Trait
Extra toe attached near the little toe
Clinical name: Postaxial foot polydactyly
Polydactyly of the foot most commonly refers to the presence of six toes on one foot. Postaxial polydactyly affects the lateral ray and the duplication may range from a well-formed articulated digit to a rudimentary digit.
Summary
- Also called
- Polydactyly affecting the 5th toe, Postaxial polydactyly of feet, Postaxial polydactyly of foot, Posterior polydactyly of foot
Reference genomeGRCh38hg38
Positions on gene and variant pages follow this choice, in this browser.
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Get my Genome Test72 genes linked to Extra toe attached near the little toe
Changes in these genes cause rare conditions in which Extra toe attached near the little toe 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 |
|---|---|---|
| ARL6ARF like GTPase 6 | Always | In 1 condition |
| B9D2B9 domain containing 2 | Always | In 2 conditions |
| BBS1Bardet-Biedl syndrome 1 | Always | In 1 condition |
| BBS9Bardet-Biedl syndrome 9 | Always | In 1 condition |
| CC2D2Acoiled-coil and C2 domain containing 2A | Always | In 2 conditions |
| CCDC28Bcoiled-coil domain containing 28B | Always | In 1 condition |
| GLI2GLI family zinc finger 2 | Always | In 1 condition |
| GLI3GLI family zinc finger 3 | Always | In 4 conditions |
| IFT27intraflagellar transport 27 | Always | In 1 condition |
| IFT74intraflagellar transport 74 | Always | In 1 condition |
| IQCEIQ motif containing E | Always | In 1 condition |
| KDM2Blysine demethylase 2B | Always | In 1 condition |
| LZTFL1leucine zipper transcription factor like 1 | Always | In 1 condition |
| MAXMYC associated transcriptional regulator X | Always | In 1 condition |
| MKS1MKS transition zone complex subunit 1 | Always | In 2 conditions |
| PDE6Dphosphodiesterase 6D | Always | In 1 condition |
| SCNM1sodium channel modifier 1 | Always | In 1 condition |
| SMOsmoothened, frizzled class receptor | Always | In 1 condition |
| TCTN2tectonic family member 2 | Always | In 2 conditions |
| TMEM107transmembrane protein 107 | Always | In 2 conditions |
| TXNDC15thioredoxin domain containing 15 | Always | In 2 conditions |
| ZNF141zinc finger protein 141 | Always | In 1 condition |
| B9D1B9 domain containing 1 | Very often (80–99%) | In 1 condition |
| BBS2Bardet-Biedl syndrome 2 | Very often (80–99%) | In 1 condition |
| CEP290centrosomal protein 290 | Very often (80–99%) | In 1 condition |
| CSPP1centrosome and spindle pole associated protein 1 | Very often (80–99%) | In 1 condition |
| DDX59DEAD-box helicase 59 | Very often (80–99%) | In 2 conditions |
| KIF7kinesin family member 7 | Very often (80–99%) | In 2 conditions |
| RPGRIP1RPGR interacting protein 1 | Very often (80–99%) | In 1 condition |
| RPGRIP1LRPGRIP1 like | Very often (80–99%) | In 2 conditions |
| SC5Dsterol-C5-desaturase | Very often (80–99%) | In 2 conditions |
| TCTN1tectonic family member 1 | Very often (80–99%) | In 1 condition |
| TCTN3tectonic family member 3 | Very often (80–99%) | In 1 condition |
| TMEM216transmembrane protein 216 | Very often (80–99%) | In 2 conditions |
| TMEM231transmembrane protein 231 | Very often (80–99%) | In 1 condition |
| TMEM237transmembrane protein 237 | Very often (80–99%) | In 1 condition |
| TMEM67transmembrane protein 67 | Very often (80–99%) | In 2 conditions |
| BBS12Bardet-Biedl syndrome 12 | Often (30–79%) | In 1 condition |
| C2CD3C2 domain containing 3 centriole elongation regulator | Often (30–79%) | In 1 condition |
| CIBAR1CBY1 interacting BAR domain containing 1 | Often (30–79%) | In 1 condition |
Show 32 more genes
| Gene | How often it is seen | Conditions |
|---|---|---|
| DHCR77-dehydrocholesterol reductase | Often (30–79%) | In 2 conditions |
| DYNLT2Bdynein light chain Tctex-type 2B | Often (30–79%) | In 1 condition |
| NEK1NIMA related kinase 1 | Often (30–79%) | In 1 condition |
| OFD1OFD1 centriole and centriolar satellite protein | Often (30–79%) | In 1 condition |
| OTUD5OTU deubiquitinase 5 | Often (30–79%) | In 1 condition |
| PLAAphospholipase A2 activating protein | Often (30–79%) | In 1 condition |
| PRKACBprotein kinase cAMP-activated catalytic subunit beta | Often (30–79%) | In 1 condition |
| RAB34RAB34, member RAS oncogene family | Often (30–79%) | In 1 condition |
| SUFUSUFU negative regulator of hedgehog signaling | Often (30–79%) | In 1 condition |
| BMP4bone morphogenetic protein 4 | Sometimes (5–29%) | In 1 condition |
| CEP120centrosomal protein 120 | Sometimes (5–29%) | In 1 condition |
| DYNC2H1dynein cytoplasmic 2 heavy chain 1 | Sometimes (5–29%) | In 1 condition |
| DYNC2I1dynein 2 intermediate chain 1 | Sometimes (5–29%) | In 1 condition |
| DYNC2I2dynein 2 intermediate chain 2 | Sometimes (5–29%) | In 1 condition |
| DYNC2LI1dynein cytoplasmic 2 light intermediate chain 1 | Sometimes (5–29%) | In 1 condition |
| EXTL3exostosin like glycosyltransferase 3 | Sometimes (5–29%) | In 1 condition |
| IFT140intraflagellar transport 140 | Sometimes (5–29%) | In 1 condition |
| IFT172intraflagellar transport 172 | Sometimes (5–29%) | In 1 condition |
| IFT80intraflagellar transport 80 | Sometimes (5–29%) | In 1 condition |
| INPP5Einositol polyphosphate-5-phosphatase E | Sometimes (5–29%) | In 1 condition |
| KIAA0753KIAA0753 | Sometimes (5–29%) | In 1 condition |
| LBRlamin B receptor | Sometimes (5–29%) | In 1 condition |
| MKKSMKKS centrosomal shuttling protein | Sometimes (5–29%) | In 1 condition |
| NPHP3nephrocystin 3 | Sometimes (5–29%) | In 1 condition |
| SMOC1SPARC related modular calcium binding 1 | Sometimes (5–29%) | In 2 conditions |
| TTC21Btetratricopeptide repeat domain 21B | Sometimes (5–29%) | In 1 condition |
| WDR19WD repeat domain 19 | Sometimes (5–29%) | In 1 condition |
| CD96CD96 molecule | Not recorded | In 1 condition |
| EVCEvC ciliary complex subunit 1 | Not recorded | In 2 conditions |
| EVC2EvC ciliary complex subunit 2 | Not recorded | In 2 conditions |
| HOXD13homeobox D13 | Not recorded | In 1 condition |
| KIAA0825KIAA0825 | 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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