{
  "url": "https://dantelabs.com/traits/ventricular-preexcitation",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "ventricular-preexcitation",
    "id": "HP:0004309",
    "name": "Ventricular preexcitation",
    "definition": "An abnormality in which the cardiac ventricles depolarize too early as a result of an abnormality of cardiac conduction pathways such as an accessory pathway.",
    "synonyms": [
      "Pre-excitation syndrome",
      "Preexcitation",
      "Ventricular pre-excitation"
    ],
    "systems": [
      {
        "slug": "abnormality-of-the-cardiovascular-system",
        "name": "Abnormality of the cardiovascular system",
        "url": "https://dantelabs.com/traits/abnormality-of-the-cardiovascular-system"
      }
    ],
    "broader": [
      {
        "slug": "ventricular-arrhythmia",
        "name": "Ventricular arrhythmia",
        "url": "https://dantelabs.com/traits/ventricular-arrhythmia"
      }
    ],
    "narrower": [
      {
        "slug": "wolff-parkinson-white-syndrome",
        "name": "Wolff-Parkinson-White syndrome",
        "genes": 37,
        "url": "https://dantelabs.com/traits/wolff-parkinson-white-syndrome"
      },
      {
        "slug": "ventricular-preexcitation-with-multiple-accessory-pathways",
        "name": "Ventricular preexcitation with multiple accessory pathways",
        "genes": 1,
        "url": "https://dantelabs.com/traits/ventricular-preexcitation-with-multiple-accessory-pathways"
      }
    ],
    "genes": [
      {
        "slug": "prkag2",
        "symbol": "PRKAG2",
        "hgnc": "HGNC:9386",
        "name": "protein kinase AMP-activated non-catalytic subunit gamma 2",
        "frequency": "obligate",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/prkag2"
      },
      {
        "slug": "dnajc30",
        "symbol": "DNAJC30",
        "hgnc": "HGNC:16410",
        "name": "DnaJ heat shock protein family (Hsp40) member C30",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/dnajc30"
      },
      {
        "slug": "mt-atp6",
        "symbol": "MT-ATP6",
        "hgnc": "HGNC:7414",
        "name": "mitochondrially encoded ATP synthase membrane subunit 6",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mt-atp6"
      },
      {
        "slug": "mt-co1",
        "symbol": "MT-CO1",
        "hgnc": "HGNC:7419",
        "name": "mitochondrially encoded cytochrome c oxidase I",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mt-co1"
      },
      {
        "slug": "mt-co3",
        "symbol": "MT-CO3",
        "hgnc": "HGNC:7422",
        "name": "mitochondrially encoded cytochrome c oxidase III",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mt-co3"
      },
      {
        "slug": "mt-cyb",
        "symbol": "MT-CYB",
        "hgnc": "HGNC:7427",
        "name": "mitochondrially encoded cytochrome b",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mt-cyb"
      },
      {
        "slug": "mt-nd1",
        "symbol": "MT-ND1",
        "hgnc": "HGNC:7455",
        "name": "mitochondrially encoded NADH:ubiquinone oxidoreductase core subunit 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mt-nd1"
      },
      {
        "slug": "mt-nd2",
        "symbol": "MT-ND2",
        "hgnc": "HGNC:7456",
        "name": "mitochondrially encoded NADH:ubiquinone oxidoreductase core subunit 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mt-nd2"
      },
      {
        "slug": "mt-nd4",
        "symbol": "MT-ND4",
        "hgnc": "HGNC:7459",
        "name": "mitochondrially encoded NADH:ubiquinone oxidoreductase core subunit 4",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mt-nd4"
      },
      {
        "slug": "mt-nd4l",
        "symbol": "MT-ND4L",
        "hgnc": "HGNC:7460",
        "name": "mitochondrially encoded NADH:ubiquinone oxidoreductase core subunit 4L",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mt-nd4l"
      },
      {
        "slug": "mt-nd5",
        "symbol": "MT-ND5",
        "hgnc": "HGNC:7461",
        "name": "mitochondrially encoded NADH:ubiquinone oxidoreductase core subunit 5",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mt-nd5"
      },
      {
        "slug": "mt-nd6",
        "symbol": "MT-ND6",
        "hgnc": "HGNC:7462",
        "name": "mitochondrially encoded NADH:ubiquinone oxidoreductase core subunit 6",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mt-nd6"
      },
      {
        "slug": "ndufs2",
        "symbol": "NDUFS2",
        "hgnc": "HGNC:7708",
        "name": "NADH:ubiquinone oxidoreductase core subunit S2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ndufs2"
      }
    ]
  }
}