{
  "url": "https://dantelabs.com/traits/absent-thumbnail",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "absent-thumbnail",
    "id": "HP:0012554",
    "name": "Absent thumbnail",
    "definition": "Absence of thumb nail.",
    "synonyms": [],
    "systems": [
      {
        "slug": "abnormality-of-the-integument",
        "name": "Abnormality of the integument",
        "url": "https://dantelabs.com/traits/abnormality-of-the-integument"
      }
    ],
    "broader": [
      {
        "slug": "absent-fingernail",
        "name": "Absent fingernail",
        "url": "https://dantelabs.com/traits/absent-fingernail"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "atp6v1b2",
        "symbol": "ATP6V1B2",
        "hgnc": "HGNC:854",
        "name": "ATPase H+ transporting V1 subunit B2",
        "frequency": "obligate",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/atp6v1b2"
      },
      {
        "slug": "kcnh1",
        "symbol": "KCNH1",
        "hgnc": "HGNC:6250",
        "name": "potassium voltage-gated channel subfamily H member 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kcnh1"
      },
      {
        "slug": "arx",
        "symbol": "ARX",
        "hgnc": "HGNC:18060",
        "name": "aristaless related homeobox",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/arx"
      },
      {
        "slug": "cacna1e",
        "symbol": "CACNA1E",
        "hgnc": "HGNC:1392",
        "name": "calcium voltage-gated channel subunit alpha1 E",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cacna1e"
      },
      {
        "slug": "cask",
        "symbol": "CASK",
        "hgnc": "HGNC:1497",
        "name": "calcium/calmodulin dependent serine protein kinase",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cask"
      },
      {
        "slug": "cdkl5",
        "symbol": "CDKL5",
        "hgnc": "HGNC:11411",
        "name": "cyclin dependent kinase like 5",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/cdkl5"
      },
      {
        "slug": "dmxl2",
        "symbol": "DMXL2",
        "hgnc": "HGNC:2938",
        "name": "Dmx like 2",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/dmxl2"
      },
      {
        "slug": "gnao1",
        "symbol": "GNAO1",
        "hgnc": "HGNC:4389",
        "name": "G protein subunit alpha o1",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gnao1"
      },
      {
        "slug": "grin1",
        "symbol": "GRIN1",
        "hgnc": "HGNC:4584",
        "name": "glutamate ionotropic receptor NMDA type subunit 1",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/grin1"
      },
      {
        "slug": "grm7",
        "symbol": "GRM7",
        "hgnc": "HGNC:4599",
        "name": "glutamate metabotropic receptor 7",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/grm7"
      },
      {
        "slug": "kcna1",
        "symbol": "KCNA1",
        "hgnc": "HGNC:6218",
        "name": "potassium voltage-gated channel subfamily A member 1",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kcna1"
      },
      {
        "slug": "lgi1",
        "symbol": "LGI1",
        "hgnc": "HGNC:6572",
        "name": "leucine rich glioma inactivated 1",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/lgi1"
      },
      {
        "slug": "neurod2",
        "symbol": "NEUROD2",
        "hgnc": "HGNC:7763",
        "name": "neuronal differentiation 2",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/neurod2"
      },
      {
        "slug": "pigp",
        "symbol": "PIGP",
        "hgnc": "HGNC:3046",
        "name": "phosphatidylinositol glycan anchor biosynthesis class P",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pigp"
      },
      {
        "slug": "pigq",
        "symbol": "PIGQ",
        "hgnc": "HGNC:14135",
        "name": "phosphatidylinositol glycan anchor biosynthesis class Q",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pigq"
      },
      {
        "slug": "pnkp",
        "symbol": "PNKP",
        "hgnc": "HGNC:9154",
        "name": "polynucleotide kinase 3'-phosphatase",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pnkp"
      },
      {
        "slug": "rhobtb2",
        "symbol": "RHOBTB2",
        "hgnc": "HGNC:18756",
        "name": "Rho related BTB domain containing 2",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rhobtb2"
      },
      {
        "slug": "scn1b",
        "symbol": "SCN1B",
        "hgnc": "HGNC:10586",
        "name": "sodium voltage-gated channel beta subunit 1",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/scn1b"
      },
      {
        "slug": "scn2a",
        "symbol": "SCN2A",
        "hgnc": "HGNC:10588",
        "name": "sodium voltage-gated channel alpha subunit 2",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/scn2a"
      },
      {
        "slug": "sik1",
        "symbol": "SIK1",
        "hgnc": "HGNC:11142",
        "name": "salt inducible kinase 1",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sik1"
      },
      {
        "slug": "slc25a22",
        "symbol": "SLC25A22",
        "hgnc": "HGNC:19954",
        "name": "solute carrier family 25 member 22",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/slc25a22"
      },
      {
        "slug": "slc32a1",
        "symbol": "SLC32A1",
        "hgnc": "HGNC:11018",
        "name": "solute carrier family 32 member 1",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/slc32a1"
      },
      {
        "slug": "trim8",
        "symbol": "TRIM8",
        "hgnc": "HGNC:15579",
        "name": "tripartite motif containing 8",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/trim8"
      }
    ]
  }
}