Genetic Variant NM_001294338.2:c.1480A>C (chr1-155263238-T-G) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001294338.2(CLK2):c.1480A>C(p.Ser494Arg) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,406 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S494G) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

CLK2
NM_001294338.2 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 5.09

Publications

0 publications found

Variant links:

Genes affected

CLK2 (HGNC:2069): (CDC like kinase 2) This gene encodes a dual specificity protein kinase that phosphorylates serine/threonine and tyrosine-containing substrates. Activity of this protein regulates serine- and arginine-rich (SR) proteins of the spliceosomal complex, thereby influencing alternative transcript splicing. Chromosomal translocations have been characterized between this locus and the PAFAH1B3 (platelet-activating factor acetylhydrolase 1b, catalytic subunit 3 (29kDa)) gene on chromosome 19, resulting in the production of a fusion protein. Note that this gene is distinct from the TELO2 gene (GeneID:9894), which shares the CLK2 alias, but encodes a protein that is involved in telomere length regulation. There is a pseudogene for this gene on chromosome 7. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jun 2014]

CLK2 links:

ENSG00000303088 (HGNC:):

ENSG00000303088 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.18609637).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001294338.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CLK2	NM_001294338.2	MANE Select	c.1480A>C	p.Ser494Arg	missense	Exon 13 of 13	NP_001281267.1	P49760-1
CLK2	NM_003993.4		c.1477A>C	p.Ser493Arg	missense	Exon 13 of 13	NP_003984.2
CLK2	NM_001363704.2		c.1474A>C	p.Ser492Arg	missense	Exon 13 of 13	NP_001350633.1	B1AVT0

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CLK2	ENST00000368361.9	TSL:1 MANE Select	c.1480A>C	p.Ser494Arg	missense	Exon 13 of 13	ENSP00000357345.4	P49760-1
CLK2	ENST00000361168.9	TSL:1	c.1477A>C	p.Ser493Arg	missense	Exon 13 of 13	ENSP00000354856.5	P49760-3
CLK2	ENST00000476983.5	TSL:1	n.1521A>C		non_coding_transcript_exon	Exon 12 of 12

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000399

AC:

AN:

250790

AF XY:

0.00000738

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461406

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726990

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33476

American (AMR)

AF:

0.00

AC:

AN:

44700

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26120

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86210

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53288

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5612

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111942

Other (OTH)

AF:

0.00

AC:

AN:

60358

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.66

BayesDel_addAF

Benign

-0.11

BayesDel_noAF

Benign

-0.30

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.10

Eigen

Benign

-0.034

Eigen_PC

Benign

0.16

FATHMM_MKL

Uncertain

0.93

M_CAP

Benign

0.014

MetaRNN

Benign

0.19

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.5

PhyloP100

5.1

PrimateAI

Uncertain

0.66

PROVEAN

Benign

-1.4

REVEL

Benign

0.15

Sift

Uncertain

0.0060

Sift4G

Uncertain

0.013

Polyphen

0.079

Vest4

0.37

MutPred

0.33

Loss of phosphorylation at S494 (P = 0.0112)

MVP

0.38

MPC

0.94

ClinPred

0.59

GERP RS

5.1

Varity_R

0.27

gMVP

0.50

Mutation Taster

=63/37

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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over