{
  "url": "https://dantelabs.com/traits/triphalangeal-thumb",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "triphalangeal-thumb",
    "id": "HP:0001199",
    "name": "Finger-like thumb",
    "label": "Triphalangeal thumb",
    "definition": "A thumb with three phalanges in a single, proximo-distal axis. Thus, this term applies if the thumb has an accessory phalanx, leading to a digit like appearance of the thumb.",
    "synonyms": [
      "Accessory phalanx of the thumb",
      "Digitalized thumb",
      "Triphalangeal thumbs",
      "Triphalangy of thumb"
    ],
    "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": "abnormality-of-thumb-phalanx",
        "name": "Abnormality of the thumb bones",
        "url": "https://dantelabs.com/traits/abnormality-of-thumb-phalanx"
      }
    ],
    "narrower": [
      {
        "slug": "bilateral-triphalangeal-thumbs",
        "name": "Bilateral triphalangeal thumbs",
        "genes": 3,
        "url": "https://dantelabs.com/traits/bilateral-triphalangeal-thumbs"
      }
    ],
    "genes": [
      {
        "slug": "rpl15",
        "symbol": "RPL15",
        "hgnc": "HGNC:10306",
        "name": "ribosomal protein L15",
        "frequency": "obligate",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/rpl15"
      },
      {
        "slug": "top2b",
        "symbol": "TOP2B",
        "hgnc": "HGNC:11990",
        "name": "DNA topoisomerase II beta",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/top2b"
      },
      {
        "slug": "dact1",
        "symbol": "DACT1",
        "hgnc": "HGNC:17748",
        "name": "dishevelled binding antagonist of beta catenin 1",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/dact1"
      },
      {
        "slug": "lmbr1",
        "symbol": "LMBR1",
        "hgnc": "HGNC:13243",
        "name": "limb development membrane protein 1",
        "frequency": "very-frequent",
        "diseases": 5,
        "url": "https://dantelabs.com/genes/lmbr1"
      },
      {
        "slug": "sall1",
        "symbol": "SALL1",
        "hgnc": "HGNC:10524",
        "name": "spalt like transcription factor 1",
        "frequency": "very-frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/sall1"
      },
      {
        "slug": "atp6v1b2",
        "symbol": "ATP6V1B2",
        "hgnc": "HGNC:854",
        "name": "ATPase H+ transporting V1 subunit B2",
        "frequency": "frequent",
        "diseases": 3,
        "url": "https://dantelabs.com/genes/atp6v1b2"
      },
      {
        "slug": "gli3",
        "symbol": "GLI3",
        "hgnc": "HGNC:4319",
        "name": "GLI family zinc finger 3",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/gli3"
      },
      {
        "slug": "kcnn3",
        "symbol": "KCNN3",
        "hgnc": "HGNC:6292",
        "name": "potassium calcium-activated channel subfamily N member 3",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kcnn3"
      },
      {
        "slug": "kif7",
        "symbol": "KIF7",
        "hgnc": "HGNC:30497",
        "name": "kinesin family member 7",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kif7"
      },
      {
        "slug": "rpl5",
        "symbol": "RPL5",
        "hgnc": "HGNC:10360",
        "name": "ribosomal protein L5",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/rpl5"
      },
      {
        "slug": "sall4",
        "symbol": "SALL4",
        "hgnc": "HGNC:15924",
        "name": "spalt like transcription factor 4",
        "frequency": "frequent",
        "diseases": 5,
        "url": "https://dantelabs.com/genes/sall4"
      },
      {
        "slug": "tbc1d24",
        "symbol": "TBC1D24",
        "hgnc": "HGNC:29203",
        "name": "TBC1 domain family member 24",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/tbc1d24"
      },
      {
        "slug": "tbx5",
        "symbol": "TBX5",
        "hgnc": "HGNC:11604",
        "name": "T-box transcription factor 5",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/tbx5"
      },
      {
        "slug": "ada2",
        "symbol": "ADA2",
        "hgnc": "HGNC:1839",
        "name": "adenosine deaminase 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ada2"
      },
      {
        "slug": "brca1",
        "symbol": "BRCA1",
        "hgnc": "HGNC:1100",
        "name": "BRCA1 DNA repair associated",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/brca1"
      },
      {
        "slug": "brca2",
        "symbol": "BRCA2",
        "hgnc": "HGNC:1101",
        "name": "BRCA2 DNA repair associated",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/brca2"
      },
      {
        "slug": "brip1",
        "symbol": "BRIP1",
        "hgnc": "HGNC:20473",
        "name": "BRCA1 interacting DNA helicase 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/brip1"
      },
      {
        "slug": "chn1",
        "symbol": "CHN1",
        "hgnc": "HGNC:1943",
        "name": "chimerin 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/chn1"
      },
      {
        "slug": "ercc4",
        "symbol": "ERCC4",
        "hgnc": "HGNC:3436",
        "name": "ERCC excision repair 4, endonuclease catalytic subunit",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ercc4"
      },
      {
        "slug": "faap100",
        "symbol": "FAAP100",
        "hgnc": "HGNC:26171",
        "name": "FA core complex associated protein 100",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/faap100"
      },
      {
        "slug": "fanca",
        "symbol": "FANCA",
        "hgnc": "HGNC:3582",
        "name": "FA complementation group A",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fanca"
      },
      {
        "slug": "fancb",
        "symbol": "FANCB",
        "hgnc": "HGNC:3583",
        "name": "FA complementation group B",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fancb"
      },
      {
        "slug": "fancc",
        "symbol": "FANCC",
        "hgnc": "HGNC:3584",
        "name": "FA complementation group C",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fancc"
      },
      {
        "slug": "fancd2",
        "symbol": "FANCD2",
        "hgnc": "HGNC:3585",
        "name": "FA complementation group D2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fancd2"
      },
      {
        "slug": "fance",
        "symbol": "FANCE",
        "hgnc": "HGNC:3586",
        "name": "FA complementation group E",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fance"
      },
      {
        "slug": "fancf",
        "symbol": "FANCF",
        "hgnc": "HGNC:3587",
        "name": "FA complementation group F",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fancf"
      },
      {
        "slug": "fancg",
        "symbol": "FANCG",
        "hgnc": "HGNC:3588",
        "name": "FA complementation group G",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fancg"
      },
      {
        "slug": "fanci",
        "symbol": "FANCI",
        "hgnc": "HGNC:25568",
        "name": "FA complementation group I",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fanci"
      },
      {
        "slug": "fancl",
        "symbol": "FANCL",
        "hgnc": "HGNC:20748",
        "name": "FA complementation group L",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fancl"
      },
      {
        "slug": "fancm",
        "symbol": "FANCM",
        "hgnc": "HGNC:23168",
        "name": "FA complementation group M",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fancm"
      },
      {
        "slug": "fgfr2",
        "symbol": "FGFR2",
        "hgnc": "HGNC:3689",
        "name": "fibroblast growth factor receptor 2",
        "frequency": "occasional",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/fgfr2"
      },
      {
        "slug": "fgfr3",
        "symbol": "FGFR3",
        "hgnc": "HGNC:3690",
        "name": "fibroblast growth factor receptor 3",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fgfr3"
      },
      {
        "slug": "gata1",
        "symbol": "GATA1",
        "hgnc": "HGNC:4170",
        "name": "GATA binding protein 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gata1"
      },
      {
        "slug": "heatr3",
        "symbol": "HEATR3",
        "hgnc": "HGNC:26087",
        "name": "HEAT repeat containing 3",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/heatr3"
      },
      {
        "slug": "mad2l2",
        "symbol": "MAD2L2",
        "hgnc": "HGNC:6764",
        "name": "mitotic arrest deficient 2 like 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mad2l2"
      },
      {
        "slug": "mafb",
        "symbol": "MAFB",
        "hgnc": "HGNC:6408",
        "name": "MAF bZIP transcription factor B",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mafb"
      },
      {
        "slug": "msx2",
        "symbol": "MSX2",
        "hgnc": "HGNC:7392",
        "name": "msh homeobox 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/msx2"
      },
      {
        "slug": "palb2",
        "symbol": "PALB2",
        "hgnc": "HGNC:26144",
        "name": "partner and localizer of BRCA2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/palb2"
      },
      {
        "slug": "pigb",
        "symbol": "PIGB",
        "hgnc": "HGNC:8959",
        "name": "phosphatidylinositol glycan anchor biosynthesis class B",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pigb"
      },
      {
        "slug": "rad51",
        "symbol": "RAD51",
        "hgnc": "HGNC:9817",
        "name": "RAD51 recombinase",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rad51"
      },
      {
        "slug": "rad51c",
        "symbol": "RAD51C",
        "hgnc": "HGNC:9820",
        "name": "RAD51 paralog C",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rad51c"
      },
      {
        "slug": "rbmx",
        "symbol": "RBMX",
        "hgnc": "HGNC:9910",
        "name": "RNA binding motif protein X-linked",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rbmx"
      },
      {
        "slug": "rfwd3",
        "symbol": "RFWD3",
        "hgnc": "HGNC:25539",
        "name": "ring finger and WD repeat domain 3",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rfwd3"
      },
      {
        "slug": "rpl11",
        "symbol": "RPL11",
        "hgnc": "HGNC:10301",
        "name": "ribosomal protein L11",
        "frequency": "occasional",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/rpl11"
      },
      {
        "slug": "rpl18",
        "symbol": "RPL18",
        "hgnc": "HGNC:10310",
        "name": "ribosomal protein L18",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rpl18"
      },
      {
        "slug": "rpl26",
        "symbol": "RPL26",
        "hgnc": "HGNC:10327",
        "name": "ribosomal protein L26",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rpl26"
      },
      {
        "slug": "rpl27",
        "symbol": "RPL27",
        "hgnc": "HGNC:10328",
        "name": "ribosomal protein L27",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rpl27"
      },
      {
        "slug": "rpl31",
        "symbol": "RPL31",
        "hgnc": "HGNC:10334",
        "name": "ribosomal protein L31",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rpl31"
      },
      {
        "slug": "rpl35",
        "symbol": "RPL35",
        "hgnc": "HGNC:10344",
        "name": "ribosomal protein L35",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rpl35"
      },
      {
        "slug": "rpl35a",
        "symbol": "RPL35A",
        "hgnc": "HGNC:10345",
        "name": "ribosomal protein L35a",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rpl35a"
      },
      {
        "slug": "rpl8",
        "symbol": "RPL8",
        "hgnc": "HGNC:10368",
        "name": "ribosomal protein L8",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rpl8"
      },
      {
        "slug": "rpl9",
        "symbol": "RPL9",
        "hgnc": "HGNC:10369",
        "name": "ribosomal protein L9",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rpl9"
      },
      {
        "slug": "rps10",
        "symbol": "RPS10",
        "hgnc": "HGNC:10383",
        "name": "ribosomal protein S10",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rps10"
      },
      {
        "slug": "rps15a",
        "symbol": "RPS15A",
        "hgnc": "HGNC:10389",
        "name": "ribosomal protein S15a",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rps15a"
      },
      {
        "slug": "rps17",
        "symbol": "RPS17",
        "hgnc": "HGNC:10397",
        "name": "ribosomal protein S17",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rps17"
      },
      {
        "slug": "rps19",
        "symbol": "RPS19",
        "hgnc": "HGNC:10402",
        "name": "ribosomal protein S19",
        "frequency": "occasional",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/rps19"
      },
      {
        "slug": "rps20",
        "symbol": "RPS20",
        "hgnc": "HGNC:10405",
        "name": "ribosomal protein S20",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rps20"
      },
      {
        "slug": "rps24",
        "symbol": "RPS24",
        "hgnc": "HGNC:10411",
        "name": "ribosomal protein S24",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rps24"
      },
      {
        "slug": "rps26",
        "symbol": "RPS26",
        "hgnc": "HGNC:10414",
        "name": "ribosomal protein S26",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rps26"
      },
      {
        "slug": "rps27",
        "symbol": "RPS27",
        "hgnc": "HGNC:10416",
        "name": "ribosomal protein S27",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rps27"
      },
      {
        "slug": "rps28",
        "symbol": "RPS28",
        "hgnc": "HGNC:10418",
        "name": "ribosomal protein S28",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rps28"
      },
      {
        "slug": "rps29",
        "symbol": "RPS29",
        "hgnc": "HGNC:10419",
        "name": "ribosomal protein S29",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rps29"
      },
      {
        "slug": "rps7",
        "symbol": "RPS7",
        "hgnc": "HGNC:10440",
        "name": "ribosomal protein S7",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rps7"
      },
      {
        "slug": "sf3b4",
        "symbol": "SF3B4",
        "hgnc": "HGNC:10771",
        "name": "splicing factor 3b subunit 4",
        "frequency": "occasional",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/sf3b4"
      },
      {
        "slug": "shh",
        "symbol": "SHH",
        "hgnc": "HGNC:10848",
        "name": "sonic hedgehog signaling molecule",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/shh"
      },
      {
        "slug": "slx4",
        "symbol": "SLX4",
        "hgnc": "HGNC:23845",
        "name": "SLX4 structure-specific endonuclease subunit",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/slx4"
      },
      {
        "slug": "tsr2",
        "symbol": "TSR2",
        "hgnc": "HGNC:25455",
        "name": "TSR2 ribosome maturation factor",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tsr2"
      },
      {
        "slug": "twist1",
        "symbol": "TWIST1",
        "hgnc": "HGNC:12428",
        "name": "twist family bHLH transcription factor 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/twist1"
      },
      {
        "slug": "ube2t",
        "symbol": "UBE2T",
        "hgnc": "HGNC:25009",
        "name": "ubiquitin conjugating enzyme E2 T",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ube2t"
      },
      {
        "slug": "xrcc2",
        "symbol": "XRCC2",
        "hgnc": "HGNC:12829",
        "name": "X-ray repair cross complementing 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/xrcc2"
      },
      {
        "slug": "dlx5",
        "symbol": "DLX5",
        "hgnc": "HGNC:2918",
        "name": "distal-less homeobox 5",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/dlx5"
      },
      {
        "slug": "tp63",
        "symbol": "TP63",
        "hgnc": "HGNC:15979",
        "name": "tumor protein p63",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tp63"
      }
    ]
  }
}