rs140538607

Variant names:

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_001371727.1(GABRB2):c.984C>T(p.Tyr328Tyr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000226 in 1,614,180 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0012 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00012 ( 0 hom. )

Consequence

GABRB2
NM_001371727.1 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 3.56

Variant links:

Genes affected

GABRB2 (HGNC:4082): (gamma-aminobutyric acid type A receptor subunit beta2) The gamma-aminobutyric acid (GABA) A receptor is a multisubunit chloride channel that mediates the fastest inhibitory synaptic transmission in the central nervous system. This gene encodes GABA A receptor, beta 2 subunit. It is mapped to chromosome 5q34 in a cluster comprised of genes encoding alpha 1 and gamma 2 subunits of the GABA A receptor. Alternative splicing of this gene generates 2 transcript variants, differing by a 114 bp insertion. [provided by RefSeq, Jul 2008]

GABRB2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.49).

BP6

Variant 5-161330976-G-A is Benign according to our data. Variant chr5-161330976-G-A is described in ClinVar as [Benign]. Clinvar id is 388364.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=3.56 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00123 (188/152292) while in subpopulation AFR AF= 0.00419 (174/41570). AF 95% confidence interval is 0.00368. There are 1 homozygotes in gnomad4. There are 86 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High AC in GnomAd4 at 188 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GABRB2	NM_001371727.1 link	c.984C>T	p.Tyr328Tyr	synonymous_variant	Exon 8 of 10	ENST00000393959.6	NP_001358656.1
GABRB2	NM_021911.3 link	c.984C>T	p.Tyr328Tyr	synonymous_variant	Exon 9 of 11		NP_068711.1	P47870-2
GABRB2	NM_000813.3 link	c.984C>T	p.Tyr328Tyr	synonymous_variant	Exon 9 of 10		NP_000804.1	P47870-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GABRB2	ENST00000393959.6 link	c.984C>T	p.Tyr328Tyr	synonymous_variant	Exon 8 of 10	1	NM_001371727.1	ENSP00000377531.1		P47870-2

Frequencies

GnomAD3 genomes

AF:

0.00121

AC:

184

AN:

152174

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00410

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000458

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000579

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00144

GnomAD3 exomes

AF:

0.000387

AC:

AN:

250630

Hom.:

AF XY:

0.000288

AC XY:

AN XY:

135596

show subpopulations

Gnomad AFR exome

AF:

0.00486

Gnomad AMR exome

AF:

0.000231

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000435

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000121

AC:

177

AN:

1461888

Hom.:

Cov.:

AF XY:

0.000110

AC XY:

AN XY:

727244

show subpopulations

Gnomad4 AFR exome

AF:

0.00412

Gnomad4 AMR exome

AF:

0.000201

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000126

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000360

Gnomad4 OTH exome

AF:

0.000265

GnomAD4 genome

AF:

0.00123

AC:

188

AN:

152292

Hom.:

Cov.:

AF XY:

0.00116

AC XY:

AN XY:

74456

show subpopulations

Gnomad4 AFR

AF:

0.00419

Gnomad4 AMR

AF:

0.000458

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000580

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00142

Alfa

AF:

0.000916

Hom.:

Bravo

AF:

0.00165

Asia WGS

AF:

0.000866

AC:

AN:

3478

ClinVar

Significance: Benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

GABRB2-related disorder

Benign:1

Jul 18, 2019

PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

not provided

Benign:1

May 22, 2019

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Intellectual disability

Benign:1

Jan 19, 2025

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

BayesDel_noAF

Benign

-0.49

CADD

Benign

7.5

DANN

Benign

0.43

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