rs6891988

chr5-161333001-C-T

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_001371727.1(GABRB2):c.832+1751G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0549 in 152,176 control chromosomes in the GnomAD database, including 633 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.055 (633 hom., cov: 32)
• Consequence: GABRB2 NM_001371727.1 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.22

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]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.89).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.161 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GABRB2	NM_001371727.1	c.832+1751G>A		intron_variant		ENST00000393959.6
GABRB2	NM_000813.3	c.832+1751G>A		intron_variant
GABRB2	NM_021911.3	c.832+1751G>A		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GABRB2	ENST00000393959.6	c.832+1751G>A		intron_variant		1	NM_001371727.1

Frequencies

GnomAD3 genomes AF: 0.0547 AC: 8322 AN: 152058 Hom.: 629 Cov.: 32

Gnomad AFR AF: 0.164

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0288

Gnomad ASJ AF: 0.00548

Gnomad EAS AF: 0.116

Gnomad SAS AF: 0.0431

Gnomad FIN AF: 0.0000944

Gnomad MID AF: 0.0316

Gnomad NFE AF: 0.00231

Gnomad OTH AF: 0.0445

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0549 AC: 8351 AN: 152176 Hom.: 633 Cov.: 32 AF XY: 0.0552 AC XY: 4105 AN XY: 74406

Gnomad4 AFR AF: 0.164

Gnomad4 AMR AF: 0.0290

Gnomad4 ASJ AF: 0.00548

Gnomad4 EAS AF: 0.116

Gnomad4 SAS AF: 0.0429

Gnomad4 FIN AF: 0.0000944

Gnomad4 NFE AF: 0.00229

Gnomad4 OTH AF: 0.0459

Alfa AF: 0.0302 Hom.: 36

Bravo AF: 0.0627

Asia WGS AF: 0.0930 AC: 322 AN: 3472

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.89
Cadd	Benign	1.5
Dann	Benign	0.84

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

Other links and lift over

dbSNP: rs6891988; hg19: chr5-160760008;