{
  "url": "https://dantelabs.com/traits/xanthine-nephrolithiasis",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "xanthine-nephrolithiasis",
    "id": "HP:0000804",
    "name": "Xanthine nephrolithiasis",
    "definition": "The presence of xanthine-containing calculi (stones) in the kidneys.",
    "synonyms": [
      "Urinary xanthine stones",
      "Xanthine stones"
    ],
    "systems": [
      {
        "slug": "abnormality-of-the-genitourinary-system",
        "name": "Abnormality of the genitourinary system",
        "url": "https://dantelabs.com/traits/abnormality-of-the-genitourinary-system"
      }
    ],
    "broader": [
      {
        "slug": "kidney-stone",
        "name": "Kidney stone",
        "url": "https://dantelabs.com/traits/kidney-stone"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "mocs1",
        "symbol": "MOCS1",
        "hgnc": "HGNC:7190",
        "name": "molybdenum cofactor synthesis 1",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mocs1"
      },
      {
        "slug": "mocs2",
        "symbol": "MOCS2",
        "hgnc": "HGNC:7193",
        "name": "molybdenum cofactor synthesis 2",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mocs2"
      },
      {
        "slug": "xdh",
        "symbol": "XDH",
        "hgnc": "HGNC:12805",
        "name": "xanthine dehydrogenase",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/xdh"
      }
    ]
  }
}