KRTAP9-4

keratin associated protein 9-4, the group of Keratin associated proteins

Basic information

Region (hg38): 17:41249687-41250653

Links

ENSG00000241595 ∙ NCBI:85280 ∙ ∙ HGNC:18902 ∙ Uniprot:Q9BYQ2 ∙ AlphaFold ∙ GenCC ∙ jax ∙ Sfari ∙ GnomAD ∙ Pubmed ∙ ClinVar

Phenotypes

GenCC

Source: genCC

No genCC data.

ClinVar

This is a list of variants' phenotypes submitted to ClinVar and linked to the KRTAP9-4 gene.

Variants pathogenicity by type

Statistics on ClinVar variants can assist in determining whether a specific variant type in the KRTAP9-4 gene is commonly pathogenic or not.

In the table, we include only reliable ClinVar variants with their consequences to MANE Select, Mane Plus Clinical transcripts, or transcripts with TSL equals 1. Click the count to view the source variants.

Warning: slight differences between displayed counts and the number of variants in ClinVar may occur, primarily due to (1) the application of a different transcript and/or consequence by our variant effect predictor or (2) differences in clinical significance: we classify Benign/Likely benign variants as Likely benign and Pathogenic/Likely pathogenic variants as Likely pathogenic.

Variant type	Pathogenic	Likely pathogenic	VUS	Likely benign	Benign	Sum
synonymous						0
missense			9	1		10
nonsense						0
start loss						0
frameshift						0
inframe indel						0
splice donor/acceptor (+/-2bp)						0
splice region						0
non coding						0
Total	0	0	9	1	0

Variants in KRTAP9-4

This is a list of pathogenic ClinVar variants found in the KRTAP9-4 region.

You can filter this list by clicking the number of variants in the Variants pathogenicity by type table.

Position	Type	Phenotype	Significance	ClinVar
17-41249739-C-T		not specified	Uncertain significance (Aug 12, 2021)
17-41249878-G-A		not specified	Likely benign (Jan 26, 2022)
17-41249887-G-T		not specified	Uncertain significance (Dec 16, 2022)
17-41249922-A-G		not specified	Uncertain significance (Jan 09, 2024)
17-41249940-T-C		not specified	Uncertain significance (Feb 05, 2024)
17-41249995-A-G		not specified	Uncertain significance (Oct 03, 2022)
17-41250072-A-C		not specified	Uncertain significance (Jan 23, 2023)
17-41250111-C-T		not specified	Uncertain significance (Aug 08, 2023)
17-41250147-A-C		not specified	Uncertain significance (Mar 23, 2022)
17-41250152-T-G		not specified	Uncertain significance (Jan 17, 2023)

GnomAD

Source: gnomAD

Gene	Type	Bio Type	Transcript	Coding Exons	Length
KRTAP9-4	protein_coding	protein_coding	ENST00000334109	1	966

pLI Probability LOF Intolerant	pRec Probability LOF Recessive	Individuals with no LOFs	Individuals with Homozygous LOFs	Individuals with Heterozygous LOFs	Defined	p

	Z-Score	Observed	Expected	Observed/Expected	Mutation Rate	Total Possible in Transcript
Missense	-0.978	104	79.5	1.31	0.00000379	1000
Missense in Polyphen		20	20.308	0.98484		274
Synonymous	-3.18	51	29.2	1.75	0.00000131	280
Loss of Function

LoF frequencies by population

Ethnicity	Sum of pLOFs	p
African & African-American	0.00	0.00
Ashkenazi Jewish
East Asian
Finnish
European (Non-Finnish)
Middle Eastern
South Asian
Other

dbNSFP

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.

Recessive Scores

• pRec: 0.0996

Intolerance Scores

• loftool: 0.531
• rvis_EVS: 0.44
• rvis_percentile_EVS: 77.57

Haploinsufficiency Scores

• hipred: N
• hipred_score: 0.146
• ghis: 0.406

Essentials

• essential_gene_CRISPR: N
• essential_gene_gene_trap: N
• gene_indispensability_pred: N
• gene_indispensability_score: 0.224

Gene Damage Prediction

	All	Recessive	Dominant
Mendelian	Medium	Medium	Medium
Primary Immunodeficiency	Medium	Medium	Medium
Cancer	Medium	Medium	Medium

Gene ontology

• Biological process: keratinization
• Cellular component: cytosol;keratin filament
• Molecular function: protein binding