{
  "url": "https://dantelabs.com/traits/anonychia",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "anonychia",
    "id": "HP:0001798",
    "name": "Absent nails",
    "label": "Anonychia",
    "definition": "Aplasia of the nail.",
    "synonyms": [
      "Aplastic nails"
    ],
    "systems": [
      {
        "slug": "abnormality-of-the-integument",
        "name": "Abnormality of the integument",
        "url": "https://dantelabs.com/traits/abnormality-of-the-integument"
      }
    ],
    "broader": [
      {
        "slug": "aplasia-hypoplasia-of-the-nails",
        "name": "Absent/small nails",
        "url": "https://dantelabs.com/traits/aplasia-hypoplasia-of-the-nails"
      }
    ],
    "narrower": [
      {
        "slug": "absent-fingernail",
        "name": "Absent fingernail",
        "genes": 21,
        "url": "https://dantelabs.com/traits/absent-fingernail"
      },
      {
        "slug": "absent-toenail",
        "name": "Absent toenail",
        "genes": 18,
        "url": "https://dantelabs.com/traits/absent-toenail"
      }
    ],
    "genes": [
      {
        "slug": "atp6v1b2",
        "symbol": "ATP6V1B2",
        "hgnc": "HGNC:854",
        "name": "ATPase H+ transporting V1 subunit B2",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/atp6v1b2"
      },
      {
        "slug": "dsp",
        "symbol": "DSP",
        "hgnc": "HGNC:3052",
        "name": "desmoplakin",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/dsp"
      },
      {
        "slug": "hoxa13",
        "symbol": "HOXA13",
        "hgnc": "HGNC:5102",
        "name": "homeobox A13",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/hoxa13"
      },
      {
        "slug": "rbbp8",
        "symbol": "RBBP8",
        "hgnc": "HGNC:9891",
        "name": "RB binding protein 8, endonuclease",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rbbp8"
      },
      {
        "slug": "rspo4",
        "symbol": "RSPO4",
        "hgnc": "HGNC:16175",
        "name": "R-spondin 4",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rspo4"
      },
      {
        "slug": "lrp4",
        "symbol": "LRP4",
        "hgnc": "HGNC:6696",
        "name": "LDL receptor related protein 4",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/lrp4"
      },
      {
        "slug": "col17a1",
        "symbol": "COL17A1",
        "hgnc": "HGNC:2194",
        "name": "collagen type XVII alpha 1 chain",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/col17a1"
      },
      {
        "slug": "col7a1",
        "symbol": "COL7A1",
        "hgnc": "HGNC:2214",
        "name": "collagen type VII alpha 1 chain",
        "frequency": "frequent",
        "diseases": 5,
        "url": "https://dantelabs.com/genes/col7a1"
      },
      {
        "slug": "fig4",
        "symbol": "FIG4",
        "hgnc": "HGNC:16873",
        "name": "FIG4 phosphoinositide 5-phosphatase",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fig4"
      },
      {
        "slug": "itgb4",
        "symbol": "ITGB4",
        "hgnc": "HGNC:6158",
        "name": "integrin subunit beta 4",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/itgb4"
      },
      {
        "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": "lama3",
        "symbol": "LAMA3",
        "hgnc": "HGNC:6483",
        "name": "laminin subunit alpha 3",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/lama3"
      },
      {
        "slug": "lamb3",
        "symbol": "LAMB3",
        "hgnc": "HGNC:6490",
        "name": "laminin subunit beta 3",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/lamb3"
      },
      {
        "slug": "lamc2",
        "symbol": "LAMC2",
        "hgnc": "HGNC:6493",
        "name": "laminin subunit gamma 2",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/lamc2"
      },
      {
        "slug": "mmp1",
        "symbol": "MMP1",
        "hgnc": "HGNC:7155",
        "name": "matrix metallopeptidase 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mmp1"
      },
      {
        "slug": "zbtb20",
        "symbol": "ZBTB20",
        "hgnc": "HGNC:13503",
        "name": "zinc finger and BTB domain containing 20",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/zbtb20"
      },
      {
        "slug": "actg2",
        "symbol": "ACTG2",
        "hgnc": "HGNC:145",
        "name": "actin gamma 2, smooth muscle",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/actg2"
      },
      {
        "slug": "atp2a2",
        "symbol": "ATP2A2",
        "hgnc": "HGNC:812",
        "name": "ATPase sarcoplasmic/endoplasmic reticulum Ca2+ transporting 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/atp2a2"
      },
      {
        "slug": "gjb6",
        "symbol": "GJB6",
        "hgnc": "HGNC:4288",
        "name": "gap junction protein beta 6",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gjb6"
      },
      {
        "slug": "porcn",
        "symbol": "PORCN",
        "hgnc": "HGNC:17652",
        "name": "porcupine O-acyltransferase",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/porcn"
      },
      {
        "slug": "slc25a24",
        "symbol": "SLC25A24",
        "hgnc": "HGNC:20662",
        "name": "solute carrier family 25 member 24",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/slc25a24"
      },
      {
        "slug": "arid1b",
        "symbol": "ARID1B",
        "hgnc": "HGNC:18040",
        "name": "AT-rich interaction domain 1B",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/arid1b"
      },
      {
        "slug": "grhl2",
        "symbol": "GRHL2",
        "hgnc": "HGNC:2799",
        "name": "grainyhead like transcription factor 2",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/grhl2"
      },
      {
        "slug": "itga6",
        "symbol": "ITGA6",
        "hgnc": "HGNC:6142",
        "name": "integrin subunit alpha 6",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/itga6"
      },
      {
        "slug": "lmx1b",
        "symbol": "LMX1B",
        "hgnc": "HGNC:6654",
        "name": "LIM homeobox transcription factor 1 beta",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/lmx1b"
      },
      {
        "slug": "nog",
        "symbol": "NOG",
        "hgnc": "HGNC:7866",
        "name": "noggin",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/nog"
      },
      {
        "slug": "plec",
        "symbol": "PLEC",
        "hgnc": "HGNC:9069",
        "name": "plectin",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/plec"
      },
      {
        "slug": "ripk4",
        "symbol": "RIPK4",
        "hgnc": "HGNC:496",
        "name": "receptor interacting serine/threonine kinase 4",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ripk4"
      },
      {
        "slug": "ror2",
        "symbol": "ROR2",
        "hgnc": "HGNC:10257",
        "name": "ROR family WNT receptor 2",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ror2"
      },
      {
        "slug": "tbc1d24",
        "symbol": "TBC1D24",
        "hgnc": "HGNC:29203",
        "name": "TBC1 domain family member 24",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tbc1d24"
      },
      {
        "slug": "tp63",
        "symbol": "TP63",
        "hgnc": "HGNC:15979",
        "name": "tumor protein p63",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tp63"
      },
      {
        "slug": "wnt10a",
        "symbol": "WNT10A",
        "hgnc": "HGNC:13829",
        "name": "Wnt family member 10A",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/wnt10a"
      },
      {
        "slug": "wnt7a",
        "symbol": "WNT7A",
        "hgnc": "HGNC:12786",
        "name": "Wnt family member 7A",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/wnt7a"
      }
    ]
  }
}