Variant X-71224204-T-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 3P and 4B. PM1PP3BP4_Strong

The NM_000166.6(GJB1):c.497T>G(p.Val166Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 21)

Exomes 𝑓: 0.00016 ( 0 hom. 0 hem. )

Failed GnomAD Quality Control

Consequence

GJB1
NM_000166.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:2

Conservation

PhyloP100: 8.02

Variant links:

Genes affected

GJB1 (HGNC:4283): (gap junction protein beta 1) This gene encodes a member of the gap junction protein family. The gap junction proteins are membrane-spanning proteins that assemble to form gap junction channels that facilitate the transfer of ions and small molecules between cells. According to sequence similarities at the nucleotide and amino acid levels, the gap junction proteins are divided into two categories, alpha and beta. Mutations in this gene cause X-linked Charcot-Marie-Tooth disease, an inherited peripheral neuropathy. Alternatively spliced transcript variants encoding the same protein have been found for this gene. [provided by RefSeq, Oct 2008]

GJB1 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -1 ACMG points.

PM1

In a chain Gap junction beta-1 protein (size 282) in uniprot entity CXB1_HUMAN there are 4 pathogenic changes around while only 0 benign (100%) in NM_000166.6

PP3

Multiple lines of computational evidence support a deleterious effect 7: AlphaMissense, BayesDel_addAF, BayesDel_noAF, MutationAssessor, phyloP100way_vertebrate, PROVEAN, REVEL [when max_spliceai, FATHMM_MKL, MetaRNN, MutationTaster, PrimateAI was below the threshold]

BP4

Computational evidence support a benign effect (MetaRNN=0.019070834).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
GJB1	NM_000166.6 linkuse as main transcript	c.497T>G	p.Val166Gly	missense_variant	2/2	ENST00000361726.7	NP_000157.1
GJB1	NM_001097642.3 linkuse as main transcript	c.497T>G	p.Val166Gly	missense_variant	2/2		NP_001091111.1
GJB1	XM_011530907.3 linkuse as main transcript	c.497T>G	p.Val166Gly	missense_variant	2/2		XP_011529209.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
GJB1	ENST00000361726.7 linkuse as main transcript	c.497T>G	p.Val166Gly	missense_variant	2/2	1	NM_000166.6	ENSP00000354900	P1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00109

AC:

176

AN:

161923

Hom.:

AF XY:

0.00

AC XY:

AN XY:

54291

show subpopulations

Gnomad AFR exome

AF:

0.00196

Gnomad AMR exome

AF:

0.000833

Gnomad ASJ exome

AF:

0.000142

Gnomad EAS exome

AF:

0.00320

Gnomad SAS exome

AF:

0.000231

Gnomad FIN exome

AF:

0.000965

Gnomad NFE exome

AF:

0.00101

Gnomad OTH exome

AF:

0.000730

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.000164

AC:

178

AN:

1086803

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

356549

show subpopulations

Gnomad4 AFR exome

AF:

0.000422

Gnomad4 AMR exome

AF:

0.00165

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00143

Gnomad4 SAS exome

AF:

0.0000377

Gnomad4 FIN exome

AF:

0.000747

Gnomad4 NFE exome

AF:

0.0000358

Gnomad4 OTH exome

AF:

0.000197

GnomAD4 genome

Cov.:

Alfa

AF:

0.00000949

Hom.:

ExAC

AF:

0.00327

AC:

396

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Athena Diagnostics

Dec 23, 2016

- -

Charcot-Marie-Tooth disease

Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

Natera, Inc.

Oct 28, 2019

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.83

BayesDel_addAF

Pathogenic

0.45

BayesDel_noAF

Pathogenic

0.41

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.97

D;D;D;D;D

FATHMM_MKL

Uncertain

0.96

LIST_S2

Benign

0.63

.;.;.;.;T

MetaRNN

Benign

0.019

T;T;T;T;T

MetaSVM

Pathogenic

1.0

MutationAssessor

Pathogenic

3.4

M;M;M;M;M

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Benign

0.40

PROVEAN

Pathogenic

-6.7

D;.;D;.;D

REVEL

Pathogenic

0.86

Sift

Uncertain

0.0070

D;.;D;.;D

Sift4G

Uncertain

0.0040

D;.;D;.;D

Polyphen

1.0

D;D;D;D;D

Vest4

0.57

MVP

0.93

MPC

2.1

ClinPred

0.072

GERP RS

3.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.90

gMVP

1.0

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