Genetic Variant KRT82:p.Val438Met (chr12-52395768-C-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

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

The NM_033033.4(KRT82):c.1312G>A(p.Val438Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000113 in 1,553,814 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 Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00016 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00011 ( 0 hom. )

Consequence

KRT82
NM_033033.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.691

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:58283):

ENSG00000258253 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=0.31951478).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KRT82	NM_033033.4 link	c.1312G>A	p.Val438Met	missense_variant	Exon 8 of 9	ENST00000257974.3	NP_149022.3	Q9NSB4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KRT82	ENST00000257974.3 link	c.1312G>A	p.Val438Met	missense_variant	Exon 8 of 9	1	NM_033033.4	ENSP00000257974.3		Q9NSB4
ENSG00000258253	ENST00000547174.1 link	n.147-6224C>T		intron_variant	Intron 1 of 1	4

Frequencies

GnomAD3 genomes

AF:

0.000158

AC:

AN:

152146

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000362

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000386

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.000479

GnomAD3 exomes

AF:

0.0000602

AC:

AN:

199296

Hom.:

AF XY:

0.0000470

AC XY:

AN XY:

106446

show subpopulations

Gnomad AFR exome

AF:

0.000325

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000612

Gnomad SAS exome

AF:

0.000157

Gnomad FIN exome

AF:

0.0000520

Gnomad NFE exome

AF:

0.0000209

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000108

AC:

151

AN:

1401668

Hom.:

Cov.:

AF XY:

0.0000982

AC XY:

AN XY:

692814

show subpopulations

Gnomad4 AFR exome

AF:

0.000975

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000790

Gnomad4 SAS exome

AF:

0.0000793

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000672

Gnomad4 OTH exome

AF:

0.000173

GnomAD4 genome

AF:

0.000158

AC:

AN:

152146

Hom.:

Cov.:

AF XY:

0.0000942

AC XY:

AN XY:

74304

show subpopulations

Gnomad4 AFR

AF:

0.000362

Gnomad4 AMR

AF:

0.000196

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000386

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.000479

Alfa

AF:

0.0000433

Hom.:

Bravo

AF:

0.000132

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000412

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 13, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1312G>A (p.V438M) alteration is located in exon 8 (coding exon 8) of the KRT82 gene. This alteration results from a G to A substitution at nucleotide position 1312, causing the valine (V) at amino acid position 438 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

0.31

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Benign

-0.12

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.17

Eigen

Uncertain

0.34

Eigen_PC

Uncertain

0.37

FATHMM_MKL

Uncertain

0.88

LIST_S2

Uncertain

0.92

M_CAP

Benign

0.072

MetaRNN

Benign

0.32

MetaSVM

Uncertain

0.066

MutationAssessor

Pathogenic

3.1

PrimateAI

Uncertain

0.63

PROVEAN

Uncertain

-2.7

REVEL

Uncertain

0.33

Sift

Benign

0.060

Sift4G

Benign

0.15

Polyphen

1.0

Vest4

0.36

MVP

0.85

MPC

0.36

ClinPred

0.69

GERP RS

4.9

Varity_R

0.17

gMVP

0.36

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