{
  "url": "https://dantelabs.com/traits/abnormal-subungual-morphology",
  "trait": {
    "bundleId": "2026.10.19-9814e911",
    "release": "2026-09-01",
    "slug": "abnormal-subungual-morphology",
    "id": "HP:0009723",
    "name": "Abnormal subungual morphology",
    "definition": "A lesion located beneath a fingernail or toenail.",
    "synonyms": [
      "Abnormality of the subungual region"
    ],
    "systems": [
      {
        "slug": "abnormality-of-the-integument",
        "name": "Abnormality of the integument",
        "url": "https://dantelabs.com/traits/abnormality-of-the-integument"
      }
    ],
    "broader": [
      {
        "slug": "abnormal-nail-morphology",
        "name": "Abnormality of the nail",
        "url": "https://dantelabs.com/traits/abnormal-nail-morphology"
      }
    ],
    "narrower": [
      {
        "slug": "subungual-hyperkeratosis",
        "name": "Thickened, discolored skin under nail",
        "genes": 8,
        "url": "https://dantelabs.com/traits/subungual-hyperkeratosis"
      },
      {
        "slug": "subungual-fibromas",
        "name": "Subungual fibromas",
        "genes": 3,
        "url": "https://dantelabs.com/traits/subungual-fibromas"
      },
      {
        "slug": "subungual-hyperkeratotic-fragments",
        "name": "Subungual hyperkeratotic fragments",
        "genes": 1,
        "url": "https://dantelabs.com/traits/subungual-hyperkeratotic-fragments"
      }
    ],
    "genes": [
      {
        "slug": "col7a1",
        "symbol": "COL7A1",
        "hgnc": "HGNC:2214",
        "name": "collagen type VII alpha 1 chain",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/col7a1"
      }
    ]
  }
}