{
  "url": "https://dantelabs.com/traits/stiff-skin",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "stiff-skin",
    "id": "HP:0030053",
    "name": "Stiff skin",
    "definition": "An induration (hardening) of the skin",
    "synonyms": [
      "Indurated skin",
      "Skin induration"
    ],
    "systems": [
      {
        "slug": "abnormality-of-the-integument",
        "name": "Abnormality of the integument",
        "url": "https://dantelabs.com/traits/abnormality-of-the-integument"
      }
    ],
    "broader": [
      {
        "slug": "abnormal-skin-morphology",
        "name": "Abnormal skin structure",
        "url": "https://dantelabs.com/traits/abnormal-skin-morphology"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "donson",
        "symbol": "DONSON",
        "hgnc": "HGNC:2993",
        "name": "DNA replication fork stabilization factor DONSON",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/donson"
      },
      {
        "slug": "fbn1",
        "symbol": "FBN1",
        "hgnc": "HGNC:3603",
        "name": "fibrillin 1",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fbn1"
      },
      {
        "slug": "lmna",
        "symbol": "LMNA",
        "hgnc": "HGNC:6636",
        "name": "lamin A/C",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/lmna"
      },
      {
        "slug": "zmpste24",
        "symbol": "ZMPSTE24",
        "hgnc": "HGNC:12877",
        "name": "zinc metallopeptidase STE24",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/zmpste24"
      },
      {
        "slug": "abca12",
        "symbol": "ABCA12",
        "hgnc": "HGNC:14637",
        "name": "ATP binding cassette subfamily A member 12",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/abca12"
      },
      {
        "slug": "alox12b",
        "symbol": "ALOX12B",
        "hgnc": "HGNC:430",
        "name": "arachidonate 12-lipoxygenase, 12R type",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/alox12b"
      },
      {
        "slug": "aloxe3",
        "symbol": "ALOXE3",
        "hgnc": "HGNC:13743",
        "name": "arachidonate epidermal lipoxygenase 3",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/aloxe3"
      },
      {
        "slug": "asprv1",
        "symbol": "ASPRV1",
        "hgnc": "HGNC:26321",
        "name": "aspartic peptidase retroviral like 1",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/asprv1"
      },
      {
        "slug": "cyp4f22",
        "symbol": "CYP4F22",
        "hgnc": "HGNC:26820",
        "name": "cytochrome P450 family 4 subfamily F member 22",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cyp4f22"
      },
      {
        "slug": "lipn",
        "symbol": "LIPN",
        "hgnc": "HGNC:23452",
        "name": "lipase family member N",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/lipn"
      },
      {
        "slug": "nipal4",
        "symbol": "NIPAL4",
        "hgnc": "HGNC:28018",
        "name": "NIPA like domain containing 4",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/nipal4"
      },
      {
        "slug": "sdr9c7",
        "symbol": "SDR9C7",
        "hgnc": "HGNC:29958",
        "name": "short chain dehydrogenase/reductase family 9C member 7",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sdr9c7"
      },
      {
        "slug": "slc29a3",
        "symbol": "SLC29A3",
        "hgnc": "HGNC:23096",
        "name": "solute carrier family 29 member 3",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/slc29a3"
      },
      {
        "slug": "sult2b1",
        "symbol": "SULT2B1",
        "hgnc": "HGNC:11459",
        "name": "sulfotransferase family 2B member 1",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sult2b1"
      },
      {
        "slug": "tgm1",
        "symbol": "TGM1",
        "hgnc": "HGNC:11777",
        "name": "transglutaminase 1",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tgm1"
      },
      {
        "slug": "ada2",
        "symbol": "ADA2",
        "hgnc": "HGNC:1839",
        "name": "adenosine deaminase 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ada2"
      },
      {
        "slug": "smad4",
        "symbol": "SMAD4",
        "hgnc": "HGNC:6770",
        "name": "SMAD family member 4",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/smad4"
      },
      {
        "slug": "psmb8",
        "symbol": "PSMB8",
        "hgnc": "HGNC:9545",
        "name": "proteasome 20S subunit beta 8",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/psmb8"
      }
    ]
  }
}