{
  "url": "https://dantelabs.com/traits/nail-biting",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "nail-biting",
    "id": "HP:0012170",
    "name": "Nail-biting",
    "definition": "Habitual biting of one's own fingernails.",
    "synonyms": [
      "Onychophagia",
      "Onychophagy"
    ],
    "systems": [
      {
        "slug": "abnormality-of-the-nervous-system",
        "name": "Abnormality of the nervous system",
        "url": "https://dantelabs.com/traits/abnormality-of-the-nervous-system"
      }
    ],
    "broader": [
      {
        "slug": "compulsive-behaviors",
        "name": "Obsessive compulsive behavior",
        "url": "https://dantelabs.com/traits/compulsive-behaviors"
      },
      {
        "slug": "self-biting",
        "name": "Self-biting",
        "url": "https://dantelabs.com/traits/self-biting"
      }
    ],
    "narrower": [
      {
        "slug": "onychotillomania",
        "name": "Onychotillomania",
        "genes": 1,
        "url": "https://dantelabs.com/traits/onychotillomania"
      }
    ],
    "genes": [
      {
        "slug": "kics2",
        "symbol": "KICS2",
        "hgnc": "HGNC:26517",
        "name": "KICSTOR subunit 2",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kics2"
      },
      {
        "slug": "ntrk1",
        "symbol": "NTRK1",
        "hgnc": "HGNC:8031",
        "name": "neurotrophic receptor tyrosine kinase 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ntrk1"
      },
      {
        "slug": "pidd1",
        "symbol": "PIDD1",
        "hgnc": "HGNC:16491",
        "name": "p53-induced death domain protein 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pidd1"
      },
      {
        "slug": "rfx7",
        "symbol": "RFX7",
        "hgnc": "HGNC:25777",
        "name": "regulatory factor X7",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rfx7"
      }
    ]
  }
}