17-41586781-G-T

Variant names:

Variant summary

Our verdict is Pathogenic. The variant received 11 ACMG points: 11P and 0B. PVS1PM2PP5

The NM_000526.5(KRT14):c.54C>A(p.Cys18*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000696 in 1,435,782 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars). Synonymous variant affecting the same amino acid position (i.e. C18C) has been classified as Benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 7.0e-7 ( 0 hom. )

Consequence

KRT14
NM_000526.5 stop_gained

Scores

Clinical Significance

Pathogenic no assertion criteria provided P:1O:1

Conservation

PhyloP100: -1.35

Publications

2 publications found

Variant links:

Genes affected

KRT14 (HGNC:6416): (keratin 14) This gene encodes a member of the keratin family, the most diverse group of intermediate filaments. This gene product, a type I keratin, is usually found as a heterotetramer with two keratin 5 molecules, a type II keratin. Together they form the cytoskeleton of epithelial cells. Mutations in the genes for these keratins are associated with epidermolysis bullosa simplex. At least one pseudogene has been identified at 17p12-p11. [provided by RefSeq, Jul 2008]

KRT14 Gene-Disease associations (from GenCC):

epidermolysis bullosa simplex 1A, generalized severe
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics, Genomics England PanelApp
Naegeli-Franceschetti-Jadassohn syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE, LIMITED Submitted by: Genomics England PanelApp, G2P, Orphanet, Ambry Genetics, Labcorp Genetics (formerly Invitae)
epidermolysis bullosa simplex
Inheritance: AR Classification: DEFINITIVE Submitted by: G2P
epidermolysis bullosa simplex 1D, generalized, intermediate or severe, autosomal recessive
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Ambry Genetics, Genomics England PanelApp
dermatopathia pigmentosa reticularis
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Genomics England PanelApp
epidermolysis bullosa simplex 1B, generalized intermediate
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Genomics England PanelApp
epidermolysis bullosa simplex 1C, localized
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Genomics England PanelApp
epidermolysis bullosa simplex 2F, with mottled pigmentation
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

KRT14 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 11 ACMG points.

PVS1

Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant located near the start codon (<100nt), not predicted to undergo nonsense mediated mRNA decay. There are 70 pathogenic variants in the truncated region.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 17-41586781-G-T is Pathogenic according to our data. Variant chr17-41586781-G-T is described in ClinVar as Pathogenic. ClinVar VariationId is 14626.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000526.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KRT14	NM_000526.5	MANE Select	c.54C>A	p.Cys18*	stop_gained	Exon 1 of 8	NP_000517.3

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KRT14	ENST00000167586.7	TSL:1 MANE Select	c.54C>A	p.Cys18*	stop_gained	Exon 1 of 8	ENSP00000167586.6

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000504

AC:

AN:

198318

AF XY:

0.00000921

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000116

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.96e-7

AC:

AN:

1435782

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

712612

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

32822

American (AMR)

AF:

0.00

AC:

AN:

41172

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25780

East Asian (EAS)

AF:

0.00

AC:

AN:

37996

South Asian (SAS)

AF:

0.00

AC:

AN:

83420

European-Finnish (FIN)

AF:

0.00

AC:

AN:

50044

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4108

European-Non Finnish (NFE)

AF:

9.08e-7

AC:

AN:

1101206

Other (OTH)

AF:

0.00

AC:

AN:

59234

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.325

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1Other:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

Dermatopathia pigmentosa reticularis

Pathogenic:1

Oct 01, 2006

OMIM

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:literature only

not provided

Other:1

Epithelial Biology; Institute of Medical Biology, Singapore

Significance:not provided

Review Status:no classification provided

Collection Method:literature only

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.58

BayesDel_noAF

Uncertain

0.040

CADD

Pathogenic

(source)

DANN

Uncertain

0.98

Eigen

Benign

-0.29

Eigen_PC

Benign

-0.62

FATHMM_MKL

Benign

0.13

PhyloP100

-1.4

Vest4

0.67

GERP RS

-3.2

PromoterAI

-0.012

Neutral

(source)

Mutation Taster

=38/162

disease causing (ClinVar)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over