        "name": "Abnormality of head or neck",
        "url": "https://dantelabs.com/traits/abnormality-of-head-or-neck"
      }
    ],
    "broader": [
      {
        "slug": "decreased-facial-expression",
        "name": "Decreased facial expression",
        "url": "https://dantelabs.com/traits/decreased-facial-expression"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "mapt",
        "symbol": "MAPT",
        "hgnc": "HGNC:6893",
        "name": "microtubule associated protein tau",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mapt"
      },
      {
        "slug": "piezo2",
        "symbol": "PIEZO2",
        "hgnc": "HGNC:26270",
        "name": "piezo type mechanosensitive ion channel component 2",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/piezo2"
      }
    ]
  }
}