Variant 2-26727806-C-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_002246.3(KCNK3):c.423C>G(p.His141Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000206 in 1,458,916 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in same amino acid change has been previously reported as Likely benignin Lovd.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

KCNK3
NM_002246.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.66

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 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.25232494).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KCNK3	NM_002246.3 linkuse as main transcript	c.423C>G	p.His141Gln	missense_variant	2/2	ENST00000302909.4	NP_002237.1
KCNK3	XM_005264293.3 linkuse as main transcript	c.93C>G	p.His31Gln	missense_variant	2/2		XP_005264350.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KCNK3	ENST00000302909.4 linkuse as main transcript	c.423C>G	p.His141Gln	missense_variant	2/2	1	NM_002246.3	ENSP00000306275	P1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000400

AC:

AN:

249766

Hom.:

AF XY:

0.00000741

AC XY:

AN XY:

135012

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 SAS exome

AF:

0.0000329

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000206

AC:

AN:

1458916

Hom.:

Cov.:

AF XY:

0.00000276

AC XY:

AN XY:

725300

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000349

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.0000165

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Benign

-0.46

CADD

Benign

DANN

Benign

0.95

DEOGEN2

Benign

0.30

T;T

Eigen

Benign

-0.13

Eigen_PC

Benign

0.017

FATHMM_MKL

Uncertain

0.86

LIST_S2

Benign

0.59

T;T

M_CAP

Benign

0.0092

MetaRNN

Benign

0.25

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.7

.;L

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.59

PROVEAN

Benign

-1.5

.;N

REVEL

Benign

0.059

Sift

Benign

0.22

.;T

Sift4G

Benign

0.28

T;T

Polyphen

0.040

.;B

Vest4

0.49

MutPred

0.36

.;Loss of disorder (P = 0.1492);

MVP

0.41

ClinPred

0.55

GERP RS

4.4

Varity_R

0.58

gMVP

0.93

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

LitVar

Other links and lift over