{
  "url": "https://dantelabs.com/traits/vertebral-fusion",
  "trait": {
    "bundleId": "2026.10.19-9814e911",
    "release": "2026-09-01",
    "slug": "vertebral-fusion",
    "id": "HP:0002948",
    "name": "Vertebral fusion",
    "definition": "A developmental defect leading to the union of two adjacent vertebrae.",
    "synonyms": [
      "Congenital spinal fusion",
      "Congenitally fused vertebrae",
      "Fusion of vertebral bodies",
      "Vertebral body fusion"
    ],
    "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": "synostosis-of-joints",
        "name": "Fusion of joints",
        "url": "https://dantelabs.com/traits/synostosis-of-joints"
      },
      {
        "slug": "vertebral-segmentation-defect",
        "name": "Vertebral segmentation defect",
        "url": "https://dantelabs.com/traits/vertebral-segmentation-defect"
      }
    ],
    "narrower": [
      {
        "slug": "fused-cervical-vertebrae",
        "name": "Fused neck",
        "genes": 25,
        "url": "https://dantelabs.com/traits/fused-cervical-vertebrae"
      },
      {
        "slug": "abnormal-vertebral-segmentation-and-fusion",
        "name": "Abnormal vertebral segmentation and fusion",
        "genes": 11,
        "url": "https://dantelabs.com/traits/abnormal-vertebral-segmentation-and-fusion"
      },
      {
        "slug": "block-vertebrae",
        "name": "Block vertebrae",
        "genes": 6,
        "url": "https://dantelabs.com/traits/block-vertebrae"
      },
      {
        "slug": "anterior-vertebral-fusion",
        "name": "Anterior vertebral fusion",
        "genes": 1,
        "url": "https://dantelabs.com/traits/anterior-vertebral-fusion"
      },
      {
        "slug": "fused-thoracic-vertebrae",
        "name": "Fused thoracic vertebrae",
        "genes": 1,
        "url": "https://dantelabs.com/traits/fused-thoracic-vertebrae"
      }
    ],
    "genes": [
      {
        "slug": "hes7",
        "symbol": "HES7",
        "hgnc": "HGNC:15977",
        "name": "hes family bHLH transcription factor 7",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/hes7"
      },
      {
        "slug": "tbx6",
        "symbol": "TBX6",
        "hgnc": "HGNC:11605",
        "name": "T-box transcription factor 6",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tbx6"
      },
      {
        "slug": "dll3",
        "symbol": "DLL3",
        "hgnc": "HGNC:2909",
        "name": "delta like canonical Notch ligand 3",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/dll3"
      },
      {
        "slug": "gpc3",
        "symbol": "GPC3",
        "hgnc": "HGNC:4451",
        "name": "glypican 3",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gpc3"
      },
      {
        "slug": "gpc4",
        "symbol": "GPC4",
        "hgnc": "HGNC:4452",
        "name": "glypican 4",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gpc4"
      },
      {
        "slug": "mesp2",
        "symbol": "MESP2",
        "hgnc": "HGNC:29659",
        "name": "mesoderm posterior bHLH transcription factor 2",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mesp2"
      },
      {
        "slug": "ankrd11",
        "symbol": "ANKRD11",
        "hgnc": "HGNC:21316",
        "name": "ankyrin repeat domain 11",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/ankrd11"
      },
      {
        "slug": "flnb",
        "symbol": "FLNB",
        "hgnc": "HGNC:3755",
        "name": "filamin B",
        "frequency": "frequent",
        "diseases": 3,
        "url": "https://dantelabs.com/genes/flnb"
      },
      {
        "slug": "myh3",
        "symbol": "MYH3",
        "hgnc": "HGNC:7573",
        "name": "myosin heavy chain 3",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/myh3"
      },
      {
        "slug": "notch3",
        "symbol": "NOTCH3",
        "hgnc": "HGNC:7883",
        "name": "notch receptor 3",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/notch3"
      },
      {
        "slug": "ptch1",
        "symbol": "PTCH1",
        "hgnc": "HGNC:9585",
        "name": "patched 1",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/ptch1"
      },
      {
        "slug": "ptch2",
        "symbol": "PTCH2",
        "hgnc": "HGNC:9586",
        "name": "patched 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ptch2"
      },
      {
        "slug": "sox5",
        "symbol": "SOX5",
        "hgnc": "HGNC:11201",
        "name": "SRY-box transcription factor 5",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sox5"
      },
      {
        "slug": "sufu",
        "symbol": "SUFU",
        "hgnc": "HGNC:16466",
        "name": "SUFU negative regulator of hedgehog signaling",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sufu"
      },
      {
        "slug": "tmco1",
        "symbol": "TMCO1",
        "hgnc": "HGNC:18188",
        "name": "transmembrane and coiled-coil domains 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tmco1"
      },
      {
        "slug": "col2a1",
        "symbol": "COL2A1",
        "hgnc": "HGNC:2200",
        "name": "collagen type II alpha 1 chain",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/col2a1"
      },
      {
        "slug": "fn1",
        "symbol": "FN1",
        "hgnc": "HGNC:3778",
        "name": "fibronectin 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fn1"
      },
      {
        "slug": "kansl1",
        "symbol": "KANSL1",
        "hgnc": "HGNC:24565",
        "name": "KAT8 regulatory NSL complex subunit 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kansl1"
      },
      {
        "slug": "porcn",
        "symbol": "PORCN",
        "hgnc": "HGNC:17652",
        "name": "porcupine O-acyltransferase",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/porcn"
      },
      {
        "slug": "puf60",
        "symbol": "PUF60",
        "hgnc": "HGNC:17042",
        "name": "poly(U) binding splicing factor 60",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/puf60"
      },
      {
        "slug": "sall4",
        "symbol": "SALL4",
        "hgnc": "HGNC:15924",
        "name": "spalt like transcription factor 4",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sall4"
      },
      {
        "slug": "chrna1",
        "symbol": "CHRNA1",
        "hgnc": "HGNC:1955",
        "name": "cholinergic receptor nicotinic alpha 1 subunit",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/chrna1"
      },
      {
        "slug": "chrnd",
        "symbol": "CHRND",
        "hgnc": "HGNC:1965",
        "name": "cholinergic receptor nicotinic delta subunit",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/chrnd"
      },
      {
        "slug": "chrng",
        "symbol": "CHRNG",
        "hgnc": "HGNC:1967",
        "name": "cholinergic receptor nicotinic gamma subunit",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/chrng"
      },
      {
        "slug": "cplx1",
        "symbol": "CPLX1",
        "hgnc": "HGNC:2309",
        "name": "complexin 1",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cplx1"
      },
      {
        "slug": "ctbp1",
        "symbol": "CTBP1",
        "hgnc": "HGNC:2494",
        "name": "C-terminal binding protein 1",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ctbp1"
      },
      {
        "slug": "fgfrl1",
        "symbol": "FGFRL1",
        "hgnc": "HGNC:3693",
        "name": "fibroblast growth factor receptor like 1",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fgfrl1"
      },
      {
        "slug": "fkrp",
        "symbol": "FKRP",
        "hgnc": "HGNC:17997",
        "name": "fukutin related protein",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/fkrp"
      },
      {
        "slug": "gdf5",
        "symbol": "GDF5",
        "hgnc": "HGNC:4220",
        "name": "growth differentiation factor 5",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gdf5"
      },
      {
        "slug": "hgd",
        "symbol": "HGD",
        "hgnc": "HGNC:4892",
        "name": "homogentisate 1,2-dioxygenase",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/hgd"
      },
      {
        "slug": "letm1",
        "symbol": "LETM1",
        "hgnc": "HGNC:6556",
        "name": "leucine zipper and EF-hand containing transmembrane protein 1",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/letm1"
      },
      {
        "slug": "nadsyn1",
        "symbol": "NADSYN1",
        "hgnc": "HGNC:29832",
        "name": "NAD synthetase 1",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/nadsyn1"
      },
      {
        "slug": "nsd2",
        "symbol": "NSD2",
        "hgnc": "HGNC:12766",
        "name": "nuclear receptor binding SET domain protein 2",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/nsd2"
      },
      {
        "slug": "ror2",
        "symbol": "ROR2",
        "hgnc": "HGNC:10257",
        "name": "ROR family WNT receptor 2",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/ror2"
      },
      {
        "slug": "six6",
        "symbol": "SIX6",
        "hgnc": "HGNC:10892",
        "name": "SIX homeobox 6",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/six6"
      },
      {
        "slug": "smad4",
        "symbol": "SMAD4",
        "hgnc": "HGNC:6770",
        "name": "SMAD family member 4",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/smad4"
      },
      {
        "slug": "sox2",
        "symbol": "SOX2",
        "hgnc": "HGNC:11195",
        "name": "SRY-box transcription factor 2",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sox2"
      }
    ]
  }
}