{
  "url": "https://dantelabs.com/traits/renal-duplication",
  "trait": {
    "bundleId": "2026.10.17-8666dff2",
    "release": "2026-09-01",
    "slug": "renal-duplication",
    "id": "HP:0000075",
    "name": "Extra kidney",
    "label": "Renal duplication",
    "definition": "A congenital anomaly of the urinary tract, in which the kidney is duplicated and is drained via two separate renal pelves and ureters.",
    "synonyms": [
      "Duplex kidney",
      "Duplicated kidney"
    ],
    "systems": [
      {
        "slug": "abnormality-of-the-digestive-system",
        "name": "Abnormality of the digestive system",
        "url": "https://dantelabs.com/traits/abnormality-of-the-digestive-system"
      },
      {
        "slug": "abnormality-of-the-genitourinary-system",
        "name": "Abnormality of the genitourinary system",
        "url": "https://dantelabs.com/traits/abnormality-of-the-genitourinary-system"
      }
    ],
    "broader": [
      {
        "slug": "abdominal-organ-duplication",
        "name": "Abdominal organ duplication",
        "url": "https://dantelabs.com/traits/abdominal-organ-duplication"
      },
      {
        "slug": "abnormal-renal-morphology",
        "name": "Abnormally shaped kidney",
        "url": "https://dantelabs.com/traits/abnormal-renal-morphology"
      }
    ],
    "narrower": [
      {
        "slug": "duplication-of-renal-pelvis",
        "name": "Duplication of renal pelvis",
        "genes": 13,
        "url": "https://dantelabs.com/traits/duplication-of-renal-pelvis"
      },
      {
        "slug": "partially-duplicated-kidney",
        "name": "Partially duplicated kidney",
        "genes": 3,
        "url": "https://dantelabs.com/traits/partially-duplicated-kidney"
      }
    ],
    "genes": [
      {
        "slug": "dmrt2",
        "symbol": "DMRT2",
        "hgnc": "HGNC:2935",
        "name": "doublesex and mab-3 related transcription factor 2",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/dmrt2"
      },
      {
        "slug": "mau2",
        "symbol": "MAU2",
        "hgnc": "HGNC:29140",
        "name": "MAU2 sister chromatid cohesion factor",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mau2"
      },
      {
        "slug": "rnu2-2",
        "symbol": "RNU2-2",
        "hgnc": "HGNC:10152",
        "name": "RNA, U2 small nuclear 2",
        "frequency": "obligate",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rnu2-2"
      },
      {
        "slug": "itga6",
        "symbol": "ITGA6",
        "hgnc": "HGNC:6142",
        "name": "integrin subunit alpha 6",
        "frequency": "frequent",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/itga6"
      },
      {
        "slug": "itgb4",
        "symbol": "ITGB4",
        "hgnc": "HGNC:6158",
        "name": "integrin subunit beta 4",
        "frequency": "frequent",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/itgb4"
      },
      {
        "slug": "b3glct",
        "symbol": "B3GLCT",
        "hgnc": "HGNC:20207",
        "name": "beta 3-glucosyltransferase",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/b3glct"
      },
      {
        "slug": "baz1b",
        "symbol": "BAZ1B",
        "hgnc": "HGNC:961",
        "name": "bromodomain adjacent to zinc finger domain 1B",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/baz1b"
      },
      {
        "slug": "bud23",
        "symbol": "BUD23",
        "hgnc": "HGNC:16405",
        "name": "BUD23 rRNA methyltransferase and ribosome maturation factor",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/bud23"
      },
      {
        "slug": "clip2",
        "symbol": "CLIP2",
        "hgnc": "HGNC:2586",
        "name": "CAP-Gly domain containing linker protein 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/clip2"
      },
      {
        "slug": "col18a1",
        "symbol": "COL18A1",
        "hgnc": "HGNC:2195",
        "name": "collagen type XVIII alpha 1 chain",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/col18a1"
      },
      {
        "slug": "dnajc30",
        "symbol": "DNAJC30",
        "hgnc": "HGNC:16410",
        "name": "DnaJ heat shock protein family (Hsp40) member C30",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/dnajc30"
      },
      {
        "slug": "eif4h",
        "symbol": "EIF4H",
        "hgnc": "HGNC:12741",
        "name": "eukaryotic translation initiation factor 4H",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/eif4h"
      },
      {
        "slug": "eln",
        "symbol": "ELN",
        "hgnc": "HGNC:3327",
        "name": "elastin",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/eln"
      },
      {
        "slug": "fkbp6",
        "symbol": "FKBP6",
        "hgnc": "HGNC:3722",
        "name": "FKBP prolyl isomerase family member 6 (inactive)",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fkbp6"
      },
      {
        "slug": "foxc2",
        "symbol": "FOXC2",
        "hgnc": "HGNC:3801",
        "name": "forkhead box C2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/foxc2"
      },
      {
        "slug": "gtf2i",
        "symbol": "GTF2I",
        "hgnc": "HGNC:4659",
        "name": "general transcription factor IIi",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gtf2i"
      },
      {
        "slug": "gtf2ird1",
        "symbol": "GTF2IRD1",
        "hgnc": "HGNC:4661",
        "name": "GTF2I repeat domain containing 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gtf2ird1"
      },
      {
        "slug": "gtf2ird2",
        "symbol": "GTF2IRD2",
        "hgnc": "HGNC:30775",
        "name": "GTF2I repeat domain containing 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/gtf2ird2"
      },
      {
        "slug": "kdm6a",
        "symbol": "KDM6A",
        "hgnc": "HGNC:12637",
        "name": "lysine demethylase 6A",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kdm6a"
      },
      {
        "slug": "kmt2d",
        "symbol": "KMT2D",
        "hgnc": "HGNC:7133",
        "name": "lysine methyltransferase 2D",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/kmt2d"
      },
      {
        "slug": "limk1",
        "symbol": "LIMK1",
        "hgnc": "HGNC:6613",
        "name": "LIM domain kinase 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/limk1"
      },
      {
        "slug": "mettl27",
        "symbol": "METTL27",
        "hgnc": "HGNC:19068",
        "name": "methyltransferase like 27",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/mettl27"
      },
      {
        "slug": "ncf1",
        "symbol": "NCF1",
        "hgnc": "HGNC:7660",
        "name": "neutrophil cytosolic factor 1",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ncf1"
      },
      {
        "slug": "plec",
        "symbol": "PLEC",
        "hgnc": "HGNC:9069",
        "name": "plectin",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/plec"
      },
      {
        "slug": "rfc2",
        "symbol": "RFC2",
        "hgnc": "HGNC:9970",
        "name": "replication factor C subunit 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rfc2"
      },
      {
        "slug": "rps26",
        "symbol": "RPS26",
        "hgnc": "HGNC:10414",
        "name": "ribosomal protein S26",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/rps26"
      },
      {
        "slug": "stx1a",
        "symbol": "STX1A",
        "hgnc": "HGNC:11433",
        "name": "syntaxin 1A",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/stx1a"
      },
      {
        "slug": "tbl2",
        "symbol": "TBL2",
        "hgnc": "HGNC:11586",
        "name": "transducin beta like 2",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tbl2"
      },
      {
        "slug": "tmem270",
        "symbol": "TMEM270",
        "hgnc": "HGNC:23018",
        "name": "transmembrane protein 270",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/tmem270"
      },
      {
        "slug": "vps37d",
        "symbol": "VPS37D",
        "hgnc": "HGNC:18287",
        "name": "VPS37D subunit of ESCRT-I",
        "frequency": "occasional",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/vps37d"
      },
      {
        "slug": "zeb2",
        "symbol": "ZEB2",
        "hgnc": "HGNC:14881",
        "name": "zinc finger E-box binding homeobox 2",
        "frequency": "occasional",
        "diseases": 2,
        "url": "https://dantelabs.com/genes/zeb2"
      },
      {
        "slug": "fancd2",
        "symbol": "FANCD2",
        "hgnc": "HGNC:3585",
        "name": "FA complementation group D2",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/fancd2"
      },
      {
        "slug": "spint2",
        "symbol": "SPINT2",
        "hgnc": "HGNC:11247",
        "name": "serine peptidase inhibitor, Kunitz type 2",
        "frequency": "very-rare",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/spint2"
      },
      {
        "slug": "dvl1",
        "symbol": "DVL1",
        "hgnc": "HGNC:3084",
        "name": "dishevelled segment polarity protein 1",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/dvl1"
      },
      {
        "slug": "ror2",
        "symbol": "ROR2",
        "hgnc": "HGNC:10257",
        "name": "ROR family WNT receptor 2",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/ror2"
      },
      {
        "slug": "wnt5a",
        "symbol": "WNT5A",
        "hgnc": "HGNC:12784",
        "name": "Wnt family member 5A",
        "diseases": 1,
        "url": "https://dantelabs.com/genes/wnt5a"
      }
    ]
  }
}