{
  "url": "https://dantelabs.com/traits/extra-concha-fold",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "extra-concha-fold",
    "id": "HP:0400002",
    "name": "Extra concha fold",
    "definition": "Folds or ridges within the concha that are distinct from the crus helix.",
    "synonyms": [
      "Concha, Extra Fold"
    ],
    "systems": [
      {
        "slug": "abnormality-of-the-ear",
        "name": "Abnormality of the ear",
        "url": "https://dantelabs.com/traits/abnormality-of-the-ear"
      }
    ],
    "broader": [
      {
        "slug": "abnormal-pinna-morphology",
        "name": "Abnormally shaped ears",
        "url": "https://dantelabs.com/traits/abnormal-pinna-morphology"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "twist2",
        "symbol": "TWIST2",
        "hgnc": "HGNC:20670",
        "name": "twist family bHLH transcription factor 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/twist2"
      }
    ]
  }
}