{
  "url": "https://dantelabs.com/traits/thin-calvarium",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "thin-calvarium",
    "id": "HP:0010539",
    "name": "Thin cranial bone",
    "label": "Thin calvarium",
    "definition": "The presence of an abnormally thin calvarium.",
    "synonyms": [
      "Thin skull bone"
    ],
    "systems": [
      {
        "slug": "abnormality-of-head-or-neck",
        "name": "Abnormality of head or neck",
        "url": "https://dantelabs.com/traits/abnormality-of-head-or-neck"
      },
      {
        "slug": "abnormality-of-the-musculoskeletal-system",
        "name": "Abnormality of the musculoskeletal system",
        "url": "https://dantelabs.com/traits/abnormality-of-the-musculoskeletal-system"
      }
    ],
    "broader": [
      {
        "slug": "abnormal-calvaria-morphology",
        "name": "Abnormality of cranium",
        "url": "https://dantelabs.com/traits/abnormal-calvaria-morphology"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "sfrp4",
        "symbol": "SFRP4",
        "hgnc": "HGNC:10778",
        "name": "secreted frizzled related protein 4",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sfrp4"
      },
      {
        "slug": "pdgfrb",
        "symbol": "PDGFRB",
        "hgnc": "HGNC:8804",
        "name": "platelet derived growth factor receptor beta",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pdgfrb"
      }
    ]
  }
}