Trait
Finger-like thumb
Clinical name: Triphalangeal thumb
A thumb with three phalanges in a single, proximo-distal axis. Thus, this term applies if the thumb has an accessory phalanx, leading to a digit like appearance of the thumb.
Summary
- Also called
- Accessory phalanx of the thumb, Digitalized thumb, Triphalangeal thumbs, Triphalangy of thumb
Reference genomeGRCh38hg38
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Get my Genome Test72 genes linked to Finger-like thumb
Changes in these genes cause rare conditions in which Finger-like thumb 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 |
|---|---|---|
| RPL15ribosomal protein L15 | Always | In 2 conditions |
| TOP2BDNA topoisomerase II beta | Always | In 1 condition |
| DACT1dishevelled binding antagonist of beta catenin 1 | Very often (80–99%) | In 1 condition |
| LMBR1limb development membrane protein 1 | Very often (80–99%) | In 5 conditions |
| SALL1spalt like transcription factor 1 | Very often (80–99%) | In 2 conditions |
| ATP6V1B2ATPase H+ transporting V1 subunit B2 | Often (30–79%) | In 3 conditions |
| GLI3GLI family zinc finger 3 | Often (30–79%) | In 2 conditions |
| KCNN3potassium calcium-activated channel subfamily N member 3 | Often (30–79%) | In 1 condition |
| KIF7kinesin family member 7 | Often (30–79%) | In 1 condition |
| RPL5ribosomal protein L5 | Often (30–79%) | In 2 conditions |
| SALL4spalt like transcription factor 4 | Often (30–79%) | In 5 conditions |
| TBC1D24TBC1 domain family member 24 | Often (30–79%) | In 2 conditions |
| TBX5T-box transcription factor 5 | Often (30–79%) | In 2 conditions |
| ADA2adenosine deaminase 2 | Sometimes (5–29%) | In 1 condition |
| BRCA1BRCA1 DNA repair associated | Sometimes (5–29%) | In 1 condition |
| BRCA2BRCA2 DNA repair associated | Sometimes (5–29%) | In 1 condition |
| BRIP1BRCA1 interacting DNA helicase 1 | Sometimes (5–29%) | In 1 condition |
| CHN1chimerin 1 | Sometimes (5–29%) | In 1 condition |
| ERCC4ERCC excision repair 4, endonuclease catalytic subunit | Sometimes (5–29%) | In 1 condition |
| FAAP100FA core complex associated protein 100 | Sometimes (5–29%) | In 1 condition |
| FANCAFA complementation group A | Sometimes (5–29%) | In 1 condition |
| FANCBFA complementation group B | Sometimes (5–29%) | In 1 condition |
| FANCCFA complementation group C | Sometimes (5–29%) | In 1 condition |
| FANCD2FA complementation group D2 | Sometimes (5–29%) | In 1 condition |
| FANCEFA complementation group E | Sometimes (5–29%) | In 1 condition |
| FANCFFA complementation group F | Sometimes (5–29%) | In 1 condition |
| FANCGFA complementation group G | Sometimes (5–29%) | In 1 condition |
| FANCIFA complementation group I | Sometimes (5–29%) | In 1 condition |
| FANCLFA complementation group L | Sometimes (5–29%) | In 1 condition |
| FANCMFA complementation group M | Sometimes (5–29%) | In 1 condition |
| FGFR2fibroblast growth factor receptor 2 | Sometimes (5–29%) | In 2 conditions |
| FGFR3fibroblast growth factor receptor 3 | Sometimes (5–29%) | In 1 condition |
| GATA1GATA binding protein 1 | Sometimes (5–29%) | In 1 condition |
| HEATR3HEAT repeat containing 3 | Sometimes (5–29%) | In 1 condition |
| MAD2L2mitotic arrest deficient 2 like 2 | Sometimes (5–29%) | In 1 condition |
| MAFBMAF bZIP transcription factor B | Sometimes (5–29%) | In 1 condition |
| MSX2msh homeobox 2 | Sometimes (5–29%) | In 1 condition |
| PALB2partner and localizer of BRCA2 | Sometimes (5–29%) | In 1 condition |
| PIGBphosphatidylinositol glycan anchor biosynthesis class B | Sometimes (5–29%) | In 1 condition |
| RAD51RAD51 recombinase | Sometimes (5–29%) | In 1 condition |
Show 32 more genes
| Gene | How often it is seen | Conditions |
|---|---|---|
| RAD51CRAD51 paralog C | Sometimes (5–29%) | In 1 condition |
| RBMXRNA binding motif protein X-linked | Sometimes (5–29%) | In 1 condition |
| RFWD3ring finger and WD repeat domain 3 | Sometimes (5–29%) | In 1 condition |
| RPL11ribosomal protein L11 | Sometimes (5–29%) | In 2 conditions |
| RPL18ribosomal protein L18 | Sometimes (5–29%) | In 1 condition |
| RPL26ribosomal protein L26 | Sometimes (5–29%) | In 1 condition |
| RPL27ribosomal protein L27 | Sometimes (5–29%) | In 1 condition |
| RPL31ribosomal protein L31 | Sometimes (5–29%) | In 1 condition |
| RPL35ribosomal protein L35 | Sometimes (5–29%) | In 1 condition |
| RPL35Aribosomal protein L35a | Sometimes (5–29%) | In 1 condition |
| RPL8ribosomal protein L8 | Sometimes (5–29%) | In 1 condition |
| RPL9ribosomal protein L9 | Sometimes (5–29%) | In 1 condition |
| RPS10ribosomal protein S10 | Sometimes (5–29%) | In 1 condition |
| RPS15Aribosomal protein S15a | Sometimes (5–29%) | In 1 condition |
| RPS17ribosomal protein S17 | Sometimes (5–29%) | In 1 condition |
| RPS19ribosomal protein S19 | Sometimes (5–29%) | In 2 conditions |
| RPS20ribosomal protein S20 | Sometimes (5–29%) | In 1 condition |
| RPS24ribosomal protein S24 | Sometimes (5–29%) | In 1 condition |
| RPS26ribosomal protein S26 | Sometimes (5–29%) | In 1 condition |
| RPS27ribosomal protein S27 | Sometimes (5–29%) | In 1 condition |
| RPS28ribosomal protein S28 | Sometimes (5–29%) | In 1 condition |
| RPS29ribosomal protein S29 | Sometimes (5–29%) | In 1 condition |
| RPS7ribosomal protein S7 | Sometimes (5–29%) | In 1 condition |
| SF3B4splicing factor 3b subunit 4 | Sometimes (5–29%) | In 2 conditions |
| SHHsonic hedgehog signaling molecule | Sometimes (5–29%) | In 1 condition |
| SLX4SLX4 structure-specific endonuclease subunit | Sometimes (5–29%) | In 1 condition |
| TSR2TSR2 ribosome maturation factor | Sometimes (5–29%) | In 1 condition |
| TWIST1twist family bHLH transcription factor 1 | Sometimes (5–29%) | In 1 condition |
| UBE2Tubiquitin conjugating enzyme E2 T | Sometimes (5–29%) | In 1 condition |
| XRCC2X-ray repair cross complementing 2 | Sometimes (5–29%) | In 1 condition |
| DLX5distal-less homeobox 5 | Not recorded | In 1 condition |
| TP63tumor protein p63 | 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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