{
  "url": "https://dantelabs.com/traits/delayed-epiphyseal-ossification",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "delayed-epiphyseal-ossification",
    "id": "HP:0002663",
    "name": "Delayed maturation of end part of long bone",
    "label": "Delayed epiphyseal ossification",
    "synonyms": [
      "Delayed epiphyseal maturation",
      "Delayed opacification of the epiphyses",
      "Epiphyseal ossification delay"
    ],
    "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-epiphyseal-ossification",
        "name": "Abnormal maturation of the end part of a bone",
        "url": "https://dantelabs.com/traits/abnormal-epiphyseal-ossification"
      },
      {
        "slug": "abnormal-epiphysis-morphology",
        "name": "Abnormal shape of end part of bone",
        "url": "https://dantelabs.com/traits/abnormal-epiphysis-morphology"
      }
    ],
    "narrower": [
      {
        "slug": "delayed-proximal-femoral-epiphyseal-ossification",
        "name": "Delayed proximal femoral epiphyseal ossification",
        "genes": 18,
        "url": "https://dantelabs.com/traits/delayed-proximal-femoral-epiphyseal-ossification"
      },
      {
        "slug": "delayed-phalangeal-epiphyseal-ossification",
        "name": "Delayed bone maturation of end part of digital bone",
        "genes": 2,
        "url": "https://dantelabs.com/traits/delayed-phalangeal-epiphyseal-ossification"
      },
      {
        "slug": "delayed-upper-limb-epiphyseal-ossification",
        "name": "Delayed maturation of the end part of the upper limb bone",
        "genes": 1,
        "url": "https://dantelabs.com/traits/delayed-upper-limb-epiphyseal-ossification"
      }
    ],
    "genes": [
      {
        "slug": "comp",
        "symbol": "COMP",
        "hgnc": "HGNC:2227",
        "name": "cartilage oligomeric matrix protein",
        "frequency": "obligate",
        "diseases": 4,
        "url": "https://dantelabs.com/genes/comp"
      },
      {
        "slug": "iars2",
        "symbol": "IARS2",
        "hgnc": "HGNC:29685",
        "name": "isoleucyl-tRNA synthetase 2, mitochondrial",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/iars2"
      },
      {
        "slug": "inppl1",
        "symbol": "INPPL1",
        "hgnc": "HGNC:6080",
        "name": "inositol polyphosphate phosphatase like 1",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/inppl1"
      },
      {
        "slug": "lonp1",
        "symbol": "LONP1",
        "hgnc": "HGNC:9479",
        "name": "lon peptidase 1, mitochondrial",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/lonp1"
      },
      {
        "slug": "mir140",
        "symbol": "MIR140",
        "hgnc": "HGNC:31527",
        "name": "microRNA 140",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mir140"
      },
      {
        "slug": "pam16",
        "symbol": "PAM16",
        "hgnc": "HGNC:29679",
        "name": "presequence translocase associated motor 16",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pam16"
      },
      {
        "slug": "col2a1",
        "symbol": "COL2A1",
        "hgnc": "HGNC:2200",
        "name": "collagen type II alpha 1 chain",
        "frequency": "very-frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/col2a1"
      },
      {
        "slug": "cyp19a1",
        "symbol": "CYP19A1",
        "hgnc": "HGNC:2594",
        "name": "cytochrome P450 family 19 subfamily A member 1",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cyp19a1"
      },
      {
        "slug": "cyp27b1",
        "symbol": "CYP27B1",
        "hgnc": "HGNC:2606",
        "name": "cytochrome P450 family 27 subfamily B member 1",
        "frequency": "very-frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/cyp27b1"
      },
      {
        "slug": "cyp2r1",
        "symbol": "CYP2R1",
        "hgnc": "HGNC:20580",
        "name": "cytochrome P450 family 2 subfamily R member 1",
        "frequency": "very-frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/cyp2r1"
      },
      {
        "slug": "esr1",
        "symbol": "ESR1",
        "hgnc": "HGNC:3467",
        "name": "estrogen receptor 1",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/esr1"
      },
      {
        "slug": "kif7",
        "symbol": "KIF7",
        "hgnc": "HGNC:30497",
        "name": "kinesin family member 7",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kif7"
      },
      {
        "slug": "trpv4",
        "symbol": "TRPV4",
        "hgnc": "HGNC:18083",
        "name": "transient receptor potential cation channel subfamily V member 4",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/trpv4"
      },
      {
        "slug": "fgfr2",
        "symbol": "FGFR2",
        "hgnc": "HGNC:3689",
        "name": "fibroblast growth factor receptor 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fgfr2"
      },
      {
        "slug": "kif22",
        "symbol": "KIF22",
        "hgnc": "HGNC:6391",
        "name": "kinesin family member 22",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kif22"
      },
      {
        "slug": "pth1r",
        "symbol": "PTH1R",
        "hgnc": "HGNC:9608",
        "name": "parathyroid hormone 1 receptor",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/pth1r"
      },
      {
        "slug": "ddrgk1",
        "symbol": "DDRGK1",
        "hgnc": "HGNC:16110",
        "name": "DDRGK domain containing 1",
        "frequency": "occasional",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/ddrgk1"
      },
      {
        "slug": "rnu4atac",
        "symbol": "RNU4ATAC",
        "hgnc": "HGNC:34016",
        "name": "RNA, U4atac small nuclear",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rnu4atac"
      },
      {
        "slug": "sox9",
        "symbol": "SOX9",
        "hgnc": "HGNC:11204",
        "name": "SRY-box transcription factor 9",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sox9"
      },
      {
        "slug": "tonsl",
        "symbol": "TONSL",
        "hgnc": "HGNC:7801",
        "name": "tonsoku like, DNA repair protein",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tonsl"
      },
      {
        "slug": "clcn5",
        "symbol": "CLCN5",
        "hgnc": "HGNC:2023",
        "name": "Cl-/H+ antiporter 5",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/clcn5"
      },
      {
        "slug": "col9a3",
        "symbol": "COL9A3",
        "hgnc": "HGNC:2219",
        "name": "collagen type IX alpha 3 chain",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/col9a3"
      },
      {
        "slug": "gpx4",
        "symbol": "GPX4",
        "hgnc": "HGNC:4556",
        "name": "glutathione peroxidase 4",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gpx4"
      },
      {
        "slug": "pisd",
        "symbol": "PISD",
        "hgnc": "HGNC:8999",
        "name": "phosphatidylserine decarboxylase",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pisd"
      },
      {
        "slug": "slc34a3",
        "symbol": "SLC34A3",
        "hgnc": "HGNC:20305",
        "name": "solute carrier family 34 member 3",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/slc34a3"
      },
      {
        "slug": "vdr",
        "symbol": "VDR",
        "hgnc": "HGNC:12679",
        "name": "vitamin D receptor",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/vdr"
      }
    ]
  }
}