Variant 1-34785119-C-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 4P and 1B. PM1PM2BP4

The NM_024009.3(GJB3):c.357C>A(p.Asn119Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,846 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. N119N) has been classified as Benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

GJB3
NM_024009.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.03

Variant links:

Genes affected

GJB3 (HGNC:4285): (gap junction protein beta 3) This gene is a member of the connexin gene family. The encoded protein is a component of gap junctions, which are composed of arrays of intercellular channels that provide a route for the diffusion of low molecular weight materials from cell to cell. Mutations in this gene can cause non-syndromic deafness or erythrokeratodermia variabilis, a skin disorder. Alternative splicing results in multiple transcript variants encoding the same protein. [provided by RefSeq, Jul 2008]

GJB3 links:

SMIM12 (HGNC:25154): (small integral membrane protein 12) Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

SMIM12 links:

(HGNC:):

links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM1

In a chain Gap junction beta-3 protein (size 269) in uniprot entity CXB3_HUMAN there are 17 pathogenic changes around while only 4 benign (81%) in NM_024009.3

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.37231654).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
GJB3	NM_024009.3 linkuse as main transcript	c.357C>A	p.Asn119Lys	missense_variant	2/2	ENST00000373366.3	NP_076872.1
GJB3	NM_001005752.2 linkuse as main transcript	c.357C>A	p.Asn119Lys	missense_variant	2/2		NP_001005752.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris
GJB3	ENST00000373366.3 linkuse as main transcript	c.357C>A	p.Asn119Lys	missense_variant	2/2	1	NM_024009.3	ENSP00000362464	P1
GJB3	ENST00000373362.3 linkuse as main transcript	c.357C>A	p.Asn119Lys	missense_variant	2/2	1		ENSP00000362460	P1
SMIM12	ENST00000426886.1 linkuse as main transcript	c.208-66710G>T		intron_variant, NMD_transcript_variant		1		ENSP00000429902
	ENST00000542839.1 linkuse as main transcript	n.110+2869G>T		intron_variant, non_coding_transcript_variant		5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000399

AC:

AN:

250572

Hom.:

AF XY:

0.00000738

AC XY:

AN XY:

135420

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:

0.00000885

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461846

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727226

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

8.99e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.49

BayesDel_addAF

Benign

-0.014

BayesDel_noAF

Benign

-0.26

CADD

Benign

DANN

Benign

0.96

DEOGEN2

Uncertain

0.76

D;D

Eigen

Benign

-0.25

Eigen_PC

Benign

-0.31

FATHMM_MKL

Uncertain

0.82

LIST_S2

Uncertain

0.87

.;D

M_CAP

Uncertain

0.13

MetaRNN

Benign

0.37

T;T

MetaSVM

Uncertain

0.39

MutationAssessor

Benign

1.9

L;L

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.35

PROVEAN

Uncertain

-3.8

D;D

REVEL

Uncertain

0.41

Sift

Benign

0.12

T;T

Sift4G

Benign

0.20

T;T

Polyphen

0.53

P;P

Vest4

0.26

MutPred

0.38

Gain of ubiquitination at N119 (P = 0.0369);Gain of ubiquitination at N119 (P = 0.0369);

MVP

0.92

MPC

0.27

ClinPred

0.37

GERP RS

2.8

Varity_R

0.26

gMVP

0.81

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