{
  "url": "https://dantelabs.com/traits/postterm-pregnancy",
  "trait": {
    "bundleId": "2026.10.16-c6eea6bf",
    "release": "2026-09-01",
    "slug": "postterm-pregnancy",
    "id": "HP:0031169",
    "name": "Postterm pregnancy",
    "definition": "A pregnancy that extends to 42 weeks of gestation or beyond.",
    "synonyms": [],
    "systems": [
      {
        "slug": "abnormality-of-prenatal-development-or-birth",
        "name": "Abnormality of prenatal development or birth",
        "url": "https://dantelabs.com/traits/abnormality-of-prenatal-development-or-birth"
      }
    ],
    "broader": [
      {
        "slug": "abnormality-of-prenatal-development-or-birth",
        "name": "Abnormality of prenatal development or birth",
        "url": "https://dantelabs.com/traits/abnormality-of-prenatal-development-or-birth"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "magel2",
        "symbol": "MAGEL2",
        "hgnc": "HGNC:6814",
        "name": "MAGE family member L2",
        "frequency": "frequent",
        "diseases": 3,
        "url": "https://dantelabs.com/genes/magel2"
      },
      {
        "slug": "ndn",
        "symbol": "NDN",
        "hgnc": "HGNC:7675",
        "name": "necdin, MAGE family member",
        "frequency": "frequent",
        "diseases": 3,
        "url": "https://dantelabs.com/genes/ndn"
      },
      {
        "slug": "oca2",
        "symbol": "OCA2",
        "hgnc": "HGNC:8101",
        "name": "OCA2 melanosomal transmembrane protein",
        "frequency": "frequent",
        "diseases": 3,
        "url": "https://dantelabs.com/genes/oca2"
      },
      {
        "slug": "snrpn",
        "symbol": "SNRPN",
        "hgnc": "HGNC:11164",
        "name": "small nuclear ribonucleoprotein polypeptide N",
        "frequency": "frequent",
        "diseases": 3,
        "url": "https://dantelabs.com/genes/snrpn"
      },
      {
        "slug": "duox2",
        "symbol": "DUOX2",
        "hgnc": "HGNC:13273",
        "name": "dual oxidase 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/duox2"
      }
    ]
  }
}