{
  "url": "https://dantelabs.com/traits/ulnar-claw",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "ulnar-claw",
    "id": "HP:0001178",
    "name": "Ulnar claw",
    "definition": "An abnormal hand position characterized by hyperextension of the fourth and fifth fingers at the metacarpophalangeal joints and flexion of the interphalangeal joints of the same fingers such that they are curled towards the palm.",
    "synonyms": [],
    "systems": [
      {
        "slug": "abnormality-of-limbs",
        "name": "Abnormality of limbs",
        "url": "https://dantelabs.com/traits/abnormality-of-limbs"
      }
    ],
    "broader": [
      {
        "slug": "abnormal-hand-morphology",
        "name": "Abnormal shape of hand",
        "url": "https://dantelabs.com/traits/abnormal-hand-morphology"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "gdap1",
        "symbol": "GDAP1",
        "hgnc": "HGNC:15968",
        "name": "ganglioside induced differentiation associated protein 1",
        "frequency": "frequent",
        "diseases": 3,
        "url": "https://dantelabs.com/genes/gdap1"
      },
      {
        "slug": "egr2",
        "symbol": "EGR2",
        "hgnc": "HGNC:3239",
        "name": "early growth response 2",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/egr2"
      },
      {
        "slug": "hspb1",
        "symbol": "HSPB1",
        "hgnc": "HGNC:5246",
        "name": "heat shock protein family B (small) member 1",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/hspb1"
      },
      {
        "slug": "mpv17",
        "symbol": "MPV17",
        "hgnc": "HGNC:7224",
        "name": "mitochondrial inner membrane protein MPV17",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mpv17"
      },
      {
        "slug": "mpz",
        "symbol": "MPZ",
        "hgnc": "HGNC:7225",
        "name": "myelin protein zero",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/mpz"
      },
      {
        "slug": "nefl",
        "symbol": "NEFL",
        "hgnc": "HGNC:7739",
        "name": "neurofilament light chain",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/nefl"
      },
      {
        "slug": "pmp22",
        "symbol": "PMP22",
        "hgnc": "HGNC:9118",
        "name": "peripheral myelin protein 22",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/pmp22"
      },
      {
        "slug": "prx",
        "symbol": "PRX",
        "hgnc": "HGNC:13797",
        "name": "periaxin",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/prx"
      },
      {
        "slug": "sbf2",
        "symbol": "SBF2",
        "hgnc": "HGNC:2135",
        "name": "SET binding factor 2",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sbf2"
      }
    ]
  }
}