{
  "url": "https://dantelabs.com/traits/late-chronotype",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "late-chronotype",
    "id": "HP:0031874",
    "name": "Late chronotype",
    "definition": "A tendency towards waking up very late in the morning and staying up late at night.",
    "synonyms": [
      "Delayed sleep onset"
    ],
    "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": "sleep-wake-cycle-disturbance",
        "name": "Sleep-wake cycle disturbance",
        "url": "https://dantelabs.com/traits/sleep-wake-cycle-disturbance"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "chd8",
        "symbol": "CHD8",
        "hgnc": "HGNC:20153",
        "name": "chromodomain helicase DNA binding protein 8",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/chd8"
      }
    ]
  }
}