Genetic Variant GABRE:p.Arg393Gly (chrX-151955045-G-C) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_004961.4(GABRE):c.1177C>G(p.Arg393Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000833 in 1,200,852 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 1 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000089 ( 0 hom., 0 hem., cov: 23)

Exomes 𝑓: 0.0000083 ( 0 hom. 1 hem. )

Consequence

GABRE
NM_004961.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.294

Variant links:

Genes affected

GABRE (HGNC:4085): (gamma-aminobutyric acid type A receptor subunit epsilon) The product of this gene belongs to the ligand-gated ionic channel (TC 1.A.9) family. It encodes the gamma-aminobutyric acid (GABA) A receptor which is a multisubunit chloride channel that mediates the fastest inhibitory synaptic transmission in the central nervous system. This gene encodes an epsilon subunit. It is mapped to chromosome Xq28 in a cluster comprised of genes encoding alpha 3, beta 4 and theta subunits of the same receptor. Alternatively spliced transcript variants have been identified, but only one is thought to encode a protein. [provided by RefSeq, Oct 2008]

GABRE links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GABRE	NM_004961.4 link	c.1177C>G	p.Arg393Gly	missense_variant	Exon 9 of 9	ENST00000370328.4	NP_004952.2	P78334-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GABRE	ENST00000370328.4 link	c.1177C>G	p.Arg393Gly	missense_variant	Exon 9 of 9	1	NM_004961.4	ENSP00000359353.3		P78334-1

Frequencies

GnomAD3 genomes

AF:

0.00000894

AC:

AN:

111899

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

34063

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000188

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000123

AC:

AN:

162154

Hom.:

AF XY:

0.0000200

AC XY:

AN XY:

50014

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:

0.0000282

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000826

AC:

AN:

1088953

Hom.:

Cov.:

AF XY:

0.00000281

AC XY:

AN XY:

355493

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:

0.0000107

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000894

AC:

AN:

111899

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

34063

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000188

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.00000825

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 30, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1177C>G (p.R393G) alteration is located in exon 9 (coding exon 9) of the GABRE gene. This alteration results from a C to G substitution at nucleotide position 1177, causing the arginine (R) at amino acid position 393 to be replaced by a glycine (G). 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

0.11

BayesDel_addAF

Benign

-0.14

BayesDel_noAF

Benign

-0.44

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.28

FATHMM_MKL

Benign

0.36

LIST_S2

Benign

0.48

M_CAP

Pathogenic

0.52

MetaRNN

Benign

0.33

MetaSVM

Benign

-0.63

MutationAssessor

Benign

1.8

PrimateAI

Benign

0.45

PROVEAN

Benign

-1.5

REVEL

Benign

0.28

Sift

Benign

0.28

Sift4G

Benign

0.49

Polyphen

0.91

Vest4

0.12

MutPred

0.54

Loss of helix (P = 3e-04);

MVP

0.96

MPC

0.14

ClinPred

0.31

GERP RS

3.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.12

gMVP

0.28

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.42

Details are displayed if max score is > 0.2

DS_AG_spliceai

0.42

Position offset: -1

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