{
  "url": "https://dantelabs.com/traits/absent-tragus",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "absent-tragus",
    "id": "HP:0011268",
    "name": "Absent tragus",
    "definition": "Lack of convexity or prominence of the contour of the ridge between the bottom of the incisura and the confluence of the ascending helix and crus helix.",
    "synonyms": [],
    "systems": [
      {
        "slug": "abnormality-of-the-ear",
        "name": "Abnormality of the ear",
        "url": "https://dantelabs.com/traits/abnormality-of-the-ear"
      }
    ],
    "broader": [
      {
        "slug": "aplasia-hypoplasia-of-the-tragus",
        "name": "Absent/small tragus",
        "url": "https://dantelabs.com/traits/aplasia-hypoplasia-of-the-tragus"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "eftud2",
        "symbol": "EFTUD2",
        "hgnc": "HGNC:30858",
        "name": "elongation factor Tu GTP binding domain containing 2",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/eftud2"
      },
      {
        "slug": "smchd1",
        "symbol": "SMCHD1",
        "hgnc": "HGNC:29090",
        "name": "structural maintenance of chromosomes flexible hinge domain containing 1",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/smchd1"
      }
    ]
  }
}