Genetic Variant CSNK2A1:p.Val346Ile (chr20-486400-C-T) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 1P and 7B. PP2BP4_ModerateBP6BS2

The NM_177559.3(CSNK2A1):c.1036G>A(p.Val346Ile) variant causes a missense change. The variant allele was found at a frequency of 0.0000347 in 1,613,472 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000034 ( 0 hom. )

Consequence

CSNK2A1
NM_177559.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: 5.64

Publications

3 publications found

Variant links:

Genes affected

CSNK2A1 (HGNC:2457): (casein kinase 2 alpha 1) Casein kinase II is a serine/threonine protein kinase that phosphorylates acidic proteins such as casein. It is involved in various cellular processes, including cell cycle control, apoptosis, and circadian rhythm. The kinase exists as a tetramer and is composed of an alpha, an alpha-prime, and two beta subunits. The alpha subunits contain the catalytic activity while the beta subunits undergo autophosphorylation. The protein encoded by this gene represents the alpha subunit. Multiple transcript variants encoding different protein isoforms have been found for this gene. [provided by RefSeq, Apr 2018]

CSNK2A1 Gene-Disease associations (from GenCC):

Okur-Chung neurodevelopmental syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, G2P, Illumina, Labcorp Genetics (formerly Invitae)
syndromic intellectual disability
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen

CSNK2A1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -6 ACMG points.

PP2

Missense variant in the CSNK2A1 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 28 curated pathogenic missense variants (we use a threshold of 10). The gene has 7 curated benign missense variants. Gene score misZ: 3.7123 (above the threshold of 3.09). Trascript score misZ: 5.3205 (above the threshold of 3.09). GenCC associations: The gene is linked to Okur-Chung neurodevelopmental syndrome, syndromic intellectual disability.

BP4

Computational evidence support a benign effect (MetaRNN=0.1708082).

BP6

Variant 20-486400-C-T is Benign according to our data. Variant chr20-486400-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 809211.

BS2

High AC in GnomAd4 at 7 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_177559.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CSNK2A1	NM_177559.3	MANE Select	c.1036G>A	p.Val346Ile	missense	Exon 13 of 14	NP_808227.1	P68400-1
CSNK2A1	NM_001362770.2		c.1036G>A	p.Val346Ile	missense	Exon 13 of 15	NP_001349699.1	P68400-1
CSNK2A1	NM_001362771.2		c.1036G>A	p.Val346Ile	missense	Exon 12 of 14	NP_001349700.1	P68400-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CSNK2A1	ENST00000217244.9	TSL:1 MANE Select	c.1036G>A	p.Val346Ile	missense	Exon 13 of 14	ENSP00000217244.3	P68400-1
CSNK2A1	ENST00000400227.8	TSL:1	c.1036G>A	p.Val346Ile	missense	Exon 12 of 13	ENSP00000383086.3	E7EU96
CSNK2A1	ENST00000349736.10	TSL:1	c.628G>A	p.Val210Ile	missense	Exon 11 of 12	ENSP00000339247.6	P68400-2

Frequencies

GnomAD3 genomes

AF:

0.0000462

AC:

AN:

151666

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000485

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000736

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000398

AC:

AN:

251390

AF XY:

0.0000662

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000704

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000335

AC:

AN:

1461806

Hom.:

Cov.:

AF XY:

0.0000399

AC XY:

AN XY:

727210

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39698

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86254

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53408

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000396

AC:

AN:

1111954

Other (OTH)

AF:

0.0000166

AC:

AN:

60388

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.465

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000462

AC:

AN:

151666

Hom.:

Cov.:

AF XY:

0.0000405

AC XY:

AN XY:

73988

show subpopulations

African (AFR)

AF:

0.0000485

AC:

AN:

41246

American (AMR)

AF:

0.00

AC:

AN:

15186

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5200

South Asian (SAS)

AF:

0.00

AC:

AN:

4798

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10504

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000736

AC:

AN:

67960

Other (OTH)

AF:

0.00

AC:

AN:

2078

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.461

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000142

Hom.:

Bravo

AF:

0.0000529

ExAC

AF:

0.0000576

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Inborn genetic diseases (1)

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.085

BayesDel_addAF

Benign

-0.16

BayesDel_noAF

Benign

-0.28

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.32

Eigen

Benign

0.022

Eigen_PC

Uncertain

0.23

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.89

M_CAP

Benign

0.021

MetaRNN

Benign

0.17

MetaSVM

Benign

-0.94

MutationAssessor

Benign

0.34

PhyloP100

5.6

PrimateAI

Uncertain

0.59

PROVEAN

Benign

-0.18

REVEL

Benign

0.13

Sift

Benign

0.098

Sift4G

Benign

0.35

Polyphen

0.0080

Vest4

0.62

MutPred

0.14

Loss of catalytic residue at V346 (P = 0.0295)

MVP

0.77

MPC

0.045

ClinPred

0.12

GERP RS

4.9

Varity_R

0.23

gMVP

0.13

Mutation Taster

=80/20

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over