12-908757-A-G

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_213655.5(WNK1):c.7870A>G(p.Ser2624Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000724 in 1,381,840 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: not found (cov: 31)

Exomes 𝑓: 7.2e-7 ( 0 hom. )

Consequence

WNK1
NM_213655.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 8.40

Publications

2 publications found

Variant links:

Genes affected

WNK1 (HGNC:14540): (WNK lysine deficient protein kinase 1) This gene encodes a member of the WNK subfamily of serine/threonine protein kinases. The encoded protein may be a key regulator of blood pressure by controlling the transport of sodium and chloride ions. Mutations in this gene have been associated with pseudohypoaldosteronism type II and hereditary sensory neuropathy type II. Alternatively spliced transcript variants encoding different isoforms have been described but the full-length nature of all of them has yet to be determined.[provided by RefSeq, May 2010]

WNK1 Gene-Disease associations (from GenCC):

neuropathy, hereditary sensory and autonomic, type 2A
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, G2P, Ambry Genetics
pseudohypoaldosteronism type 2C
Inheritance: AD Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
hereditary sensory and autonomic neuropathy type 2
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

WNK1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.2644811).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
WNK1	NM_213655.5 link	c.7870A>G	p.Ser2624Gly	missense_variant	Exon 28 of 28	ENST00000340908.9	NP_998820.3	Q9H4A3-5
WNK1	NM_018979.4 link	c.7114A>G	p.Ser2372Gly	missense_variant	Exon 28 of 28	ENST00000315939.11	NP_061852.3	Q9H4A3-1A5D8Z4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
WNK1	ENST00000340908.9 link	c.7870A>G	p.Ser2624Gly	missense_variant	Exon 28 of 28	5	NM_213655.5	ENSP00000341292.5		Q9H4A3-5
WNK1	ENST00000315939.11 link	c.7114A>G	p.Ser2372Gly	missense_variant	Exon 28 of 28	1	NM_018979.4	ENSP00000313059.6		Q9H4A3-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000398

AC:

AN:

251454

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

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:

7.24e-7

AC:

AN:

1381840

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

687214

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

30930

American (AMR)

AF:

0.0000237

AC:

AN:

42166

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

23002

East Asian (EAS)

AF:

0.00

AC:

AN:

32906

South Asian (SAS)

AF:

0.00

AC:

AN:

85610

European-Finnish (FIN)

AF:

0.00

AC:

AN:

46136

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5340

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1060852

Other (OTH)

AF:

0.00

AC:

AN:

54898

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

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

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Pseudohypoaldosteronism type 2C;C2752089:Neuropathy, hereditary sensory and autonomic, type 2A

Uncertain:1

Jun 21, 2018

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain. This variant has not been reported in the literature in individuals with WNK1-related disease. This variant is present in population databases (rs771383347, ExAC 0.009%). This sequence change replaces serine with glycine at codon 2372 of the WNK1 protein (p.Ser2372Gly). The serine residue is highly conserved and there is a small physicochemical difference between serine and glycine. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.41

BayesDel_addAF

Uncertain

0.079

BayesDel_noAF

Uncertain

-0.040

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.11

T;.;T;.;.

Eigen

Pathogenic

0.71

Eigen_PC

Pathogenic

0.72

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.96

D;D;D;D;D

M_CAP

Benign

0.049

MetaRNN

Benign

0.26

T;T;T;T;T

MetaSVM

Uncertain

0.25

MutationAssessor

Benign

1.6

.;.;L;.;.

PhyloP100

8.4

PrimateAI

Uncertain

0.72

PROVEAN

Uncertain

-3.1

D;.;N;.;N

REVEL

Uncertain

0.38

Sift

Uncertain

0.0010

D;.;D;.;D

Sift4G

Benign

0.24

T;.;T;T;T

Polyphen

1.0

D;.;D;.;.

Vest4

0.41

MutPred

0.14

.;.;Gain of relative solvent accessibility (P = 0.0082);.;.;

MVP

0.56

MPC

0.53

ClinPred

0.89

GERP RS

5.2

Varity_R

0.43

gMVP

0.33

Mutation Taster

=57/43

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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12-908757-A-G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over