{
  "url": "https://dantelabs.com/traits/normal-interictal-eeg",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "normal-interictal-eeg",
    "id": "HP:0002372",
    "name": "Normal interictal EEG",
    "definition": "Lack of observable abnormal electroencephalographic (EEG) patterns in an individual with a history of seizures. About half of individuals with epilepsy show interictal epileptiform discharges upon the first investigation. The yield can be increased by repeated studies, sleep studies, or by ambulatory EEG recordings over 24 hours. Normal interictal EEG is a sign that can be useful in the differential diagnosis.",
    "synonyms": [],
    "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": "interictal-eeg-abnormality",
        "name": "Interictal EEG abnormality",
        "url": "https://dantelabs.com/traits/interictal-eeg-abnormality"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "kcnq2",
        "symbol": "KCNQ2",
        "hgnc": "HGNC:6296",
        "name": "potassium voltage-gated channel subfamily Q member 2",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kcnq2"
      },
      {
        "slug": "kcnq3",
        "symbol": "KCNQ3",
        "hgnc": "HGNC:6297",
        "name": "potassium voltage-gated channel subfamily Q member 3",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kcnq3"
      },
      {
        "slug": "prrt2",
        "symbol": "PRRT2",
        "hgnc": "HGNC:30500",
        "name": "proline rich transmembrane protein 2",
        "frequency": "very-frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/prrt2"
      },
      {
        "slug": "scn2a",
        "symbol": "SCN2A",
        "hgnc": "HGNC:10588",
        "name": "sodium voltage-gated channel alpha subunit 2",
        "frequency": "very-frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/scn2a"
      },
      {
        "slug": "scn8a",
        "symbol": "SCN8A",
        "hgnc": "HGNC:10596",
        "name": "sodium voltage-gated channel alpha subunit 8",
        "frequency": "very-frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/scn8a"
      }
    ]
  }
}