Variant 1-34757455-G-A 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_005268.4(GJB5):c.125G>A(p.Arg42His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000379 in 1,614,044 control chromosomes in the GnomAD database, including 1 homozygotes. 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 0.00023 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00039 ( 1 hom. )

Consequence

GJB5
NM_005268.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.76

Variant links:

Genes affected

GJB5 (HGNC:4287): (gap junction protein beta 5) This gene encodes a member of the beta-type (group I) connexin family. The encoded protein is a gap junction protein involved in intercellular communication related to epidermal differentiation and environmental sensing. This gene has been linked to non-small cell lung cancer. [provided by RefSeq, Nov 2012]

GJB5 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:

Genome browser will be placed here

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=0.20399243).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GJB5	NM_005268.4 linkuse as main transcript	c.125G>A	p.Arg42His	missense_variant	2/2	ENST00000338513.1
GJB5	XM_005270751.4 linkuse as main transcript	c.125G>A	p.Arg42His	missense_variant	2/2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GJB5	ENST00000338513.1 linkuse as main transcript	c.125G>A	p.Arg42His	missense_variant	2/2	1	NM_005268.4	P1
SMIM12	ENST00000426886.1 linkuse as main transcript	c.208-39046C>T		intron_variant, NMD_transcript_variant		1

Frequencies

GnomAD3 genomes

AF:

0.000230

AC:

AN:

152154

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000377

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000426

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000231

AC:

AN:

251450

Hom.:

AF XY:

0.000250

AC XY:

AN XY:

135910

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.000231

Gnomad NFE exome

AF:

0.000413

Gnomad OTH exome

AF:

0.000652

GnomAD4 exome

AF:

0.000395

AC:

577

AN:

1461890

Hom.:

Cov.:

AF XY:

0.000344

AC XY:

250

AN XY:

727244

show subpopulations

Gnomad4 AFR exome

AF:

0.000149

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000580

Gnomad4 FIN exome

AF:

0.000412

Gnomad4 NFE exome

AF:

0.000470

Gnomad4 OTH exome

AF:

0.000348

GnomAD4 genome

AF:

0.000230

AC:

AN:

152154

Hom.:

Cov.:

AF XY:

0.000188

AC XY:

AN XY:

74322

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000655

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000377

Gnomad4 NFE

AF:

0.000426

Gnomad4 OTH

AF:

0.000478

Alfa

AF:

0.000306

Hom.:

Bravo

AF:

0.000178

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000329

AC:

EpiCase

AF:

0.000273

EpiControl

AF:

0.000178

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

Apr 07, 2022

The c.125G>A (p.R42H) alteration is located in exon 2 (coding exon 1) of the GJB5 gene. This alteration results from a G to A substitution at nucleotide position 125, causing the arginine (R) at amino acid position 42 to be replaced by a histidine (H). 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

0.068

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Benign

-0.17

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Uncertain

0.62

Eigen

Benign

-0.65

Eigen_PC

Benign

-0.62

FATHMM_MKL

Benign

0.40

LIST_S2

Benign

0.80

M_CAP

Uncertain

0.15

MetaRNN

Benign

0.20

MetaSVM

Uncertain

0.66

MutationAssessor

Uncertain

2.3

MutationTaster

Benign

1.0

PrimateAI

Benign

0.37

PROVEAN

Benign

-1.2

REVEL

Uncertain

0.41

Sift

Benign

0.29

Sift4G

Benign

0.29

Polyphen

0.034

Vest4

0.16

MVP

0.82

MPC

0.17

ClinPred

0.064

GERP RS

0.13

Varity_R

0.035

gMVP

0.51

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