{
  "url": "https://dantelabs.com/traits/early-chronotype",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "early-chronotype",
    "id": "HP:0031873",
    "name": "Early chronotype",
    "definition": "A tendency towards rising very early in the morning and going to bed early in the evening.",
    "synonyms": [
      "Advanced 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": "per3",
        "symbol": "PER3",
        "hgnc": "HGNC:8847",
        "name": "period circadian regulator 3",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/per3"
      },
      {
        "slug": "timeless",
        "symbol": "TIMELESS",
        "hgnc": "HGNC:11813",
        "name": "timeless circadian regulator",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/timeless"
      },
      {
        "slug": "csnk1d",
        "symbol": "CSNK1D",
        "hgnc": "HGNC:2452",
        "name": "casein kinase 1 delta",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/csnk1d"
      },
      {
        "slug": "per2",
        "symbol": "PER2",
        "hgnc": "HGNC:8846",
        "name": "period circadian regulator 2",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/per2"
      }
    ]
  }
}