{
  "url": "https://dantelabs.com/traits/undetectable-pattern-electroretinogram",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "undetectable-pattern-electroretinogram",
    "id": "HP:0030844",
    "name": "Undetectable pattern electroretinogram",
    "definition": "Absent response to a pattern electroretinogram (PERG).",
    "synonyms": [],
    "systems": [
      {
        "slug": "abnormality-of-the-eye",
        "name": "Abnormality of the eye",
        "url": "https://dantelabs.com/traits/abnormality-of-the-eye"
      }
    ],
    "broader": [
      {
        "slug": "abnormal-pattern-electroretinogram",
        "name": "Abnormal pattern electroretinogram",
        "url": "https://dantelabs.com/traits/abnormal-pattern-electroretinogram"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "ttll5",
        "symbol": "TTLL5",
        "hgnc": "HGNC:19963",
        "name": "tubulin tyrosine ligase like 5",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ttll5"
      },
      {
        "slug": "tlcd3b",
        "symbol": "TLCD3B",
        "hgnc": "HGNC:25295",
        "name": "TLC domain containing 3B",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tlcd3b"
      }
    ]
  }
}