5-161332949-T-C

Position:

• chr5-161332949-T-C

Variant summary

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

The NM_001371727.1(GABRB2):​c.832+1803A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.365 in 151,930 control chromosomes in the GnomAD database, including 10,237 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 0.37 (10237 hom., cov: 31)
• Consequence: GABRB2 NM_001371727.1 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.17

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=-0.9).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.38 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
GABRB2	NM_001371727.1	c.832+1803A>G		intron_variant		ENST00000393959.6	NP_001358656.1
GABRB2	NM_000813.3	c.832+1803A>G		intron_variant			NP_000804.1
GABRB2	NM_021911.3	c.832+1803A>G		intron_variant			NP_068711.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
GABRB2	ENST00000393959.6	c.832+1803A>G		intron_variant		1	NM_001371727.1	ENSP00000377531

Frequencies

GnomAD3 genomes AF: 0.365 AC: 55453 AN: 151812 Hom.: 10221 Cov.: 31

Gnomad AFR AF: 0.385

Gnomad AMI AF: 0.414

Gnomad AMR AF: 0.342

Gnomad ASJ AF: 0.339

Gnomad EAS AF: 0.281

Gnomad SAS AF: 0.283

Gnomad FIN AF: 0.435

Gnomad MID AF: 0.349

Gnomad NFE AF: 0.361

Gnomad OTH AF: 0.363

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

GnomAD4 genome AF: 0.365 AC: 55492 AN: 151930 Hom.: 10237 Cov.: 31 AF XY: 0.364 AC XY: 27061 AN XY: 74246

Gnomad4 AFR AF: 0.385

Gnomad4 AMR AF: 0.342

Gnomad4 ASJ AF: 0.339

Gnomad4 EAS AF: 0.281

Gnomad4 SAS AF: 0.284

Gnomad4 FIN AF: 0.435

Gnomad4 NFE AF: 0.361

Gnomad4 OTH AF: 0.358

Alfa AF: 0.359 Hom.: 16781

Bravo AF: 0.364

Asia WGS AF: 0.273 AC: 950 AN: 3476

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.90
CADD	Benign	1.8
DANN	Benign	0.21

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.13		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: rs1816071; hg19: chr5-160759956;