12-52378224-C-T

Variant names:

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 2P and 12B. PM2BP4_StrongBP6_Very_Strong

The NM_033045.4(KRT84):c.1613G>A(p.Arg538Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000217 in 1,568,010 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R538W) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000020 ( 0 hom. )

Consequence

KRT84
NM_033045.4 missense

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -2.08

Variant links:

Genes affected

KRT84 (HGNC:6461): (keratin 84) 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 hair keratin is contained primarily in the filiform tongue papilla, among other hair keratins. [provided by RefSeq, Jul 2008]

KRT84 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -10 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.023459613).

BP6

Variant 12-52378224-C-T is Benign according to our data. Variant chr12-52378224-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 2316826.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KRT84	NM_033045.4 link	c.1613G>A	p.Arg538Gln	missense_variant	Exon 9 of 9	ENST00000257951.3	NP_149034.2	Q9NSB2
KRT84	XM_011538335.3 link	c.1613G>A	p.Arg538Gln	missense_variant	Exon 10 of 10		XP_011536637.1	Q9NSB2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KRT84	ENST00000257951.3 link	c.1613G>A	p.Arg538Gln	missense_variant	Exon 9 of 9	1	NM_033045.4	ENSP00000257951.3		Q9NSB2

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

152178

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000647

AC:

AN:

169914

Hom.:

AF XY:

0.0000762

AC XY:

AN XY:

91804

show subpopulations

Gnomad AFR exome

AF:

0.000215

Gnomad AMR exome

AF:

0.0000738

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000223

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000435

Gnomad OTH exome

AF:

0.000225

GnomAD4 exome

AF:

0.0000205

AC:

AN:

1415832

Hom.:

Cov.:

AF XY:

0.0000228

AC XY:

AN XY:

700250

show subpopulations

Gnomad4 AFR exome

AF:

0.000276

Gnomad4 AMR exome

AF:

0.0000512

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000801

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000128

Gnomad4 OTH exome

AF:

0.0000171

GnomAD4 genome

AF:

0.0000329

AC:

AN:

152178

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74334

show subpopulations

Gnomad4 AFR

AF:

0.0000482

Gnomad4 AMR

AF:

0.000196

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000566

Hom.:

Bravo

AF:

0.0000680

ExAC

AF:

0.0000255

AC:

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:1

Dec 15, 2022

Ambry Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

not provided

Benign:1

Breakthrough Genomics, Breakthrough Genomics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.075

BayesDel_addAF

Benign

-0.42

BayesDel_noAF

Benign

-0.55

CADD

Benign

0.62

DANN

Benign

0.74

DEOGEN2

Benign

0.012

Eigen

Benign

-1.9

Eigen_PC

Benign

-2.0

FATHMM_MKL

Benign

0.0076

LIST_S2

Benign

0.46

M_CAP

Benign

0.025

MetaRNN

Benign

0.023

MetaSVM

Benign

-0.97

MutationAssessor

Benign

0.60

PrimateAI

Benign

0.29

PROVEAN

Benign

0.16

REVEL

Benign

0.12

Sift

Benign

0.63

Sift4G

Benign

0.64

Polyphen

0.0020

Vest4

0.058

MutPred

0.30

Gain of catalytic residue at A537 (P = 0.0031);

MVP

0.26

MPC

0.029

ClinPred

0.0022

GERP RS

-3.9

Varity_R

0.021

gMVP

0.26

Splicing

Name

Calibrated prediction

Score

Prediction

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