Trait
Extra kidney
Clinical name: Renal duplication
A congenital anomaly of the urinary tract, in which the kidney is duplicated and is drained via two separate renal pelves and ureters.
Summary
- Also called
- Duplex kidney, Duplicated kidney
Reference genomeGRCh38hg38
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Get my Genome Test36 genes linked to Extra kidney
Changes in these genes cause rare conditions in which Extra kidney is seen. Most people with this trait have none of those conditions, and a gene on this list says nothing about anyone's own genome.
| Gene | How often it is seen | Conditions |
|---|---|---|
| DMRT2doublesex and mab-3 related transcription factor 2 | Always | In 1 condition |
| MAU2MAU2 sister chromatid cohesion factor | Always | In 1 condition |
| RNU2-2RNA, U2 small nuclear 2 | Always | In 1 condition |
| ITGA6integrin subunit alpha 6 | Often (30–79%) | In 1 condition |
| ITGB4integrin subunit beta 4 | Often (30–79%) | In 2 conditions |
| B3GLCTbeta 3-glucosyltransferase | Sometimes (5–29%) | In 1 condition |
| BAZ1Bbromodomain adjacent to zinc finger domain 1B | Sometimes (5–29%) | In 1 condition |
| BUD23BUD23 rRNA methyltransferase and ribosome maturation factor | Sometimes (5–29%) | In 1 condition |
| CLIP2CAP-Gly domain containing linker protein 2 | Sometimes (5–29%) | In 1 condition |
| COL18A1collagen type XVIII alpha 1 chain | Sometimes (5–29%) | In 1 condition |
| DNAJC30DnaJ heat shock protein family (Hsp40) member C30 | Sometimes (5–29%) | In 1 condition |
| EIF4Heukaryotic translation initiation factor 4H | Sometimes (5–29%) | In 1 condition |
| ELNelastin | Sometimes (5–29%) | In 1 condition |
| FKBP6FKBP prolyl isomerase family member 6 (inactive) | Sometimes (5–29%) | In 1 condition |
| FOXC2forkhead box C2 | Sometimes (5–29%) | In 1 condition |
| GTF2Igeneral transcription factor IIi | Sometimes (5–29%) | In 1 condition |
| GTF2IRD1GTF2I repeat domain containing 1 | Sometimes (5–29%) | In 1 condition |
| GTF2IRD2GTF2I repeat domain containing 2 | Sometimes (5–29%) | In 1 condition |
| KDM6Alysine demethylase 6A | Sometimes (5–29%) | In 1 condition |
| KMT2Dlysine methyltransferase 2D | Sometimes (5–29%) | In 1 condition |
| LIMK1LIM domain kinase 1 | Sometimes (5–29%) | In 1 condition |
| METTL27methyltransferase like 27 | Sometimes (5–29%) | In 1 condition |
| NCF1neutrophil cytosolic factor 1 | Sometimes (5–29%) | In 1 condition |
| PLECplectin | Sometimes (5–29%) | In 1 condition |
| RFC2replication factor C subunit 2 | Sometimes (5–29%) | In 1 condition |
| RPS26ribosomal protein S26 | Sometimes (5–29%) | In 1 condition |
| STX1Asyntaxin 1A | Sometimes (5–29%) | In 1 condition |
| TBL2transducin beta like 2 | Sometimes (5–29%) | In 1 condition |
| TMEM270transmembrane protein 270 | Sometimes (5–29%) | In 1 condition |
| VPS37DVPS37D subunit of ESCRT-I | Sometimes (5–29%) | In 1 condition |
| ZEB2zinc finger E-box binding homeobox 2 | Sometimes (5–29%) | In 2 conditions |
| FANCD2FA complementation group D2 | Rarely (1–4%) | In 1 condition |
| SPINT2serine peptidase inhibitor, Kunitz type 2 | Rarely (1–4%) | In 1 condition |
| DVL1dishevelled segment polarity protein 1 | Not recorded | In 1 condition |
| ROR2ROR family WNT receptor 2 | Not recorded | In 1 condition |
| WNT5AWnt family member 5A | Not recorded | In 1 condition |
How often is among people with one of the gene's conditions, the most often across them, as the Human Phenotype Ontology records it. These pages describe traits and the research behind them; they are not a diagnosis, and a doctor or genetic counsellor is the person to ask about symptoms.
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Where this comes from
- The Human Phenotype Ontology, release 2026-09-01: the trait, its names, its definition and the genes linked to it. Find out more at hpo.jax.org.
- Data release 2026.10.16-c6eea6bf.
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