Variant 1-110211995-G-C 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_001039574.3(KCNC4):c.496G>C(p.Gly166Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000123 in 1,608,254 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000079 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00013 ( 0 hom. )

Consequence

KCNC4
NM_001039574.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.17

Variant links:

Genes affected

KCNC4 (HGNC:6236): (potassium voltage-gated channel subfamily C member 4) The Shaker gene family of Drosophila encodes components of voltage-gated potassium channels and is comprised of four subfamilies. Based on sequence similarity, this gene is similar to the Shaw subfamily. The protein encoded by this gene belongs to the delayed rectifier class of channel proteins and is an integral membrane protein that mediates the voltage-dependent potassium ion permeability of excitable membranes. It generates atypical voltage-dependent transient current that may be important for neuronal excitability. Multiple transcript variants have been found for this gene. [provided by RefSeq, Jul 2010]

KCNC4 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=0.24209222).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KCNC4	NM_001039574.3 linkuse as main transcript	c.496G>C	p.Gly166Arg	missense_variant	1/4	ENST00000438661.3	NP_001034663.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KCNC4	ENST00000438661.3 linkuse as main transcript	c.496G>C	p.Gly166Arg	missense_variant	1/4	1	NM_001039574.3	ENSP00000393655	P1	Q03721-3

Frequencies

GnomAD3 genomes

AF:

0.0000789

AC:

AN:

152124

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:

0.000176

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000806

AC:

AN:

235620

Hom.:

AF XY:

0.000108

AC XY:

AN XY:

129688

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:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000183

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000128

AC:

186

AN:

1456130

Hom.:

Cov.:

AF XY:

0.000116

AC XY:

AN XY:

724172

show subpopulations

Gnomad4 AFR exome

AF:

0.0000601

Gnomad4 AMR exome

AF:

0.0000226

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000163

Gnomad4 OTH exome

AF:

0.0000333

GnomAD4 genome

AF:

0.0000789

AC:

AN:

152124

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74314

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000176

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000304

Hom.:

Bravo

AF:

0.0000982

ExAC

AF:

0.000125

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 16, 2023

The c.496G>C (p.G166R) alteration is located in exon 1 (coding exon 1) of the KCNC4 gene. This alteration results from a G to C substitution at nucleotide position 496, causing the glycine (G) at amino acid position 166 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.21

BayesDel_addAF

Benign

-0.091

BayesDel_noAF

Benign

-0.090

CADD

Uncertain

DANN

Benign

0.90

DEOGEN2

Benign

0.045

T;.;.

Eigen

Benign

-0.049

Eigen_PC

Benign

0.053

FATHMM_MKL

Uncertain

0.86

LIST_S2

Benign

0.84

T;T;T

M_CAP

Pathogenic

0.66

MetaRNN

Benign

0.24

T;T;T

MetaSVM

Uncertain

0.45

MutationAssessor

Benign

0.55

N;.;N

MutationTaster

Benign

0.82

D;D;D

PrimateAI

Pathogenic

0.81

PROVEAN

Benign

-0.74

N;N;N

REVEL

Uncertain

0.33

Sift

Benign

0.35

T;T;T

Sift4G

Benign

0.35

T;T;T

Polyphen

0.27

B;.;P

Vest4

0.29

MutPred

0.28

Loss of glycosylation at S163 (P = 0.0385);Loss of glycosylation at S163 (P = 0.0385);Loss of glycosylation at S163 (P = 0.0385);

MVP

1.0

MPC

1.3

ClinPred

0.090

GERP RS

4.2

Varity_R

0.13

gMVP

0.60

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

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over