chr12-52245413-G-A

Position:

chr12-52245413-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_005556.4(KRT7):c.986G>A(p.Arg329His) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.0000155 in 1,613,448 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/23 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000014 ( 0 hom. )

Consequence

KRT7
NM_005556.4 missense, splice_region

Scores

Splicing: ADA: 0.01054

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.96

Variant links:

Genes affected

KRT7 (HGNC:6445): (keratin 7) The protein encoded by this gene is a member of the keratin gene family. The type II cytokeratins consist of basic or neutral proteins which are arranged in pairs of heterotypic keratin chains coexpressed during differentiation of simple and stratified epithelial tissues. This type II cytokeratin is specifically expressed in the simple epithelia lining the cavities of the internal organs and in the gland ducts and blood vessels. The genes encoding the type II cytokeratins are clustered in a region of chromosome 12q12-q13. Alternative splicing may result in several transcript variants; however, not all variants have been fully described. [provided by RefSeq, Jul 2008]

KRT7 links:

KRT7-AS (HGNC:52643): (KRT7 antisense RNA 1)

KRT7-AS links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.29438078).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
KRT7	NM_005556.4 linkuse as main transcript	c.986G>A	p.Arg329His	missense_variant, splice_region_variant	7/9	ENST00000331817.6
KRT7-AS	NR_146274.1 linkuse as main transcript	n.1328C>T		non_coding_transcript_exon_variant	2/2
KRT7	XM_011538325.3 linkuse as main transcript	c.986G>A	p.Arg329His	missense_variant, splice_region_variant	7/8
KRT7	XM_017019294.2 linkuse as main transcript	c.455G>A	p.Arg152His	missense_variant, splice_region_variant	5/7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
KRT7	ENST00000331817.6 linkuse as main transcript	c.986G>A	p.Arg329His	missense_variant, splice_region_variant	7/9	1	NM_005556.4	P1
KRT7-AS	ENST00000546686.1 linkuse as main transcript	n.1328C>T		non_coding_transcript_exon_variant	2/2	1

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152260

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000241

AC:

AN:

248688

Hom.:

AF XY:

0.0000296

AC XY:

AN XY:

134938

show subpopulations

Gnomad AFR exome

AF:

0.0000640

Gnomad AMR exome

AF:

0.0000581

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:

0.0000267

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000144

AC:

AN:

1461188

Hom.:

Cov.:

AF XY:

0.0000110

AC XY:

AN XY:

726938

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.0000448

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000126

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152260

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74384

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000329

Hom.:

Bravo

AF:

0.0000264

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 22, 2024

The c.986G>A (p.R329H) alteration is located in exon 7 (coding exon 7) of the KRT7 gene. This alteration results from a G to A substitution at nucleotide position 986, causing the arginine (R) at amino acid position 329 to be replaced by a histidine (H). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Benign

-0.038

BayesDel_noAF

Benign

-0.11

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.51

D;.

Eigen

Benign

0.11

Eigen_PC

Benign

0.17

FATHMM_MKL

Uncertain

0.93

LIST_S2

Benign

0.76

T;T

M_CAP

Benign

0.037

MetaRNN

Benign

0.29

T;T

MetaSVM

Uncertain

0.17

MutationAssessor

Uncertain

2.5

M;.

MutationTaster

Benign

1.0

PrimateAI

Benign

0.28

PROVEAN

Benign

-1.4

N;.

REVEL

Uncertain

0.50

Sift

Benign

0.56

T;.

Sift4G

Benign

0.55

T;.

Polyphen

0.24

B;.

Vest4

0.24

MVP

0.73

MPC

0.37

ClinPred

0.097

GERP RS

3.5

Varity_R

0.17

gMVP

0.73

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.011

dbscSNV1_RF

Benign

0.11

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