12-52173677-C-T

Position:

chr12-52173677-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_182507.3(KRT80):c.754G>A(p.Val252Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000031 in 1,613,020 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000033 ( 0 hom. )

Consequence

KRT80
NM_182507.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.207

Variant links:

Genes affected

KRT80 (HGNC:27056): (keratin 80) Keratins are intermediate filament proteins responsible for the structural integrity of epithelial cells and are subdivided into epithelial keratins and hair keratins. This gene's expression profile shows that it encodes a type II epithelial keratin, although structurally the encoded protein is more like a type II hair keratin. This protein is involved in cell differentiation, localizing near desmosomal plaques in earlier stages of differentiation but then dispersing throughout the cytoplasm in terminally differentiating cells. The type II keratins are clustered in a region of chromosome 12q13. Two transcript variants encoding two different fully functional isoforms have been found for this gene.[provided by RefSeq, Oct 2010]

KRT80 links:

LINC00592 (HGNC:27474): (long intergenic non-protein coding RNA 592)

LINC00592 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.25324488).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
KRT80	NM_182507.3 linkuse as main transcript	c.754G>A	p.Val252Met	missense_variant	5/9	ENST00000394815.3	NP_872313.2
KRT80	NM_001081492.2 linkuse as main transcript	c.754G>A	p.Val252Met	missense_variant	5/9		NP_001074961.1
KRT80	XM_005268676.4 linkuse as main transcript	c.859G>A	p.Val287Met	missense_variant	3/7		XP_005268733.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KRT80	ENST00000394815.3 linkuse as main transcript	c.754G>A	p.Val252Met	missense_variant	5/9	1	NM_182507.3	ENSP00000378292	P1	Q6KB66-1
KRT80	ENST00000313234.9 linkuse as main transcript	c.754G>A	p.Val252Met	missense_variant	5/9	1		ENSP00000369361		Q6KB66-2
LINC00592	ENST00000640420.1 linkuse as main transcript	n.413+8726C>T		intron_variant, non_coding_transcript_variant		5
KRT80	ENST00000466011.1 linkuse as main transcript	n.910G>A		non_coding_transcript_exon_variant	3/7	2

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152234

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000280

AC:

AN:

250356

Hom.:

AF XY:

0.0000295

AC XY:

AN XY:

135468

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000163

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000481

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000329

AC:

AN:

1460786

Hom.:

Cov.:

AF XY:

0.0000316

AC XY:

AN XY:

726760

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000504

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.0000382

Gnomad4 NFE exome

AF:

0.0000342

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152234

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74370

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000151

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.0000494

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

Oct 02, 2023

The c.754G>A (p.V252M) alteration is located in exon 5 (coding exon 5) of the KRT80 gene. This alteration results from a G to A substitution at nucleotide position 754, causing the valine (V) at amino acid position 252 to be replaced by a methionine (M). 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

0.32

BayesDel_addAF

Benign

-0.16

BayesDel_noAF

Benign

-0.21

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.40

.;T

Eigen

Benign

-0.052

Eigen_PC

Benign

0.024

FATHMM_MKL

Uncertain

0.76

LIST_S2

Benign

0.84

T;T

M_CAP

Uncertain

0.12

MetaRNN

Benign

0.25

T;T

MetaSVM

Uncertain

-0.17

MutationAssessor

Benign

1.4

L;L

MutationTaster

Benign

0.88

D;D

PrimateAI

Benign

0.47

PROVEAN

Benign

-2.3

N;N

REVEL

Uncertain

0.35

Sift

Pathogenic

0.0

D;D

Sift4G

Uncertain

0.019

D;D

Polyphen

0.89

P;P

Vest4

0.40

MutPred

0.60

Gain of catalytic residue at D247 (P = 0.0099);Gain of catalytic residue at D247 (P = 0.0099);

MVP

0.68

MPC

0.31

ClinPred

0.43

GERP RS

3.3

Varity_R

0.46

gMVP

0.40

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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