{
  "url": "https://dantelabs.com/traits/sigmoid-kidney",
  "trait": {
    "bundleId": "2026.10.19-9814e911",
    "release": "2026-09-01",
    "slug": "sigmoid-kidney",
    "id": "HP:0034231",
    "name": "Sigmoid kidney",
    "definition": "A type of cross fused renal ectopia where the normal side kidney is present superiorly and the direction of pelvic is medial, the kidney which crosses positioned inferiorly with direction of pelvic toward the lateral side. As kidneys fuse after complete rotation on the vertical axis, both renal pelves lie in correct orientation.",
    "synonyms": [
      "S-shaped kidney",
      "Type B cross fused renal ectopia"
    ],
    "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": "crossed-fused-renal-ectopia",
        "name": "Crossed fused renal ectopia",
        "url": "https://dantelabs.com/traits/crossed-fused-renal-ectopia"
      }
    ],
    "narrower": [],
    "genes": [
      {
        "slug": "mnx1",
        "symbol": "MNX1",
        "hgnc": "HGNC:4979",
        "name": "motor neuron and pancreas homeobox 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mnx1"
      }
    ]
  }
}