{
  "url": "https://dantelabs.com/traits/abnormal-forearm-morphology",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "abnormal-forearm-morphology",
    "id": "HP:0002973",
    "name": "Abnormality of the forearm",
    "label": "Abnormal forearm morphology",
    "definition": "An abnormality of the lower arm.",
    "synonyms": [],
    "systems": [
      {
        "slug": "abnormality-of-limbs",
        "name": "Abnormality of limbs",
        "url": "https://dantelabs.com/traits/abnormality-of-limbs"
      }
    ],
    "broader": [
      {
        "slug": "abnormality-of-the-upper-limb",
        "name": "Abnormality of the upper limb",
        "url": "https://dantelabs.com/traits/abnormality-of-the-upper-limb"
      }
    ],
    "narrower": [
      {
        "slug": "absent-forearm",
        "name": "Absent forearm",
        "genes": 2,
        "url": "https://dantelabs.com/traits/absent-forearm"
      },
      {
        "slug": "forearm-reduction-defects",
        "name": "Forearm reduction defects",
        "genes": 2,
        "url": "https://dantelabs.com/traits/forearm-reduction-defects"
      },
      {
        "slug": "abnormal-forearm-bone-morphology",
        "name": "Abnormality of forearm bone",
        "genes": 1,
        "url": "https://dantelabs.com/traits/abnormal-forearm-bone-morphology"
      },
      {
        "slug": "abnormality-of-the-radioulnar-joints",
        "name": "Abnormality of the radioulnar joints",
        "genes": 1,
        "url": "https://dantelabs.com/traits/abnormality-of-the-radioulnar-joints"
      }
    ],
    "genes": [
      {
        "slug": "col7a1",
        "symbol": "COL7A1",
        "hgnc": "HGNC:2214",
        "name": "collagen type VII alpha 1 chain",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/col7a1"
      },
      {
        "slug": "rai1",
        "symbol": "RAI1",
        "hgnc": "HGNC:9834",
        "name": "retinoic acid induced 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rai1"
      }
    ]
  }
}