{
  "url": "https://dantelabs.com/traits/chronic-pain",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "chronic-pain",
    "id": "HP:0012532",
    "name": "Chronic pain",
    "definition": "Persistent pain, usually defined as pain that has lasted longer than 3 to 6 months.",
    "synonyms": [
      "Long-lasting pain"
    ],
    "systems": [
      {
        "slug": "constitutional-symptom",
        "name": "Constitutional symptom",
        "url": "https://dantelabs.com/traits/constitutional-symptom"
      }
    ],
    "broader": [
      {
        "slug": "pain",
        "name": "Pain",
        "url": "https://dantelabs.com/traits/pain"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "tgfb2",
        "symbol": "TGFB2",
        "hgnc": "HGNC:11768",
        "name": "transforming growth factor beta 2",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tgfb2"
      },
      {
        "slug": "col7a1",
        "symbol": "COL7A1",
        "hgnc": "HGNC:2214",
        "name": "collagen type VII alpha 1 chain",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/col7a1"
      },
      {
        "slug": "mmp1",
        "symbol": "MMP1",
        "hgnc": "HGNC:7155",
        "name": "matrix metallopeptidase 1",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mmp1"
      },
      {
        "slug": "ctsk",
        "symbol": "CTSK",
        "hgnc": "HGNC:2536",
        "name": "cathepsin K",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ctsk"
      },
      {
        "slug": "dnmt3b",
        "symbol": "DNMT3B",
        "hgnc": "HGNC:2979",
        "name": "DNA methyltransferase 3 beta",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/dnmt3b"
      },
      {
        "slug": "dux4",
        "symbol": "DUX4",
        "hgnc": "HGNC:50800",
        "name": "double homeobox 4",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/dux4"
      },
      {
        "slug": "dux4l1",
        "symbol": "DUX4L1",
        "hgnc": "HGNC:3082",
        "name": "double homeobox 4 like 1 (pseudogene)",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/dux4l1"
      },
      {
        "slug": "frg1",
        "symbol": "FRG1",
        "hgnc": "HGNC:3954",
        "name": "FSHD region gene 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/frg1"
      },
      {
        "slug": "gla",
        "symbol": "GLA",
        "hgnc": "HGNC:4296",
        "name": "galactosidase alpha",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gla"
      },
      {
        "slug": "smchd1",
        "symbol": "SMCHD1",
        "hgnc": "HGNC:29090",
        "name": "structural maintenance of chromosomes flexible hinge domain containing 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/smchd1"
      },
      {
        "slug": "flvcr1",
        "symbol": "FLVCR1",
        "hgnc": "HGNC:24682",
        "name": "FLVCR choline and heme transporter 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/flvcr1"
      },
      {
        "slug": "tafazzin",
        "symbol": "TAFAZZIN",
        "hgnc": "HGNC:11577",
        "name": "tafazzin, phospholipid-lysophospholipid transacylase",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tafazzin"
      },
      {
        "slug": "zfx",
        "symbol": "ZFX",
        "hgnc": "HGNC:12869",
        "name": "zinc finger protein X-linked",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/zfx"
      },
      {
        "slug": "atxn3",
        "symbol": "ATXN3",
        "hgnc": "HGNC:7106",
        "name": "ataxin 3",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/atxn3"
      }
    ]
  }
}