{
  "url": "https://dantelabs.com/traits/abnormal-maxilla-morphology",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "abnormal-maxilla-morphology",
    "id": "HP:0000326",
    "name": "Abnormality of the upper jaw bone",
    "label": "Abnormal maxilla morphology",
    "definition": "An abnormality of the Maxilla (upper jaw bone).",
    "synonyms": [
      "Abnormality of the upper jaw bones",
      "Deformity of the maxilla",
      "Deformity of the upper jaw bones",
      "Malformation of the upper jaw bones",
      "Abnormality of the maxilla"
    ],
    "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-jaw-morphology",
        "name": "Abnormal jaw morphology",
        "url": "https://dantelabs.com/traits/abnormal-jaw-morphology"
      }
    ],
    "narrower": [
      {
        "slug": "hypoplasia-of-the-maxilla",
        "name": "Decreased size of maxilla",
        "genes": 130,
        "url": "https://dantelabs.com/traits/hypoplasia-of-the-maxilla"
      },
      {
        "slug": "hyperplasia-of-the-maxilla",
        "name": "Big maxilla",
        "genes": 12,
        "url": "https://dantelabs.com/traits/hyperplasia-of-the-maxilla"
      },
      {
        "slug": "narrow-maxilla",
        "name": "Decreased breadth of upper jaw bones",
        "genes": 2,
        "url": "https://dantelabs.com/traits/narrow-maxilla"
      },
      {
        "slug": "aplasia-of-the-maxilla",
        "name": "Absence of upper jaw bones",
        "genes": 1,
        "url": "https://dantelabs.com/traits/aplasia-of-the-maxilla"
      },
      {
        "slug": "abnormality-of-the-premaxilla",
        "name": "Abnormality of the intermaxillary bone",
        "genes": 0,
        "url": "https://dantelabs.com/traits/abnormality-of-the-premaxilla"
      }
    ],
    "genes": [
      {
        "slug": "fgf3",
        "symbol": "FGF3",
        "hgnc": "HGNC:3681",
        "name": "fibroblast growth factor 3",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fgf3"
      }
    ]
  }
}