{
  "url": "https://dantelabs.com/traits/preaxial-polydactyly",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "preaxial-polydactyly",
    "id": "HP:0100258",
    "name": "Preaxial polydactyly",
    "definition": "A form of polydactyly in which the extra digit or digits are localized on the side of the thumb or great toe.",
    "synonyms": [
      "Polydactyly, preaxial"
    ],
    "systems": [
      {
        "slug": "abnormality-of-limbs",
        "name": "Abnormality of limbs",
        "url": "https://dantelabs.com/traits/abnormality-of-limbs"
      },
      {
        "slug": "abnormality-of-the-musculoskeletal-system",
        "name": "Abnormality of the musculoskeletal system",
        "url": "https://dantelabs.com/traits/abnormality-of-the-musculoskeletal-system"
      }
    ],
    "broader": [
      {
        "slug": "polydactyly",
        "name": "More than five fingers or toes on hands or feet",
        "url": "https://dantelabs.com/traits/polydactyly"
      }
    ],
    "narrower": [
      {
        "slug": "preaxial-hand-polydactyly",
        "name": "Extra thumb",
        "genes": 60,
        "url": "https://dantelabs.com/traits/preaxial-hand-polydactyly"
      },
      {
        "slug": "preaxial-foot-polydactyly",
        "name": "Preaxial foot polydactyly",
        "genes": 20,
        "url": "https://dantelabs.com/traits/preaxial-foot-polydactyly"
      }
    ],
    "genes": [
      {
        "slug": "cep120",
        "symbol": "CEP120",
        "hgnc": "HGNC:26690",
        "name": "centrosomal protein 120",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cep120"
      },
      {
        "slug": "flvcr1",
        "symbol": "FLVCR1",
        "hgnc": "HGNC:24682",
        "name": "FLVCR choline and heme transporter 1",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/flvcr1"
      },
      {
        "slug": "gli3",
        "symbol": "GLI3",
        "hgnc": "HGNC:4319",
        "name": "GLI family zinc finger 3",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gli3"
      },
      {
        "slug": "intu",
        "symbol": "INTU",
        "hgnc": "HGNC:29239",
        "name": "inturned planar cell polarity protein",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/intu"
      },
      {
        "slug": "cplane1",
        "symbol": "CPLANE1",
        "hgnc": "HGNC:25801",
        "name": "ciliogenesis and planar polarity effector complex subunit 1",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/cplane1"
      },
      {
        "slug": "ctu2",
        "symbol": "CTU2",
        "hgnc": "HGNC:28005",
        "name": "cytosolic thiouridylase subunit 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ctu2"
      },
      {
        "slug": "fam149b1",
        "symbol": "FAM149B1",
        "hgnc": "HGNC:29162",
        "name": "family with sequence similarity 149 member B1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fam149b1"
      },
      {
        "slug": "ift43",
        "symbol": "IFT43",
        "hgnc": "HGNC:29669",
        "name": "intraflagellar transport 43",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ift43"
      },
      {
        "slug": "kiaa0753",
        "symbol": "KIAA0753",
        "hgnc": "HGNC:29110",
        "name": "KIAA0753",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kiaa0753"
      },
      {
        "slug": "kif7",
        "symbol": "KIF7",
        "hgnc": "HGNC:30497",
        "name": "kinesin family member 7",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kif7"
      },
      {
        "slug": "megf8",
        "symbol": "MEGF8",
        "hgnc": "HGNC:3233",
        "name": "multiple EGF like domains 8",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/megf8"
      },
      {
        "slug": "ofd1",
        "symbol": "OFD1",
        "hgnc": "HGNC:2567",
        "name": "OFD1 centriole and centriolar satellite protein",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ofd1"
      },
      {
        "slug": "pde6d",
        "symbol": "PDE6D",
        "hgnc": "HGNC:8788",
        "name": "phosphodiesterase 6D",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pde6d"
      },
      {
        "slug": "tctn3",
        "symbol": "TCTN3",
        "hgnc": "HGNC:24519",
        "name": "tectonic family member 3",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tctn3"
      },
      {
        "slug": "tmem216",
        "symbol": "TMEM216",
        "hgnc": "HGNC:25018",
        "name": "transmembrane protein 216",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tmem216"
      },
      {
        "slug": "tmem231",
        "symbol": "TMEM231",
        "hgnc": "HGNC:37234",
        "name": "transmembrane protein 231",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tmem231"
      },
      {
        "slug": "topors",
        "symbol": "TOPORS",
        "hgnc": "HGNC:21653",
        "name": "TOP1 binding arginine/serine rich protein, E3 ubiquitin ligase",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/topors"
      },
      {
        "slug": "cep41",
        "symbol": "CEP41",
        "hgnc": "HGNC:12370",
        "name": "centrosomal protein 41",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cep41"
      },
      {
        "slug": "cntnap2",
        "symbol": "CNTNAP2",
        "hgnc": "HGNC:13830",
        "name": "contactin associated protein 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cntnap2"
      },
      {
        "slug": "colec10",
        "symbol": "COLEC10",
        "hgnc": "HGNC:2220",
        "name": "collectin subfamily member 10",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/colec10"
      },
      {
        "slug": "dync2h1",
        "symbol": "DYNC2H1",
        "hgnc": "HGNC:2962",
        "name": "dynein cytoplasmic 2 heavy chain 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/dync2h1"
      },
      {
        "slug": "flna",
        "symbol": "FLNA",
        "hgnc": "HGNC:3754",
        "name": "filamin A",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/flna"
      },
      {
        "slug": "nek9",
        "symbol": "NEK9",
        "hgnc": "HGNC:18591",
        "name": "NIMA related kinase 9",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/nek9"
      },
      {
        "slug": "rnu4atac",
        "symbol": "RNU4ATAC",
        "hgnc": "HGNC:34016",
        "name": "RNA, U4atac small nuclear",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rnu4atac"
      },
      {
        "slug": "sall4",
        "symbol": "SALL4",
        "hgnc": "HGNC:15924",
        "name": "spalt like transcription factor 4",
        "frequency": "occasional",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/sall4"
      },
      {
        "slug": "cenpf",
        "symbol": "CENPF",
        "hgnc": "HGNC:1857",
        "name": "centromere protein F",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cenpf"
      },
      {
        "slug": "c2cd3",
        "symbol": "C2CD3",
        "hgnc": "HGNC:24564",
        "name": "C2 domain containing 3 centriole elongation regulator",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/c2cd3"
      },
      {
        "slug": "cilk1",
        "symbol": "CILK1",
        "hgnc": "HGNC:21219",
        "name": "ciliogenesis associated kinase 1",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cilk1"
      },
      {
        "slug": "dync2i1",
        "symbol": "DYNC2I1",
        "hgnc": "HGNC:21862",
        "name": "dynein 2 intermediate chain 1",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/dync2i1"
      },
      {
        "slug": "fgfr2",
        "symbol": "FGFR2",
        "hgnc": "HGNC:3689",
        "name": "fibroblast growth factor receptor 2",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fgfr2"
      },
      {
        "slug": "ift57",
        "symbol": "IFT57",
        "hgnc": "HGNC:17367",
        "name": "intraflagellar transport 57",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ift57"
      },
      {
        "slug": "kiaa0586",
        "symbol": "KIAA0586",
        "hgnc": "HGNC:19960",
        "name": "KIAA0586",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kiaa0586"
      },
      {
        "slug": "wnt7a",
        "symbol": "WNT7A",
        "hgnc": "HGNC:12786",
        "name": "Wnt family member 7A",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/wnt7a"
      }
    ]
  }
}