{
  "url": "https://dantelabs.com/traits/abnormal-mastoid-morphology",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "abnormal-mastoid-morphology",
    "id": "HP:0000264",
    "name": "Abnormal mastoid morphology",
    "definition": "An abnormality of the mastoid process, which is the conical prominence projecting from the undersurface of the mastoid portion of the temporal bone.",
    "synonyms": [
      "Abnormality of mastoid process of temporal bone",
      "Abnormality of the mastoid"
    ],
    "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-skull-morphology",
        "name": "Abnormality of the skull",
        "url": "https://dantelabs.com/traits/abnormal-skull-morphology"
      }
    ],
    "narrower": [
      {
        "slug": "mastoiditis",
        "name": "Mastoiditis",
        "genes": 10,
        "url": "https://dantelabs.com/traits/mastoiditis"
      },
      {
        "slug": "delayed-pneumatization-of-the-mastoid-process",
        "name": "Delayed pneumatization of the mastoid process",
        "genes": 2,
        "url": "https://dantelabs.com/traits/delayed-pneumatization-of-the-mastoid-process"
      },
      {
        "slug": "advanced-pneumatization-of-the-mastoid-process",
        "name": "Advanced pneumatization of the mastoid process",
        "genes": 1,
        "url": "https://dantelabs.com/traits/advanced-pneumatization-of-the-mastoid-process"
      }
    ],
    "genes": [
      {
        "slug": "dlx3",
        "symbol": "DLX3",
        "hgnc": "HGNC:2916",
        "name": "distal-less homeobox 3",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/dlx3"
      }
    ]
  }
}