{
  "url": "https://dantelabs.com/traits/reduced-arm-span",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "reduced-arm-span",
    "id": "HP:0012770",
    "name": "Reduced arm span",
    "definition": "Decreased length of the arm span (length from one end of an individual's arms measured at the fingertips to the other when raised parallel to the ground at shoulder height at a one-hundred eighty degree angle).",
    "synonyms": [],
    "systems": [
      {
        "slug": "abnormality-of-limbs",
        "name": "Abnormality of limbs",
        "url": "https://dantelabs.com/traits/abnormality-of-limbs"
      }
    ],
    "broader": [
      {
        "slug": "abnormal-arm-span",
        "name": "Abnormal arm span",
        "url": "https://dantelabs.com/traits/abnormal-arm-span"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "col9a1",
        "symbol": "COL9A1",
        "hgnc": "HGNC:2217",
        "name": "collagen type IX alpha 1 chain",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/col9a1"
      },
      {
        "slug": "col9a2",
        "symbol": "COL9A2",
        "hgnc": "HGNC:2218",
        "name": "collagen type IX alpha 2 chain",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/col9a2"
      },
      {
        "slug": "col9a3",
        "symbol": "COL9A3",
        "hgnc": "HGNC:2219",
        "name": "collagen type IX alpha 3 chain",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/col9a3"
      },
      {
        "slug": "maf",
        "symbol": "MAF",
        "hgnc": "HGNC:6776",
        "name": "MAF bZIP transcription factor",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/maf"
      }
    ]
  }
}