{
  "url": "https://dantelabs.com/traits/underdeveloped-antitragus",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "underdeveloped-antitragus",
    "id": "HP:0011251",
    "name": "Underdeveloped antitragus",
    "definition": "Reduction in the anterosuperior prominence of the area between the bottom of the incisura and the inner margin of the antihelix.",
    "synonyms": [
      "Hypoplastic antitragus",
      "Hypotrophic antitragus",
      "Small antitragus"
    ],
    "systems": [
      {
        "slug": "abnormality-of-the-ear",
        "name": "Abnormality of the ear",
        "url": "https://dantelabs.com/traits/abnormality-of-the-ear"
      }
    ],
    "broader": [
      {
        "slug": "abnormal-antitragus-morphology",
        "name": "Abnormal antitragus morphology",
        "url": "https://dantelabs.com/traits/abnormal-antitragus-morphology"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "kctd1",
        "symbol": "KCTD1",
        "hgnc": "HGNC:18249",
        "name": "potassium channel tetramerization domain containing 1",
        "frequency": "very-frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/kctd1"
      }
    ]
  }
}