{
  "url": "https://dantelabs.com/traits/calvarial-hyperostosis",
  "trait": {
    "bundleId": "2026.10.19-9814e911",
    "release": "2026-09-01",
    "slug": "calvarial-hyperostosis",
    "id": "HP:0004490",
    "name": "Overgrowth of skullcap",
    "label": "Calvarial hyperostosis",
    "definition": "Excessive growth of the calvaria.",
    "synonyms": [
      "Hyperostosis of calvarial bones",
      "Increased ossification of calvarial bones"
    ],
    "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": "cranial-hyperostosis",
        "name": "Enlargement of skull bones",
        "url": "https://dantelabs.com/traits/cranial-hyperostosis"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "idua",
        "symbol": "IDUA",
        "hgnc": "HGNC:5391",
        "name": "alpha-L-iduronidase",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/idua"
      },
      {
        "slug": "slc39a14",
        "symbol": "SLC39A14",
        "hgnc": "HGNC:20858",
        "name": "solute carrier family 39 member 14",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/slc39a14"
      },
      {
        "slug": "akt1",
        "symbol": "AKT1",
        "hgnc": "HGNC:391",
        "name": "AKT serine/threonine kinase 1",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/akt1"
      },
      {
        "slug": "cox4i2",
        "symbol": "COX4I2",
        "hgnc": "HGNC:16232",
        "name": "cytochrome c oxidase subunit 4I2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cox4i2"
      },
      {
        "slug": "col1a1",
        "symbol": "COL1A1",
        "hgnc": "HGNC:2197",
        "name": "collagen type I alpha 1 chain",
        "frequency": "occasional",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/col1a1"
      },
      {
        "slug": "hnrnpa1",
        "symbol": "HNRNPA1",
        "hgnc": "HGNC:5031",
        "name": "heterogeneous nuclear ribonucleoprotein A1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/hnrnpa1"
      },
      {
        "slug": "hnrnpa2b1",
        "symbol": "HNRNPA2B1",
        "hgnc": "HGNC:5033",
        "name": "heterogeneous nuclear ribonucleoprotein A2/B1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/hnrnpa2b1"
      },
      {
        "slug": "vcp",
        "symbol": "VCP",
        "hgnc": "HGNC:12666",
        "name": "valosin containing protein",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/vcp"
      },
      {
        "slug": "prkar1a",
        "symbol": "PRKAR1A",
        "hgnc": "HGNC:9388",
        "name": "protein kinase cAMP-dependent type I regulatory subunit alpha",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/prkar1a"
      }
    ]
  }
}