Genetic Variant KRT10:c.1749-10A>G (chr17-40818492-T-C) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_StrongBP6_Moderate

The NM_000421.5(KRT10):c.1749-10A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000318 in 1,573,666 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.00017 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000017 ( 0 hom. )

Consequence

KRT10
NM_000421.5 intron

Scores

Splicing: ADA: 0.00005694

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -0.656

Variant links:

Genes affected

KRT10 (HGNC:6413): (keratin 10) This gene encodes a member of the type I (acidic) cytokeratin family, which belongs to the superfamily of intermediate filament (IF) proteins. Keratins are heteropolymeric structural proteins which form the intermediate filament. These filaments, along with actin microfilaments and microtubules, compose the cytoskeleton of epithelial cells. Mutations in this gene are associated with epidermolytic hyperkeratosis. This gene is located within a cluster of keratin family members on chromosome 17q21. [provided by RefSeq, Jul 2008]

KRT10 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.82).

BP6

Variant 17-40818492-T-C is Benign according to our data. Variant chr17-40818492-T-C is described in ClinVar as [Likely_benign]. Clinvar id is 2500052.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KRT10	NM_000421.5 link	c.1749-10A>G		intron_variant	Intron 7 of 7	ENST00000269576.6	NP_000412.4	P13645
KRT10	NM_001379366.1 link	c.1769-10A>G		intron_variant	Intron 7 of 7		NP_001366295.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KRT10	ENST00000269576.6 link	c.1749-10A>G		intron_variant	Intron 7 of 7	1	NM_000421.5	ENSP00000269576.5		P13645
KRT10	ENST00000635956.2 link	c.1769-10A>G		intron_variant	Intron 7 of 7	2		ENSP00000490524.2		A0A1B0GVI3

Frequencies

GnomAD3 genomes

AF:

0.000171

AC:

AN:

152138

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000603

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000523

AC:

AN:

248698

Hom.:

AF XY:

0.0000297

AC XY:

AN XY:

134650

show subpopulations

Gnomad AFR exome

AF:

0.000739

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000899

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000169

AC:

AN:

1421528

Hom.:

Cov.:

AF XY:

0.0000113

AC XY:

AN XY:

709798

show subpopulations

Gnomad4 AFR exome

AF:

0.000524

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000279

Gnomad4 OTH exome

AF:

0.0000679

GnomAD4 genome

AF:

0.000171

AC:

AN:

152138

Hom.:

Cov.:

AF XY:

0.000135

AC XY:

AN XY:

74304

show subpopulations

Gnomad4 AFR

AF:

0.000603

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000192

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000197

Hom.:

Bravo

AF:

0.000257

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Epidermolytic ichthyosis;C0432311:Ichthyosis hystrix gravior;C3665704:Congenital reticular ichthyosiform erythroderma;CN324065:Ichthyosis, annular epidermolytic 1

Benign:1

Oct 11, 2022

Center for Genomics, Ann and Robert H. Lurie Children's Hospital of Chicago

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant has not been reported in the literature but is present in the Genome Aggregation Database (Highest reported MAF: 0.06% [25/41430]; https://gnomad.broadinstitute.org/variant/17-40818492-T-C?dataset=gnomad_r3). Although this variant occurs in the splice region, computational prediction tools do not suggest that it alters splicing. However, further studies are needed to understand its impact. This variant was also identified in an internal patient with alternate molecular basis for disease. In summary, data on this variant suggests that this variant does not cause disease but requires further evidence. Therefore, this variant is classified as likely benign. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.82

CADD

Benign

5.2

DANN

Benign

0.45

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.000057

dbscSNV1_RF

Benign

0.0

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

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