Gene
KRT5
keratin 5
- HGNC 6442↗(opens in a new tab)
- Ensembl gene ENSG00000186081↗(opens in a new tab)
- NCBI Gene 3852↗(opens in a new tab)
Summary
- Cytogenetic location
- 12q13.13
- Coordinates
- Chromosome 12: 52,514,575–52,520,394 (GRCh38)
- Exons
- 9 exons across 5.8 kb
- Protein
- 590 amino acids
- Inheritance
- Autosomal dominant
- Also known as
- KRT5A, CK-5
- Previous symbols
- EBS2
- MANE Select transcript
- ENST00000252242.9NM_000424.4
- Locus type
- gene with protein product
- Very high
- Confident
- Low
- Very low
Reference genomeGRCh38hg38
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Epidermolysis Bullosa
- Epidermolysis Bullosa Simplex 1b, Generalized IntermediateAutosomal dominant
Non-Dowling-Meara generalized epidermolysis bullosa simplex, formerly known as epidermolysis bullosa simplex, Kobner type (EBS-K) is a generalized basal subtype of epidermolysis bullosa simplex (EBS) characterized by non-herpetiform blisters and erosions arising in particular at sites of friction.
- 1 GenCC submitter rates it definitive or strong
- Epidermolysis Bullosa Simplex 1a, Generalized SevereAutosomal dominant
A basal subtype of epidermolysis bullosa simplex (EBS) characterized by the presence of generalized vesicles and small blisters in grouped or arcuate configuration.
- 2 GenCC submitters rate it definitive or strong
- Epidermolysis Bullosa Simplex 1c, LocalizedAutosomal dominant
A basal subtype of epidermolysis bullosa simplex (EBS). The disease is characterized by blisters occurring mainly on the palms and soles, exacerbated by warm weather.
- 1 GenCC submitter rates it definitive or strong
- Inherited epidermolysis bullosa
All inherited forms of skin fragility with blistering, including simplex, junctional and dystrophic epidermolysis bullosa and Kindler syndrome.
- 4 GenCC submitters rate it definitive or strong
What knowing changes
Recessive dystrophic forms need regular skin cancer surveillance, and gene-based wound therapy is now available for dystrophic EB.
Broader groupings
Congenital Disorders of Glycosylation
- Congenital Disorders of Glycosylation (CDG)
One of 98 genes linked to it
A large group of inherited conditions in which sugar chains (glycans) are not correctly built or attached to proteins and lipids, often affecting the brain, liver, blood clotting, growth and many other body systems. Most are autosomal recessive, but some are X-linked or autosomal dominant.
- 2 GenCC submitters rate it definitive or strong
Inheritance
- Autosomal dominant
- One changed copy, from either parent, is enough. A parent who has one passes it on to each child with a one-in-two chance.
How KRT5 is laid out
- Coding sequence
- Untranslated region
- Intron
- Direction of transcription
- Known disease-causing sites
- Stretches short reads find hard
Exons of the gene's MANE Select transcript (release v1.5), from NCBI and EMBL-EBI, on the GRCh38 reference genome.
Chromosome bands from UCSC's GRCh38 ideogram (2022-10-29).
Nearby genes from Ensembl release 116, on GRCh38.
Exons make up 2.2 kb of the gene's 5.8 kb; 1,773 of those bases code for the protein.
How a genome test reads KRT5
34
positions in KRT5 where ClinVar classes a change as pathogenic or likely pathogenic
None of them falls in a region short reads find hard.
A whole genome covers all 5.8 kb of KRT5, introns included, not only the 2.2 kb of exons.
Genes linked to the same conditions
- KRT14keratin 14Shares 4 conditions
- A4GALTalpha 1,4-galactosyltransferase (P1PK blood group)Shares 1 condition
- ALG1ALG1 chitobiosyldiphosphodolichol beta-mannosyltransferaseShares 1 condition
- ALG11ALG11 alpha-1,2-mannosyltransferaseShares 1 condition
- ALG12ALG12 alpha-1,6-mannosyltransferaseShares 1 condition
- ALG13ALG13 UDP-N-acetylglucosaminyltransferase subunitShares 1 condition
- ALG14ALG14 UDP-N-acetylglucosaminyltransferase subunitShares 1 condition
- ALG2ALG2 alpha-1,3/1,6-mannosyltransferaseShares 1 condition
- ALG3ALG3 alpha-1,3- mannosyltransferaseShares 1 condition
- ALG6ALG6 alpha-1,3-glucosyltransferaseShares 1 condition
- ALG8ALG8 alpha-1,3-glucosyltransferaseShares 1 condition
- ALG9ALG9 alpha-1,2-mannosyltransferaseShares 1 condition
Traits linked to KRT5
The Human Phenotype Ontology lists these as features of the rare conditions KRT5 can cause. Each trait's page lists the other genes linked to it.
Abnormality of the integument
- Abnormal blistering of the skin
- Intra-epidermal blistering
- Onychomadesis
- Poor nail formation
- Poor toenail formation
- Small fifth toenail
- Stratum basale cleavage
- Tonofilament clumping
Show 52 more traits
- Fragile skin
- Generalized abnormality of skin
- Hyperkeratosis
- Itching
- Lamina lucida cleavage
- Mixed hypo- and hyperpigmentation of the skin
- Mottled skin coloring
- Progressive reticulate hyperpigmentation
- Reticulated skin pigmentation
- Skin fragility with non-scarring blistering
- Abnormal fingernails
- Abnormality of the toenail
- Absence of part of skin at birth
- Acral blistering
- Aplasia cutis congenita on trunk or limbs
- Atypical nail growth
- Fair skin
- Freckles in groin region
- Generalized reticulate brown pigmentation
- Hair loss
- Hyperkeratotic papule
- Hyperpigmented skin patches
- Hypomelanotic macule
- Milk spot
- Parakeratosis
- Patchy darkened skin
- Patchy hypopigmentation
- Skin erosion
- Skin plaque
- Skin vesicle
- Spotty increased pigmentation
- Sunken or indented skin due to damage
- Absent toenail
- Depigmentation/hyperpigmentation of skin
- Digital pitting scar
- Erythematous papule
- Excessive sweating
- Genital blistering
- Grooved nails
- Hyperpigmented papule
- Mole
- Patchy lightened skin
- Photosensitive skin
- Pretibial blistering
- Thick nail
- Epidermoid cyst
- Hypopigmented macule
- Keratoacanthoma
- Papule
- Squamous cell carcinoma of the skin
- Discrete 2 to 5-mm hyper- and hypopigmented macules
- Mottled pigmentation of the trunk and proximal extremities
Abnormality of limbs
- Mitten deformity
- Palmoplantar blistering
- Focal friction-related palmoplantar hyperkeratosis
- Thickening of palms and soles
- Palmar hyperkeratosis
- Plantar hyperkeratosis
- Thickening of the outer layer of the skin of the palms and soles
- Abnormality of the hand
Show 3 more traits
External links
Gene records
Transcript
Protein
Where this comes from
- HGNC: the gene's symbol, name, other symbols and location.
- MANE Select v1.5, from NCBI and EMBL-EBI: the transcript, its exons and coding sequence.
- GenCC and ClinGen, released 2026-10-16: which conditions the gene is linked to, and how strongly.
- The ACMG secondary findings list, SF v3.2.
- ClinVar and the GIAB stratifications: known disease-causing sites, and the regions short reads find hard.
- The Human Phenotype Ontology, release 2026-09-01: the traits linked to the gene. Find out more at hpo.jax.org.
- Data release 2026.10.16-c6eea6bf.
Cite this page
Dante Labs. (n.d.). KRT5 gene: keratin 5. Retrieved 16 October 2026, from https://dantelabs.com/genes/krt5
Dante Labs. KRT5 gene: keratin 5 [Internet]. [cited 16 October 2026]. Available from: https://dantelabs.com/genes/krt5
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