{
  "url": "https://dantelabs.com/traits/difficulty-descending-stairs",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "difficulty-descending-stairs",
    "id": "HP:0033235",
    "name": "Difficulty descending stairs",
    "definition": "Reduced ability to desscend stairs.",
    "synonyms": [
      "Difficulty walking down stairs"
    ],
    "systems": [
      {
        "slug": "abnormality-of-the-musculoskeletal-system",
        "name": "Abnormality of the musculoskeletal system",
        "url": "https://dantelabs.com/traits/abnormality-of-the-musculoskeletal-system"
      }
    ],
    "broader": [
      {
        "slug": "functional-motor-deficit",
        "name": "Functional motor deficit",
        "url": "https://dantelabs.com/traits/functional-motor-deficit"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "gaa",
        "symbol": "GAA",
        "hgnc": "HGNC:4065",
        "name": "alpha glucosidase",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gaa"
      }
    ]
  }
}