{
  "url": "https://dantelabs.com/traits/foot-polydactyly",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "foot-polydactyly",
    "id": "HP:0001829",
    "name": "Duplication of bones of the toes",
    "label": "Foot polydactyly",
    "definition": "A kind of polydactyly characterized by the presence of a supernumerary toe or toes.",
    "synonyms": [
      "Polydactyly of feet",
      "Polydactyly of the foot"
    ],
    "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": "abnormal-toe-morphology",
        "name": "Abnormalities of the toes",
        "url": "https://dantelabs.com/traits/abnormal-toe-morphology"
      },
      {
        "slug": "duplication-involving-bones-of-the-feet",
        "name": "Duplication involving bones of the feet",
        "url": "https://dantelabs.com/traits/duplication-involving-bones-of-the-feet"
      },
      {
        "slug": "polydactyly",
        "name": "More than five fingers or toes on hands or feet",
        "url": "https://dantelabs.com/traits/polydactyly"
      }
    ],
    "narrower": [
      {
        "slug": "postaxial-foot-polydactyly",
        "name": "Extra toe attached near the little toe",
        "genes": 72,
        "url": "https://dantelabs.com/traits/postaxial-foot-polydactyly"
      },
      {
        "slug": "preaxial-foot-polydactyly",
        "name": "Preaxial foot polydactyly",
        "genes": 20,
        "url": "https://dantelabs.com/traits/preaxial-foot-polydactyly"
      },
      {
        "slug": "mesoaxial-foot-polydactyly",
        "name": "Central polydactyly of feet",
        "genes": 6,
        "url": "https://dantelabs.com/traits/mesoaxial-foot-polydactyly"
      },
      {
        "slug": "mirror-image-foot-polydactyly",
        "name": "Mirror image duplication of toes",
        "genes": 1,
        "url": "https://dantelabs.com/traits/mirror-image-foot-polydactyly"
      }
    ],
    "genes": [
      {
        "slug": "dync2li1",
        "symbol": "DYNC2LI1",
        "hgnc": "HGNC:24595",
        "name": "dynein cytoplasmic 2 light intermediate chain 1",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/dync2li1"
      },
      {
        "slug": "evc",
        "symbol": "EVC",
        "hgnc": "HGNC:3497",
        "name": "EvC ciliary complex subunit 1",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/evc"
      },
      {
        "slug": "evc2",
        "symbol": "EVC2",
        "hgnc": "HGNC:19747",
        "name": "EvC ciliary complex subunit 2",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/evc2"
      },
      {
        "slug": "gli1",
        "symbol": "GLI1",
        "hgnc": "HGNC:4317",
        "name": "GLI family zinc finger 1",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gli1"
      },
      {
        "slug": "pik3ca",
        "symbol": "PIK3CA",
        "hgnc": "HGNC:8975",
        "name": "phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha",
        "frequency": "very-frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/pik3ca"
      },
      {
        "slug": "prkaca",
        "symbol": "PRKACA",
        "hgnc": "HGNC:9380",
        "name": "protein kinase cAMP-activated catalytic subunit alpha",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/prkaca"
      },
      {
        "slug": "prkacb",
        "symbol": "PRKACB",
        "hgnc": "HGNC:9381",
        "name": "protein kinase cAMP-activated catalytic subunit beta",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/prkacb"
      },
      {
        "slug": "lmbr1",
        "symbol": "LMBR1",
        "hgnc": "HGNC:13243",
        "name": "limb development membrane protein 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/lmbr1"
      },
      {
        "slug": "ofd1",
        "symbol": "OFD1",
        "hgnc": "HGNC:2567",
        "name": "OFD1 centriole and centriolar satellite protein",
        "frequency": "frequent",
        "diseases": 3,
        "url": "https://dantelabs.com/genes/ofd1"
      },
      {
        "slug": "shh",
        "symbol": "SHH",
        "hgnc": "HGNC:10848",
        "name": "sonic hedgehog signaling molecule",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/shh"
      },
      {
        "slug": "smo",
        "symbol": "SMO",
        "hgnc": "HGNC:11119",
        "name": "smoothened, frizzled class receptor",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/smo"
      },
      {
        "slug": "abca12",
        "symbol": "ABCA12",
        "hgnc": "HGNC:14637",
        "name": "ATP binding cassette subfamily A member 12",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/abca12"
      },
      {
        "slug": "ahi1",
        "symbol": "AHI1",
        "hgnc": "HGNC:21575",
        "name": "Abelson helper integration site 1",
        "frequency": "occasional",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/ahi1"
      },
      {
        "slug": "arl13b",
        "symbol": "ARL13B",
        "hgnc": "HGNC:25419",
        "name": "ARF like GTPase 13B",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/arl13b"
      },
      {
        "slug": "arl3",
        "symbol": "ARL3",
        "hgnc": "HGNC:694",
        "name": "ARF like GTPase 3",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/arl3"
      },
      {
        "slug": "armc9",
        "symbol": "ARMC9",
        "hgnc": "HGNC:20730",
        "name": "armadillo repeat containing 9",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/armc9"
      },
      {
        "slug": "arvcf",
        "symbol": "ARVCF",
        "hgnc": "HGNC:728",
        "name": "ARVCF delta catenin family member",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/arvcf"
      },
      {
        "slug": "b9d1",
        "symbol": "B9D1",
        "hgnc": "HGNC:24123",
        "name": "B9 domain containing 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/b9d1"
      },
      {
        "slug": "b9d2",
        "symbol": "B9D2",
        "hgnc": "HGNC:28636",
        "name": "B9 domain containing 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/b9d2"
      },
      {
        "slug": "casz1",
        "symbol": "CASZ1",
        "hgnc": "HGNC:26002",
        "name": "castor zinc finger 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/casz1"
      },
      {
        "slug": "cby1",
        "symbol": "CBY1",
        "hgnc": "HGNC:1307",
        "name": "chibby 1, beta catenin antagonist",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cby1"
      },
      {
        "slug": "cc2d2a",
        "symbol": "CC2D2A",
        "hgnc": "HGNC:29253",
        "name": "coiled-coil and C2 domain containing 2A",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cc2d2a"
      },
      {
        "slug": "cep104",
        "symbol": "CEP104",
        "hgnc": "HGNC:24866",
        "name": "centrosomal protein 104",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cep104"
      },
      {
        "slug": "cep120",
        "symbol": "CEP120",
        "hgnc": "HGNC:26690",
        "name": "centrosomal protein 120",
        "frequency": "occasional",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/cep120"
      },
      {
        "slug": "cep290",
        "symbol": "CEP290",
        "hgnc": "HGNC:29021",
        "name": "centrosomal protein 290",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cep290"
      },
      {
        "slug": "cep41",
        "symbol": "CEP41",
        "hgnc": "HGNC:12370",
        "name": "centrosomal protein 41",
        "frequency": "occasional",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/cep41"
      },
      {
        "slug": "comt",
        "symbol": "COMT",
        "hgnc": "HGNC:2228",
        "name": "catechol-O-methyltransferase",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/comt"
      },
      {
        "slug": "cplane1",
        "symbol": "CPLANE1",
        "hgnc": "HGNC:25801",
        "name": "ciliogenesis and planar polarity effector complex subunit 1",
        "frequency": "occasional",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/cplane1"
      },
      {
        "slug": "cspp1",
        "symbol": "CSPP1",
        "hgnc": "HGNC:26193",
        "name": "centrosome and spindle pole associated protein 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cspp1"
      },
      {
        "slug": "fam149b1",
        "symbol": "FAM149B1",
        "hgnc": "HGNC:29162",
        "name": "family with sequence similarity 149 member B1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fam149b1"
      },
      {
        "slug": "gabrd",
        "symbol": "GABRD",
        "hgnc": "HGNC:4084",
        "name": "gamma-aminobutyric acid type A receptor subunit delta",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gabrd"
      },
      {
        "slug": "gp1bb",
        "symbol": "GP1BB",
        "hgnc": "HGNC:4440",
        "name": "glycoprotein Ib platelet subunit beta",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gp1bb"
      },
      {
        "slug": "hira",
        "symbol": "HIRA",
        "hgnc": "HGNC:4916",
        "name": "histone cell cycle regulator",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/hira"
      },
      {
        "slug": "hspg2",
        "symbol": "HSPG2",
        "hgnc": "HGNC:5273",
        "name": "heparan sulfate proteoglycan 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/hspg2"
      },
      {
        "slug": "hyls1",
        "symbol": "HYLS1",
        "hgnc": "HGNC:26558",
        "name": "HYLS1 centriolar and ciliogenesis associated",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/hyls1"
      },
      {
        "slug": "ift74",
        "symbol": "IFT74",
        "hgnc": "HGNC:21424",
        "name": "intraflagellar transport 74",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ift74"
      },
      {
        "slug": "inpp5e",
        "symbol": "INPP5E",
        "hgnc": "HGNC:21474",
        "name": "inositol polyphosphate-5-phosphatase E",
        "frequency": "occasional",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/inpp5e"
      },
      {
        "slug": "jmjd1c",
        "symbol": "JMJD1C",
        "hgnc": "HGNC:12313",
        "name": "jumonji domain containing 1C",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/jmjd1c"
      },
      {
        "slug": "katnip",
        "symbol": "KATNIP",
        "hgnc": "HGNC:29068",
        "name": "katanin interacting protein",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/katnip"
      },
      {
        "slug": "kcnab2",
        "symbol": "KCNAB2",
        "hgnc": "HGNC:6229",
        "name": "potassium voltage-gated channel subfamily A regulatory beta subunit 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kcnab2"
      },
      {
        "slug": "kiaa0586",
        "symbol": "KIAA0586",
        "hgnc": "HGNC:19960",
        "name": "KIAA0586",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kiaa0586"
      },
      {
        "slug": "kiaa0753",
        "symbol": "KIAA0753",
        "hgnc": "HGNC:29110",
        "name": "KIAA0753",
        "frequency": "occasional",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/kiaa0753"
      },
      {
        "slug": "kif7",
        "symbol": "KIF7",
        "hgnc": "HGNC:30497",
        "name": "kinesin family member 7",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kif7"
      },
      {
        "slug": "luzp1",
        "symbol": "LUZP1",
        "hgnc": "HGNC:14985",
        "name": "leucine zipper protein 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/luzp1"
      },
      {
        "slug": "mks1",
        "symbol": "MKS1",
        "hgnc": "HGNC:7121",
        "name": "MKS transition zone complex subunit 1",
        "frequency": "occasional",
        "diseases": 3,
        "url": "https://dantelabs.com/genes/mks1"
      },
      {
        "slug": "mmp23b",
        "symbol": "MMP23B",
        "hgnc": "HGNC:7171",
        "name": "matrix metallopeptidase 23B",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mmp23b"
      },
      {
        "slug": "pde6d",
        "symbol": "PDE6D",
        "hgnc": "HGNC:8788",
        "name": "phosphodiesterase 6D",
        "frequency": "occasional",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/pde6d"
      },
      {
        "slug": "pdpn",
        "symbol": "PDPN",
        "hgnc": "HGNC:29602",
        "name": "podoplanin",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pdpn"
      },
      {
        "slug": "pibf1",
        "symbol": "PIBF1",
        "hgnc": "HGNC:23352",
        "name": "progesterone immunomodulatory binding factor 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pibf1"
      },
      {
        "slug": "prdm16",
        "symbol": "PRDM16",
        "hgnc": "HGNC:14000",
        "name": "PR/SET domain 16",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/prdm16"
      },
      {
        "slug": "prkcz",
        "symbol": "PRKCZ",
        "hgnc": "HGNC:9412",
        "name": "protein kinase C zeta",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/prkcz"
      },
      {
        "slug": "rere",
        "symbol": "RERE",
        "hgnc": "HGNC:9965",
        "name": "arginine-glutamic acid dipeptide repeats",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rere"
      },
      {
        "slug": "rreb1",
        "symbol": "RREB1",
        "hgnc": "HGNC:10449",
        "name": "ras responsive element binding protein 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rreb1"
      },
      {
        "slug": "sec24c",
        "symbol": "SEC24C",
        "hgnc": "HGNC:10705",
        "name": "SEC24 homolog C, COPII component",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sec24c"
      },
      {
        "slug": "ski",
        "symbol": "SKI",
        "hgnc": "HGNC:10896",
        "name": "SKI proto-oncogene",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ski"
      },
      {
        "slug": "spen",
        "symbol": "SPEN",
        "hgnc": "HGNC:17575",
        "name": "spen family transcriptional repressor",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/spen"
      },
      {
        "slug": "sufu",
        "symbol": "SUFU",
        "hgnc": "HGNC:16466",
        "name": "SUFU negative regulator of hedgehog signaling",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sufu"
      },
      {
        "slug": "tbx1",
        "symbol": "TBX1",
        "hgnc": "HGNC:11592",
        "name": "T-box transcription factor 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tbx1"
      },
      {
        "slug": "tctn1",
        "symbol": "TCTN1",
        "hgnc": "HGNC:26113",
        "name": "tectonic family member 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tctn1"
      },
      {
        "slug": "tctn2",
        "symbol": "TCTN2",
        "hgnc": "HGNC:25774",
        "name": "tectonic family member 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tctn2"
      },
      {
        "slug": "tctn3",
        "symbol": "TCTN3",
        "hgnc": "HGNC:24519",
        "name": "tectonic family member 3",
        "frequency": "occasional",
        "diseases": 3,
        "url": "https://dantelabs.com/genes/tctn3"
      },
      {
        "slug": "tmem138",
        "symbol": "TMEM138",
        "hgnc": "HGNC:26944",
        "name": "transmembrane protein 138",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tmem138"
      },
      {
        "slug": "tmem216",
        "symbol": "TMEM216",
        "hgnc": "HGNC:25018",
        "name": "transmembrane protein 216",
        "frequency": "occasional",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/tmem216"
      },
      {
        "slug": "tmem218",
        "symbol": "TMEM218",
        "hgnc": "HGNC:27344",
        "name": "transmembrane protein 218",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tmem218"
      },
      {
        "slug": "tmem231",
        "symbol": "TMEM231",
        "hgnc": "HGNC:37234",
        "name": "transmembrane protein 231",
        "frequency": "occasional",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/tmem231"
      },
      {
        "slug": "tmem237",
        "symbol": "TMEM237",
        "hgnc": "HGNC:14432",
        "name": "transmembrane protein 237",
        "frequency": "occasional",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/tmem237"
      },
      {
        "slug": "tmem67",
        "symbol": "TMEM67",
        "hgnc": "HGNC:28396",
        "name": "transmembrane protein 67",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tmem67"
      },
      {
        "slug": "togaram1",
        "symbol": "TOGARAM1",
        "hgnc": "HGNC:19959",
        "name": "TOG array regulator of axonemal microtubules 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/togaram1"
      },
      {
        "slug": "topors",
        "symbol": "TOPORS",
        "hgnc": "HGNC:21653",
        "name": "TOP1 binding arginine/serine rich protein, E3 ubiquitin ligase",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/topors"
      },
      {
        "slug": "ube4b",
        "symbol": "UBE4B",
        "hgnc": "HGNC:12500",
        "name": "ubiquitination factor E4B",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ube4b"
      },
      {
        "slug": "ufd1",
        "symbol": "UFD1",
        "hgnc": "HGNC:12520",
        "name": "ubiquitin recognition factor in ER associated degradation 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ufd1"
      },
      {
        "slug": "znf423",
        "symbol": "ZNF423",
        "hgnc": "HGNC:16762",
        "name": "zinc finger protein 423",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/znf423"
      },
      {
        "slug": "hepacam",
        "symbol": "HEPACAM",
        "hgnc": "HGNC:26361",
        "name": "hepatic and glial cell adhesion molecule",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/hepacam"
      },
      {
        "slug": "pten",
        "symbol": "PTEN",
        "hgnc": "HGNC:9588",
        "name": "phosphatase and tensin homolog",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pten"
      },
      {
        "slug": "arl6",
        "symbol": "ARL6",
        "hgnc": "HGNC:13210",
        "name": "ARF like GTPase 6",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/arl6"
      },
      {
        "slug": "bbs1",
        "symbol": "BBS1",
        "hgnc": "HGNC:966",
        "name": "Bardet-Biedl syndrome 1",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/bbs1"
      },
      {
        "slug": "ccdc28b",
        "symbol": "CCDC28B",
        "hgnc": "HGNC:28163",
        "name": "coiled-coil domain containing 28B",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ccdc28b"
      },
      {
        "slug": "porcn",
        "symbol": "PORCN",
        "hgnc": "HGNC:17652",
        "name": "porcupine O-acyltransferase",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/porcn"
      }
    ]
  }
}