KRTAP4-3

protein-coding

keratin associated protein 4-3, the group of Keratin associated proteins

Gene summary

Involved in hair cycle. Predicted to be located in cytosol. [provided by Alliance of Genome Resources, Jul 2025]

MANE transcript

NM_033187.2

Inheritance

—

ClinVar variants

U:31B:3

Top phenotype

—

gnomAD constraint

pLI —, LoF o/e —

Max pathogenic AF

—

Genomic locus

chr17:41,167,231-41,168,221

External References & Databases

Transcript & Mutation Effects

hg38 • Region Span ~1.0 kb
Loading mutation effect viewer...

GenCC Phenotypes & Disease Associations

Curated gene-disease validity assertions and inheritance patterns

No GenCC data available for this gene.

ClinVar Associated Diseases & Phenotypes

Reported disease conditions connected to KRTAP4-3 variants in ClinVar

2 Conditions Cataloged
not specifiedTotal: 32
not providedTotal: 3

ClinVar Variants & Pathogenicity by Type

Statistics based on transcript NM_033187.2. Only rare variants are included.

We include only reliable ClinVar variants with their consequences to MANE Select, MANE Plus Clinical transcripts, or transcripts with TSL equal to 1. Click a count to filter the variants table below.

Slight differences between displayed counts and ClinVar may occur due to a different transcript/consequence chosen by our variant effect predictor, or because we classify Benign/Likely benign as Likely benign and Pathogenic/Likely pathogenic as Likely pathogenic.

EffectPLPVUSLBBSum
synonymous
2
clinvar
2
missense
31
clinvar
1
clinvar
32
nonsense
0
start loss
0
frameshift
0
splice donor/acceptor (+/-2bp)
0
Total00313034
Loading ClinVar variants...

Transcript Catalog

Annotated transcript isoforms across RefSeq and Ensembl databases

Showing 2 of 2 transcripts
Transcript IDSourceProtein IDCoding ExonsMANE Status
NM_033187.2RefSeqNP_149443.11MANE Select
ENST00000391356.4EnsemblENSP00000375151.21MANE Select

Gene Ontology (GO) Annotations & Pathways

Biological processes, molecular functions, cellular components and pathways

Biological Process

  • aging
  • keratinization
  • hair cycle

Cellular Component

  • cytosol
  • keratin filament

gnomAD Constraint

Source: gnomAD

Gene type
protein_coding
Transcript type
protein_coding
Transcript
ENST00000391356
Coding exons
1
Length
941
Z-ScoreObservedExpectedObserved/ExpectedMutation RateTotal Possible
Missense0.507981130.8660.000006311303
Missense (PolyPhen)
Synonymous0.4323538.40.9110.00000197335
Loss of Function

Population LoF Frequency

PopulationCAFp-valueStatus
African00.0absent
Latino/Admixed American00.0absent
Ashkenazi Jewish00.0absent
East Asian00.0absent
Finnish00.0absent
European (Non-Finnish)00.0absent
South Asian00.0absent
Other00.0absent

dbNSFP Gene Annotations

Source: dbNSFP

Function
FUNCTION: In the hair cortex, hair keratin intermediate filaments are embedded in an interfilamentous matrix, consisting of hair keratin-associated proteins (KRTAP), which are essential for the formation of a rigid and resistant hair shaft through their extensive disulfide bond cross-linking with abundant cysteine residues of hair keratins. The matrix proteins include the high- sulfur and high-glycine-tyrosine keratins.;

Intolerance Scores

LoFtool
0.839
RVIS EVS
0.66
RVIS percentile EVS
84.35

Essentials

Essential (CRISPR)
N
Essential (CRISPR2)
N
Essential (gene trap)
N
Indispensability pred.
N
Indispensability score
0.0939

Gene Damage Prediction

AllRecessiveDominant
MendelianMediumMediumMedium
Primary ImmunodeficiencyMediumMediumMedium
CancerMediumMediumMedium
For research and educational, non-commercial use only. Not for clinical or diagnostic use. GeneBe does not provide medical advice. Data use for AI modeling is prohibited: if used, the cost is $0.001 per byte of downloaded uncompressed data.