{
  "url": "https://dantelabs.com/traits/ventricular-couplet",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "ventricular-couplet",
    "id": "HP:0034039",
    "name": "Ventricular couplet",
    "definition": "Two consecutive premature ventricular contractions (PVCs) with no intervening normal beats.",
    "synonyms": [
      "Doublet premature ventricular contractions"
    ],
    "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": "premature-ventricular-contraction",
        "name": "Extra heart beat",
        "url": "https://dantelabs.com/traits/premature-ventricular-contraction"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "casq2",
        "symbol": "CASQ2",
        "hgnc": "HGNC:1513",
        "name": "calsequestrin 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/casq2"
      },
      {
        "slug": "ryr2",
        "symbol": "RYR2",
        "hgnc": "HGNC:10484",
        "name": "ryanodine receptor 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ryr2"
      },
      {
        "slug": "trdn",
        "symbol": "TRDN",
        "hgnc": "HGNC:12261",
        "name": "triadin",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/trdn"
      }
    ]
  }
}