Variant chr12-52399987-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_033033.4(KRT82):c.940C>T(p.Arg314Trp) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.00106 in 1,613,178 control chromosomes in the GnomAD database, including 1 homozygotes. 2/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00062 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0011 ( 1 hom. )

Consequence

KRT82
NM_033033.4 missense, splice_region

Scores

Splicing: ADA: 0.9855

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.07

Variant links:

Genes affected

KRT82 (HGNC:6459): (keratin 82) The protein encoded by this gene is a member of the keratin gene family. As a type II hair keratin, it is a basic protein which heterodimerizes with type I keratins to form hair and nails. The type II hair keratins are clustered in a region of chromosome 12q13 and are grouped into two distinct subfamilies based on structure similarity. One subfamily, consisting of KRTHB1, KRTHB3, and KRTHB6, is highly related. The other less-related subfamily includes KRTHB2, KRTHB4, and KRTHB5. All hair keratins are expressed in the hair follicle; this keratin appears to be a hair cuticle-specific keratin. [provided by RefSeq, Jul 2008]

KRT82 links:

ENSG00000258253 (HGNC:):

ENSG00000258253 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KRT82	NM_033033.4 linkuse as main transcript	c.940C>T	p.Arg314Trp	missense_variant, splice_region_variant	5/9	ENST00000257974.3	NP_149022.3	Q9NSB4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KRT82	ENST00000257974.3 linkuse as main transcript	c.940C>T	p.Arg314Trp	missense_variant, splice_region_variant	5/9	1	NM_033033.4	ENSP00000257974.3		Q9NSB4
ENSG00000258253	ENST00000547174.1 linkuse as main transcript	n.147-2005G>A		intron_variant		4

Frequencies

GnomAD3 genomes

AF:

0.000618

AC:

AN:

152212

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000145

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000850

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000622

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00104

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000698

AC:

175

AN:

250664

Hom.:

AF XY:

0.000708

AC XY:

AN XY:

135508

show subpopulations

Gnomad AFR exome

AF:

0.000246

Gnomad AMR exome

AF:

0.000723

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000948

Gnomad FIN exome

AF:

0.0000926

Gnomad NFE exome

AF:

0.000982

Gnomad OTH exome

AF:

0.000654

GnomAD4 exome

AF:

0.00111

AC:

1615

AN:

1460848

Hom.:

Cov.:

AF XY:

0.00108

AC XY:

787

AN XY:

726558

show subpopulations

Gnomad4 AFR exome

AF:

0.000120

Gnomad4 AMR exome

AF:

0.000738

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000858

Gnomad4 FIN exome

AF:

0.000150

Gnomad4 NFE exome

AF:

0.00131

Gnomad4 OTH exome

AF:

0.000630

GnomAD4 genome

AF:

0.000617

AC:

AN:

152330

Hom.:

Cov.:

AF XY:

0.000416

AC XY:

AN XY:

74486

show subpopulations

Gnomad4 AFR

AF:

0.000144

Gnomad4 AMR

AF:

0.000849

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000622

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00104

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000810

Hom.:

Bravo

AF:

0.000650

TwinsUK

AF:

0.00216

AC:

ALSPAC

AF:

0.00104

AC:

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00116

AC:

ExAC

AF:

0.000684

AC:

Asia WGS

AF:

0.000866

AC:

AN:

3478

EpiCase

AF:

0.000764

EpiControl

AF:

0.00113

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

Jul 14, 2021

The c.940C>T (p.R314W) alteration is located in exon 5 (coding exon 5) of the KRT82 gene. This alteration results from a C to T substitution at nucleotide position 940, causing the arginine (R) at amino acid position 314 to be replaced by a tryptophan (W). 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

0.22

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Uncertain

-0.050

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.66

Eigen

Uncertain

0.52

Eigen_PC

Uncertain

0.47

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Pathogenic

0.98

M_CAP

Uncertain

0.20

MetaRNN

Uncertain

0.52

MetaSVM

Uncertain

0.76

MutationAssessor

Uncertain

2.6

PrimateAI

Benign

0.36

PROVEAN

Pathogenic

-5.2

REVEL

Uncertain

0.63

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.63

MVP

0.82

MPC

0.35

ClinPred

0.10

GERP RS

4.1

Varity_R

0.70

gMVP

0.64

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

0.99

dbscSNV1_RF

Benign

0.71

SpliceAI score (max)

0.15

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