1-160041485-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 1P and 3B. PP2BP4_ModerateBS1_Supporting

The NM_002241.5(KCNJ10):c.1048G>A(p.Gly350Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000161 in 1,614,138 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G350A) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000033 ( 1 hom., cov: 32)

Exomes 𝑓: 0.000014 ( 0 hom. )

Consequence

KCNJ10
NM_002241.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 2.56

Publications

1 publications found

Variant links:

Genes affected

KCNJ10 (HGNC:6256): (potassium inwardly rectifying channel subfamily J member 10) This gene encodes a member of the inward rectifier-type potassium channel family, characterized by having a greater tendency to allow potassium to flow into, rather than out of, a cell. The encoded protein may form a heterodimer with another potassium channel protein and may be responsible for the potassium buffering action of glial cells in the brain. Mutations in this gene have been associated with seizure susceptibility of common idiopathic generalized epilepsy syndromes. [provided by RefSeq, Jul 2008]

KCNJ10 Gene-Disease associations (from GenCC):

EAST syndrome
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics, PanelApp Australia, G2P, Labcorp Genetics (formerly Invitae), ClinGen
Pendred syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
enlarged vestibular aqueduct syndrome
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

KCNJ10 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 14 curated pathogenic missense variants (we use a threshold of 10). The gene has 1 curated benign missense variants. Trascript score misZ: 2.7053 (below the threshold of 3.09). GenCC associations: The gene is linked to EAST syndrome, enlarged vestibular aqueduct syndrome, Pendred syndrome.

BP4

Computational evidence support a benign effect (MetaRNN=0.1602574).

BS1

Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.0000328 (5/152282) while in subpopulation AMR AF = 0.000196 (3/15300). AF 95% confidence interval is 0.0000528. There are 1 homozygotes in GnomAd4. There are 1 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KCNJ10	NM_002241.5 link	c.1048G>A	p.Gly350Arg	missense_variant	Exon 2 of 2	ENST00000644903.1	NP_002232.2	P78508

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KCNJ10	ENST00000644903.1 link	c.1048G>A	p.Gly350Arg	missense_variant	Exon 2 of 2		NM_002241.5	ENSP00000495557.1		P78508

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152164

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000239

AC:

AN:

251358

AF XY:

0.0000221

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.000145

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:

0.0000144

AC:

AN:

1461856

Hom.:

Cov.:

AF XY:

0.0000165

AC XY:

AN XY:

727228

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.000112

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53412

Middle Eastern (MID)

AF:

0.000347

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.0000117

AC:

AN:

1112000

Other (OTH)

AF:

0.0000166

AC:

AN:

60390

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.499

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000328

AC:

AN:

152282

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74458

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41552

American (AMR)

AF:

0.000196

AC:

AN:

15300

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5180

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68022

Other (OTH)

AF:

0.000949

AC:

AN:

2108

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.458

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000658

Hom.:

ExAC

AF:

0.0000247

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

EAST syndrome;C3538946:Autosomal recessive nonsyndromic hearing loss 4

Uncertain:1

May 22, 2024

Fulgent Genetics, Fulgent Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

EAST syndrome

Uncertain:1

Jan 24, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 350 of the KCNJ10 protein (p.Gly350Arg). This variant is present in population databases (rs770453248, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with KCNJ10-related conditions. ClinVar contains an entry for this variant (Variation ID: 411159). 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 not expected to disrupt KCNJ10 protein function with a negative predictive value of 95%. 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.20

BayesDel_addAF

Benign

-0.16

BayesDel_noAF

Benign

-0.21

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.15

T;T;T;T

Eigen

Benign

-0.15

Eigen_PC

Benign

-0.11

FATHMM_MKL

Benign

0.51

LIST_S2

Benign

0.71

.;.;.;T

M_CAP

Benign

0.068

MetaRNN

Benign

0.16

T;T;T;T

MetaSVM

Benign

-0.43

MutationAssessor

Benign

0.69

N;N;N;N

PhyloP100

2.6

PrimateAI

Uncertain

0.73

PROVEAN

Benign

0.45

.;N;.;.

REVEL

Benign

0.24

Sift

Benign

0.041

.;D;.;.

Sift4G

Benign

0.25

.;T;.;.

Polyphen

0.89

P;P;P;P

Vest4

0.18

MutPred

0.37

Gain of MoRF binding (P = 0.0908);Gain of MoRF binding (P = 0.0908);Gain of MoRF binding (P = 0.0908);Gain of MoRF binding (P = 0.0908);

MVP

0.26

MPC

1.1

ClinPred

0.13

GERP RS

4.2

PromoterAI

-0.020

Neutral

(source)

Varity_R

0.068

gMVP

0.54

Mutation Taster

=79/21

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

1-160041485-C-T

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