{
  "url": "https://dantelabs.com/traits/postaxial-polydactyly-type-a",
  "trait": {
    "bundleId": "2026.10.19-9814e911",
    "release": "2026-09-01",
    "slug": "postaxial-polydactyly-type-a",
    "id": "HP:0005696",
    "name": "Postaxial polydactyly type A",
    "definition": "Supernumerary digits located at the ulnar side of the hand with a complete extra finger and extra metacarpal.",
    "synonyms": [],
    "systems": [
      {
        "slug": "abnormality-of-limbs",
        "name": "Abnormality of limbs",
        "url": "https://dantelabs.com/traits/abnormality-of-limbs"
      },
      {
        "slug": "abnormality-of-the-musculoskeletal-system",
        "name": "Abnormality of the musculoskeletal system",
        "url": "https://dantelabs.com/traits/abnormality-of-the-musculoskeletal-system"
      }
    ],
    "broader": [
      {
        "slug": "postaxial-hand-polydactyly",
        "name": "Extra little finger",
        "url": "https://dantelabs.com/traits/postaxial-hand-polydactyly"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "wdpcp",
        "symbol": "WDPCP",
        "hgnc": "HGNC:28027",
        "name": "WD repeat containing planar cell polarity effector",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/wdpcp"
      },
      {
        "slug": "kiaa0825",
        "symbol": "KIAA0825",
        "hgnc": "HGNC:28532",
        "name": "KIAA0825",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kiaa0825"
      }
    ]
  }
}