{
  "url": "https://dantelabs.com/traits/synovial-lining-hyperplasia",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "synovial-lining-hyperplasia",
    "id": "HP:0005186",
    "name": "Synovial lining hyperplasia",
    "definition": "Synovial hyperplasia involves proliferation of mesenchymal stromal/stem cells and leads to synovial thickening, which can be observed radiographically.",
    "synonyms": [
      "Synovial hyperplasia",
      "Synovial hypertrophy"
    ],
    "systems": [
      {
        "slug": "abnormality-of-the-musculoskeletal-system",
        "name": "Abnormality of the musculoskeletal system",
        "url": "https://dantelabs.com/traits/abnormality-of-the-musculoskeletal-system"
      }
    ],
    "broader": [
      {
        "slug": "abnormal-synovial-membrane-morphology",
        "name": "Abnormal synovial membrane morphology",
        "url": "https://dantelabs.com/traits/abnormal-synovial-membrane-morphology"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "irf4",
        "symbol": "IRF4",
        "hgnc": "HGNC:6119",
        "name": "interferon regulatory factor 4",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/irf4"
      },
      {
        "slug": "ankrd55",
        "symbol": "ANKRD55",
        "hgnc": "HGNC:25681",
        "name": "ankyrin repeat domain 55",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ankrd55"
      },
      {
        "slug": "cd247",
        "symbol": "CD247",
        "hgnc": "HGNC:1677",
        "name": "CD247 molecule",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cd247"
      },
      {
        "slug": "il2ra",
        "symbol": "IL2RA",
        "hgnc": "HGNC:6008",
        "name": "interleukin 2 receptor subunit alpha",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/il2ra"
      },
      {
        "slug": "il2rb",
        "symbol": "IL2RB",
        "hgnc": "HGNC:6009",
        "name": "interleukin 2 receptor subunit beta",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/il2rb"
      },
      {
        "slug": "ptpn2",
        "symbol": "PTPN2",
        "hgnc": "HGNC:9650",
        "name": "protein tyrosine phosphatase non-receptor type 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ptpn2"
      },
      {
        "slug": "ptpn22",
        "symbol": "PTPN22",
        "hgnc": "HGNC:9652",
        "name": "protein tyrosine phosphatase non-receptor type 22",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ptpn22"
      },
      {
        "slug": "stat4",
        "symbol": "STAT4",
        "hgnc": "HGNC:11365",
        "name": "signal transducer and activator of transcription 4",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/stat4"
      },
      {
        "slug": "prg4",
        "symbol": "PRG4",
        "hgnc": "HGNC:9364",
        "name": "proteoglycan 4",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/prg4"
      }
    ]
  }
}