Genetic Variant VRK3:p.Lys141Arg (chr19-50007694-T-C) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_016440.4(VRK3):c.422A>G(p.Lys141Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000372 in 1,614,080 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00022 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000018 ( 0 hom. )

Consequence

VRK3
NM_016440.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.541

Variant links:

Genes affected

VRK3 (HGNC:18996): (VRK serine/threonine kinase 3) This gene encodes a member of the vaccinia-related kinase (VRK) family of serine/threonine protein kinases. In both human and mouse, this gene has substitutions at several residues within the ATP binding motifs that in other kinases have been shown to be required for catalysis. In vitro assays indicate the protein lacks phosphorylation activity. The protein, however, likely retains its substrate binding capability. This gene is widely expressed in human tissues and its protein localizes to the nucleus. Alternative splicing results in multiple transcripts encoding different isoforms. [provided by RefSeq, Jul 2008]

VRK3 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.08567613).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
VRK3	NM_016440.4 link	c.422A>G	p.Lys141Arg	missense_variant	Exon 5 of 15	ENST00000316763.8	NP_057524.3	Q8IV63-1A0A024QZI4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
VRK3	ENST00000316763.8 link	c.422A>G	p.Lys141Arg	missense_variant	Exon 5 of 15	1	NM_016440.4	ENSP00000324636.2		Q8IV63-1

Frequencies

GnomAD3 genomes

AF:

0.000217

AC:

AN:

152192

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000748

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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:

0.000478

GnomAD2 exomes

AF:

0.0000477

AC:

AN:

251478

AF XY:

0.0000294

show subpopulations

Gnomad AFR exome

AF:

0.000738

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000185

AC:

AN:

1461888

Hom.:

Cov.:

AF XY:

0.0000151

AC XY:

AN XY:

727244

show subpopulations

African (AFR)

AF:

0.000777

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39696

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1112010

Other (OTH)

AF:

0.0000166

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.499

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.000217

AC:

AN:

152192

Hom.:

Cov.:

AF XY:

0.000215

AC XY:

AN XY:

74352

show subpopulations

African (AFR)

AF:

0.000748

AC:

AN:

41442

American (AMR)

AF:

0.0000655

AC:

AN:

15278

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5194

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68038

Other (OTH)

AF:

0.000478

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.517

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.000105

Hom.:

Bravo

AF:

0.000212

ESP6500AA

AF:

0.000681

AC:

ESP6500EA

AF:

0.00

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

Nov 10, 2022

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.422A>G (p.K141R) alteration is located in exon 5 (coding exon 3) of the VRK3 gene. This alteration results from a A to G substitution at nucleotide position 422, causing the lysine (K) at amino acid position 141 to be replaced by an arginine (R). 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

0.070

BayesDel_addAF

Benign

-0.43

BayesDel_noAF

Benign

-0.48

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.011

T;.;T;.;T;.;.;T;T;.;T;T

Eigen

Benign

0.18

Eigen_PC

Benign

0.13

FATHMM_MKL

Benign

0.64

LIST_S2

Benign

0.69

.;.;.;T;T;T;T;T;T;T;T;T

M_CAP

Benign

0.015

MetaRNN

Benign

0.086

T;T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.84

MutationAssessor

Benign

1.6

L;.;L;.;L;.;L;.;.;.;.;.

PhyloP100

0.54

PrimateAI

Benign

0.47

PROVEAN

Benign

-1.4

N;N;.;.;.;.;.;.;.;.;.;.

REVEL

Benign

0.079

Sift

Benign

0.19

T;T;.;.;.;.;.;.;.;.;.;.

Sift4G

Uncertain

0.022

D;T;D;T;D;T;D;D;.;.;.;D

Polyphen

1.0

D;.;D;.;D;.;D;.;.;.;.;.

Vest4

0.10

MVP

0.60

MPC

0.11

ClinPred

0.040

GERP RS

3.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.037

gMVP

0.30

Mutation Taster

=89/11

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

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 for variant 19:50007694 T>C . It may be empty.

chr19-50007694-T-C

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over