rs398123042

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Likely pathogenic. The variant received 8 ACMG points: 8P and 0B. PM2PM5PP3_ModeratePP5_Moderate

The NM_002246.3(KCNK3):c.544G>A(p.Glu182Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000131 in 152,202 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E182Q) has been classified as Likely pathogenic.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)

Consequence

KCNK3
NM_002246.3 missense

Scores

Clinical Significance

Likely pathogenic criteria provided, single submitter P:2

Conservation

PhyloP100: 9.92

Publications

15 publications found

Variant links:

Genes affected

KCNK3 (HGNC:6278): (potassium two pore domain channel subfamily K member 3) This gene encodes a member of the superfamily of potassium channel proteins that contain two pore-forming P domains. The encoded protein is an outwardly rectifying channel that is sensitive to changes in extracellular pH and is inhibited by extracellular acidification. Also referred to as an acid-sensitive potassium channel, it is activated by the anesthetics halothane and isoflurane. Although three transcripts are detected in northern blots, there is currently no sequence available to confirm transcript variants for this gene. [provided by RefSeq, Aug 2008]

KCNK3 Gene-Disease associations (from GenCC):

pulmonary arterial hypertension
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
pulmonary hypertension, primary, 4
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
heritable pulmonary arterial hypertension
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

KCNK3 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 8 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr2-26727927-G-C is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 813010.Status of the report is no_assertion_criteria_provided, 0 stars.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.921

PP5

Variant 2-26727927-G-A is Pathogenic according to our data. Variant chr2-26727927-G-A is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 60482.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KCNK3	NM_002246.3 link	c.544G>A	p.Glu182Lys	missense_variant	Exon 2 of 2	ENST00000302909.4	NP_002237.1	O14649
KCNK3	XM_005264293.3 link	c.214G>A	p.Glu72Lys	missense_variant	Exon 2 of 2		XP_005264350.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KCNK3	ENST00000302909.4 link	c.544G>A	p.Glu182Lys	missense_variant	Exon 2 of 2	1	NM_002246.3	ENSP00000306275.3		O14649

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152202

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152202

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74360

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41454

American (AMR)

AF:

0.00

AC:

AN:

15284

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5198

South Asian (SAS)

AF:

0.00

AC:

AN:

4838

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68018

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.650

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:

0.0000682

Hom.:

Bravo

AF:

0.00000756

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Pulmonary hypertension, primary, 4

Pathogenic:2

Sep 24, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 182 of the KCNK3 protein (p.Glu182Lys). This variant is present in population databases (rs398123042, gnomAD 0.007%). This missense change has been observed in individuals with pulmonary arterial hypertension (PMID: 23883380, 29743074; internal data). ClinVar contains an entry for this variant (Variation ID: 60482). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is expected to disrupt KCNK3 protein function with a positive predictive value of 80%. Experimental studies have shown that this missense change affects KCNK3 function (PMID: 23883380, 28889099). In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. -

Jul 25, 2013

OMIM

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:literature only

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.99

BayesDel_addAF

Pathogenic

0.32

BayesDel_noAF

Pathogenic

0.22

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.90

D;D

Eigen

Pathogenic

1.1

Eigen_PC

Pathogenic

0.98

FATHMM_MKL

Uncertain

0.96

LIST_S2

Pathogenic

0.99

D;D

M_CAP

Uncertain

0.25

MetaRNN

Pathogenic

0.92

D;D

MetaSVM

Uncertain

0.029

MutationAssessor

Pathogenic

3.9

.;H

PhyloP100

9.9

PrimateAI

Uncertain

0.77

PROVEAN

Uncertain

-3.8

.;D

REVEL

Uncertain

0.59

Sift

Uncertain

0.0010

.;D

Sift4G

Uncertain

0.0020

D;D

Polyphen

1.0

.;D

Vest4

0.98

MutPred

0.69

.;Gain of methylation at E182 (P = 0.0092);

MVP

0.72

ClinPred

1.0

GERP RS

5.3

Varity_R

0.97

gMVP

1.0

Mutation Taster

=15/85

disease causing

(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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over