17-41501357-C-T

Variant names:

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP4_StrongBP6_ModerateBS2

The NM_153490.3(KRT13):c.1276G>A(p.Val426Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0013 in 1,559,626 control chromosomes in the GnomAD database, including 7 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/17 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

Frequency

Genomes: 𝑓 0.0015 ( 2 hom., cov: 32)

Exomes 𝑓: 0.0013 ( 5 hom. )

Consequence

KRT13
NM_153490.3 missense

Scores

Clinical Significance

Benign criteria provided, single submitter B:2

Conservation

PhyloP100: -2.67

Variant links:

Genes affected

KRT13 (HGNC:6415): (keratin 13) The protein encoded by this gene is a member of the keratin gene family. The keratins are intermediate filament proteins responsible for the structural integrity of epithelial cells and are subdivided into cytokeratins and hair keratins. Most of the type I cytokeratins consist of acidic proteins which are arranged in pairs of heterotypic keratin chains. This type I cytokeratin is paired with keratin 4 and expressed in the suprabasal layers of non-cornified stratified epithelia. Mutations in this gene and keratin 4 have been associated with the autosomal dominant disorder White Sponge Nevus. The type I cytokeratins are clustered in a region of chromosome 17q21.2. Alternative splicing of this gene results in multiple transcript variants; however, not all variants have been described. [provided by RefSeq, Jul 2008]

KRT13 links:

ENSG00000229732 (HGNC:):

ENSG00000229732 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -10 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0053011775).

BP6

Variant 17-41501357-C-T is Benign according to our data. Variant chr17-41501357-C-T is described in ClinVar as [Benign]. Clinvar id is 323076.Status of the report is criteria_provided_single_submitter, 1 stars.

BS2

High AC in GnomAd4 at 223 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KRT13	NM_153490.3 link	c.1276G>A	p.Val426Ile	missense_variant	Exon 8 of 8	ENST00000246635.8	NP_705694.3	P13646-1A1A4E9
KRT13	NM_002274.4 link	c.1250G>A	p.Arg417His	missense_variant	Exon 7 of 7		NP_002265.3	P13646-3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KRT13	ENST00000246635.8 link	c.1276G>A	p.Val426Ile	missense_variant	Exon 8 of 8	1	NM_153490.3	ENSP00000246635.3		P13646-1

Frequencies

GnomAD3 genomes

AF:

0.00147

AC:

223

AN:

152136

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000217

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

Gnomad ASJ

AF:

0.00144

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00132

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00275

Gnomad OTH

AF:

0.00144

GnomAD3 exomes

AF:

0.00107

AC:

179

AN:

167754

Hom.:

AF XY:

0.00114

AC XY:

101

AN XY:

88276

show subpopulations

Gnomad AFR exome

AF:

0.000198

Gnomad AMR exome

AF:

0.000200

Gnomad ASJ exome

AF:

0.00104

Gnomad EAS exome

AF:

0.0000782

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00140

Gnomad NFE exome

AF:

0.00202

Gnomad OTH exome

AF:

0.000863

GnomAD4 exome

AF:

0.00129

AC:

1809

AN:

1407372

Hom.:

Cov.:

AF XY:

0.00133

AC XY:

927

AN XY:

694828

show subpopulations

Gnomad4 AFR exome

AF:

0.000246

Gnomad4 AMR exome

AF:

0.000333

Gnomad4 ASJ exome

AF:

0.000913

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000125

Gnomad4 FIN exome

AF:

0.00219

Gnomad4 NFE exome

AF:

0.00148

Gnomad4 OTH exome

AF:

0.000959

GnomAD4 genome

AF:

0.00146

AC:

223

AN:

152254

Hom.:

Cov.:

AF XY:

0.00130

AC XY:

AN XY:

74440

show subpopulations

Gnomad4 AFR

AF:

0.000217

Gnomad4 AMR

AF:

0.000261

Gnomad4 ASJ

AF:

0.00144

Gnomad4 EAS

AF:

0.000194

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00132

Gnomad4 NFE

AF:

0.00275

Gnomad4 OTH

AF:

0.00142

Alfa

AF:

0.00189

Hom.:

Bravo

AF:

0.00104

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.00234

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.00175

AC:

ExAC

AF:

0.000728

AC:

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

KRT13-related disorder

Benign:1

Jan 03, 2020

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

White sponge nevus 2

Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.083

BayesDel_addAF

Benign

-0.57

BayesDel_noAF

Benign

-0.53

CADD

Benign

0.042

DANN

Benign

0.74

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.0037

LIST_S2

Benign

0.47

M_CAP

Benign

0.014

MetaRNN

Benign

0.0053

MetaSVM

Benign

-0.92

PROVEAN

Benign

-0.10

REVEL

Benign

0.17

Sift

Benign

0.039

Sift4G

Benign

0.11

Polyphen

0.45

Vest4

0.023

MVP

0.33

ClinPred

0.019

GERP RS

-1.3

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over