{
  "url": "https://dantelabs.com/traits/abnormal-saccadic-eye-movements",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "abnormal-saccadic-eye-movements",
    "id": "HP:0000570",
    "name": "Abnormal saccadic eye movements",
    "definition": "An abnormality of eye movement characterized by impairment of fast (saccadic) eye movements.",
    "synonyms": [
      "Abnormality of saccadic eye movements"
    ],
    "systems": [
      {
        "slug": "abnormality-of-the-eye",
        "name": "Abnormality of the eye",
        "url": "https://dantelabs.com/traits/abnormality-of-the-eye"
      }
    ],
    "broader": [
      {
        "slug": "abnormality-of-eye-movement",
        "name": "Abnormality of eye movement",
        "url": "https://dantelabs.com/traits/abnormality-of-eye-movement"
      }
    ],
    "narrower": [
      {
        "slug": "slow-saccadic-eye-movements",
        "name": "Slow eye movements",
        "genes": 42,
        "url": "https://dantelabs.com/traits/slow-saccadic-eye-movements"
      },
      {
        "slug": "hypometric-saccades",
        "name": "Hypometric saccades",
        "genes": 19,
        "url": "https://dantelabs.com/traits/hypometric-saccades"
      },
      {
        "slug": "dysmetric-saccades",
        "name": "Uncoordinated eye movement",
        "genes": 19,
        "url": "https://dantelabs.com/traits/dysmetric-saccades"
      },
      {
        "slug": "hypermetric-saccades",
        "name": "Hypermetric saccades",
        "genes": 12,
        "url": "https://dantelabs.com/traits/hypermetric-saccades"
      },
      {
        "slug": "saccadic-intrusion",
        "name": "Saccadic intrusion",
        "genes": 0,
        "url": "https://dantelabs.com/traits/saccadic-intrusion"
      },
      {
        "slug": "saccadic-oscillation",
        "name": "Saccadic oscillation",
        "genes": 0,
        "url": "https://dantelabs.com/traits/saccadic-oscillation"
      }
    ],
    "genes": [
      {
        "slug": "mau2",
        "symbol": "MAU2",
        "hgnc": "HGNC:29140",
        "name": "MAU2 sister chromatid cohesion factor",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mau2"
      },
      {
        "slug": "mapt",
        "symbol": "MAPT",
        "hgnc": "HGNC:6893",
        "name": "microtubule associated protein tau",
        "frequency": "very-frequent",
        "diseases": 3,
        "url": "https://dantelabs.com/genes/mapt"
      },
      {
        "slug": "dagla",
        "symbol": "DAGLA",
        "hgnc": "HGNC:1165",
        "name": "diacylglycerol lipase alpha",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/dagla"
      },
      {
        "slug": "fxn",
        "symbol": "FXN",
        "hgnc": "HGNC:3951",
        "name": "frataxin",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fxn"
      },
      {
        "slug": "gba2",
        "symbol": "GBA2",
        "hgnc": "HGNC:18986",
        "name": "glucosylceramidase beta 2",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gba2"
      },
      {
        "slug": "itpr1",
        "symbol": "ITPR1",
        "hgnc": "HGNC:6180",
        "name": "inositol 1,4,5-trisphosphate receptor type 1",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/itpr1"
      },
      {
        "slug": "kif1a",
        "symbol": "KIF1A",
        "hgnc": "HGNC:888",
        "name": "kinesin family member 1A",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kif1a"
      },
      {
        "slug": "vps13d",
        "symbol": "VPS13D",
        "hgnc": "HGNC:23595",
        "name": "vacuolar protein sorting 13 homolog D",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/vps13d"
      },
      {
        "slug": "vps41",
        "symbol": "VPS41",
        "hgnc": "HGNC:12713",
        "name": "VPS41 subunit of HOPS complex",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/vps41"
      },
      {
        "slug": "pnkp",
        "symbol": "PNKP",
        "hgnc": "HGNC:9154",
        "name": "polynucleotide kinase 3'-phosphatase",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/pnkp"
      },
      {
        "slug": "prnp",
        "symbol": "PRNP",
        "hgnc": "HGNC:9449",
        "name": "prion protein (Kanno blood group)",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/prnp"
      },
      {
        "slug": "sox3",
        "symbol": "SOX3",
        "hgnc": "HGNC:11199",
        "name": "SRY-box transcription factor 3",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/sox3"
      },
      {
        "slug": "syne1",
        "symbol": "SYNE1",
        "hgnc": "HGNC:17089",
        "name": "spectrin repeat containing nuclear envelope protein 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/syne1"
      },
      {
        "slug": "tubb3",
        "symbol": "TUBB3",
        "hgnc": "HGNC:20772",
        "name": "tubulin beta 3 class III",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tubb3"
      },
      {
        "slug": "gba1",
        "symbol": "GBA1",
        "hgnc": "HGNC:4177",
        "name": "glucosylceramidase beta 1",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gba1"
      },
      {
        "slug": "inpp5e",
        "symbol": "INPP5E",
        "hgnc": "HGNC:21474",
        "name": "inositol polyphosphate-5-phosphatase E",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/inpp5e"
      },
      {
        "slug": "tmem216",
        "symbol": "TMEM216",
        "hgnc": "HGNC:25018",
        "name": "transmembrane protein 216",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tmem216"
      }
    ]
  }
}