Genetic Variant GJD2:p.Gly132Ala (chr15-34753049-C-G) – ACMG Classification: Benign (-16 pts)

Variant summary

Our verdict is Benign. The variant received -16 ACMG points: 0P and 16B. BP4_StrongBP6_Very_StrongBS2

The NM_020660.3(GJD2):c.395G>C(p.Gly132Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000769 in 1,614,060 control chromosomes in the GnomAD database, including 11 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0042 ( 6 hom., cov: 32)

Exomes 𝑓: 0.00041 ( 5 hom. )

Consequence

GJD2
NM_020660.3 missense

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: 0.871

Publications

2 publications found

Variant links:

Genes affected

GJD2 (HGNC:19154): (gap junction protein delta 2) This gene encodes a member of the connexin protein family. Connexins are gap junction proteins which are arranged in groups of 6 around a central pore to form a connexon, a component of the gap junction intercellular channel. The channels formed by this protein allow cationic molecule exchange between human beta cells and may function in the regulation of insulin secretion. [provided by RefSeq, Oct 2012]

GJD2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -16 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0065503716).

BP6

Variant 15-34753049-C-G is Benign according to our data. Variant chr15-34753049-C-G is described in ClinVar as [Benign]. Clinvar id is 715052.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS2

High Homozygotes in GnomAd4 at 6 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GJD2	NM_020660.3 link	c.395G>C	p.Gly132Ala	missense_variant	Exon 2 of 2	ENST00000290374.5	NP_065711.1	Q9UKL4
GJD2	XM_017022438.2 link	c.242G>C	p.Gly81Ala	missense_variant	Exon 2 of 2		XP_016877927.1	A0A654IE23

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GJD2	ENST00000290374.5 link	c.395G>C	p.Gly132Ala	missense_variant	Exon 2 of 2	1	NM_020660.3	ENSP00000290374.4		Q9UKL4

Frequencies

GnomAD3 genomes

AF:

0.00423

AC:

644

AN:

152158

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0149

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00124

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:

0.0000588

Gnomad OTH

AF:

0.00144

GnomAD2 exomes

AF:

0.00108

AC:

271

AN:

251180

AF XY:

0.000744

show subpopulations

Gnomad AFR exome

AF:

0.0153

Gnomad AMR exome

AF:

0.000578

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000880

Gnomad OTH exome

AF:

0.000490

GnomAD4 exome

AF:

0.000411

AC:

601

AN:

1461784

Hom.:

Cov.:

AF XY:

0.000370

AC XY:

269

AN XY:

727208

show subpopulations

African (AFR)

AF:

0.0152

AC:

509

AN:

33480

American (AMR)

AF:

0.000626

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53346

Middle Eastern (MID)

AF:

0.00104

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000135

AC:

AN:

1111982

Other (OTH)

AF:

0.000695

AC:

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.489

Heterozygous variant carriers

126

168

210

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00421

AC:

641

AN:

152276

Hom.:

Cov.:

AF XY:

0.00424

AC XY:

316

AN XY:

74466

show subpopulations

African (AFR)

AF:

0.0148

AC:

615

AN:

41546

American (AMR)

AF:

0.00124

AC:

AN:

15306

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.00

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10610

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000588

AC:

AN:

68022

Other (OTH)

AF:

0.00142

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.496

Heterozygous variant carriers

127

159

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.000671

Hom.:

Bravo

AF:

0.00450

ESP6500AA

AF:

0.0139

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.00134

AC:

163

Asia WGS

AF:

0.00144

AC:

AN:

3478

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Breakthrough Genomics, Breakthrough Genomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Jun 18, 2018

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.079

BayesDel_addAF

Benign

-0.30

BayesDel_noAF

Benign

-0.19

CADD

Benign

(source)

DANN

Benign

0.71

DEOGEN2

Benign

0.41

Eigen

Benign

-0.54

Eigen_PC

Benign

-0.34

FATHMM_MKL

Benign

0.41

LIST_S2

Benign

0.64

MetaRNN

Benign

0.0066

MetaSVM

Uncertain

-0.072

MutationAssessor

Benign

0.0

PhyloP100

0.87

PrimateAI

Benign

0.33

PROVEAN

Benign

-0.090

REVEL

Benign

0.25

Sift

Benign

0.49

Sift4G

Benign

0.79

Polyphen

0.030

Vest4

0.26

MVP

0.85

MPC

1.0

ClinPred

0.017

GERP RS

2.4

Varity_R

0.069

gMVP

0.24

Mutation Taster

=95/5

polymorphism

(source)

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

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15-34753049-C-G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over