rs121908851

Positions:

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 3P and 1B. PM1PP5BS2_Supporting

The NM_024009.3(GJB3):c.497A>G(p.Asn166Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000753 in 1,461,710 control chromosomes in the GnomAD database, with no homozygous occurrence. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000075 ( 0 hom. )

Consequence

GJB3
NM_024009.3 missense

Scores

Clinical Significance

Pathogenic no assertion criteria provided P:1

Conservation

PhyloP100: 0.803

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 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

PP5

Variant 1-34785259-A-G is Pathogenic according to our data. Variant chr1-34785259-A-G is described in ClinVar as [Pathogenic]. Clinvar id is 6492.Status of the report is no_assertion_criteria_provided, 0 stars. Variant chr1-34785259-A-G is described in Lovd as [Pathogenic].

BS2

High AC in GnomAdExome4 at 11 AD,Digenic gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
GJB3	NM_024009.3 linkuse as main transcript	c.497A>G	p.Asn166Ser	missense_variant	2/2	ENST00000373366.3	NP_076872.1
GJB3	NM_001005752.2 linkuse as main transcript	c.497A>G	p.Asn166Ser	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.497A>G	p.Asn166Ser	missense_variant	2/2	1	NM_024009.3	ENSP00000362464	P1
GJB3	ENST00000373362.3 linkuse as main transcript	c.497A>G	p.Asn166Ser	missense_variant	2/2	1		ENSP00000362460	P1
SMIM12	ENST00000426886.1 linkuse as main transcript	c.208-66850T>C		intron_variant, NMD_transcript_variant		1		ENSP00000429902
	ENST00000542839.1 linkuse as main transcript	n.110+2729T>C		intron_variant, non_coding_transcript_variant		5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000796

AC:

AN:

251358

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135868

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS 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:

0.00000753

AC:

AN:

1461710

Hom.:

Cov.:

AF XY:

0.00000688

AC XY:

AN XY:

727154

show subpopulations

Gnomad4 AFR exome

AF:

0.0000896

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000504

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000360

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000237

Hom.:

Bravo

AF:

0.0000113

ExAC

AF:

0.00000824

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

Deafness, digenic, GJB2/GJB3

Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Feb 01, 2009

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.066

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.36

CADD

Benign

DANN

Benign

0.57

DEOGEN2

Benign

0.39

T;T

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.15

LIST_S2

Benign

0.66

.;T

M_CAP

Benign

0.059

MetaRNN

Uncertain

0.72

D;D

MetaSVM

Uncertain

-0.16

MutationAssessor

Benign

-0.47

N;N

MutationTaster

Benign

7.4e-8

A;A

PrimateAI

Benign

0.25

PROVEAN

Benign

0.010

N;N

REVEL

Uncertain

0.35

Sift

Benign

0.11

T;T

Sift4G

Benign

0.37

T;T

Polyphen

0.0

B;B

Vest4

0.63

MutPred

0.51

Loss of sheet (P = 0.0817);Loss of sheet (P = 0.0817);

MVP

0.59

MPC

0.054

ClinPred

0.060

GERP RS

-2.3

Varity_R

0.046

gMVP

0.45

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