rs9291303

Variant names:

• chr4-47106640-G-C
• rs9291303
• NM_000812.4:c.241-54609G>C

Variant summary

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

The NM_000812.4(GABRB1):​c.241-54609G>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0665 in 151,860 control chromosomes in the GnomAD database, including 865 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 0.067 (865 hom., cov: 32)
• Consequence: GABRB1 NM_000812.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.819

Genes affected

GABRB1 (HGNC:4081): (gamma-aminobutyric acid type A receptor subunit beta1) 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 1 subunit. It is mapped to chromosome 4p12 in a cluster comprised of genes encoding alpha 4, alpha 2 and gamma 1 subunits of the GABA A receptor. Alteration of this gene is implicated in the pathogenetics of schizophrenia. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.92).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.192 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GABRB1	NM_000812.4	c.241-54609G>C		intron_variant	Intron 3 of 8	ENST00000295454.8	NP_000803.2
GABRB1	XM_024453976.2	c.142-54609G>C		intron_variant	Intron 3 of 8		XP_024309744.1
GABRB1	XM_024453977.2	c.142-54609G>C		intron_variant	Intron 4 of 9		XP_024309745.1
GABRB1	XM_017007986.3	c.241-54609G>C		intron_variant	Intron 3 of 4		XP_016863475.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GABRB1	ENST00000295454.8	c.241-54609G>C		intron_variant	Intron 3 of 8	1	NM_000812.4	ENSP00000295454.3
GABRB1	ENST00000513567.5	c.142-54609G>C		intron_variant	Intron 3 of 3	4		ENSP00000426753.1
GABRB1	ENST00000510909.1	n.173-54609G>C		intron_variant	Intron 2 of 4	4		ENSP00000426766.1

Frequencies

GnomAD3 genomes AF: 0.0665 AC: 10086 AN: 151742 Hom.: 862 Cov.: 32

Gnomad AFR AF: 0.196

Gnomad AMI AF: 0.00110

Gnomad AMR AF: 0.0229

Gnomad ASJ AF: 0.0245

Gnomad EAS AF: 0.0244

Gnomad SAS AF: 0.0595

Gnomad FIN AF: 0.0520

Gnomad MID AF: 0.0253

Gnomad NFE AF: 0.00711

Gnomad OTH AF: 0.0531

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

GnomAD4 genome AF: 0.0665 AC: 10102 AN: 151860 Hom.: 865 Cov.: 32 AF XY: 0.0679 AC XY: 5044 AN XY: 74248

Gnomad4 AFR AF: 0.196

Gnomad4 AMR AF: 0.0228

Gnomad4 ASJ AF: 0.0245

Gnomad4 EAS AF: 0.0246

Gnomad4 SAS AF: 0.0589

Gnomad4 FIN AF: 0.0520

Gnomad4 NFE AF: 0.00713

Gnomad4 OTH AF: 0.0525

Alfa AF: 0.0425 Hom.: 61

Bravo AF: 0.0674

Asia WGS AF: 0.0640 AC: 223 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.92
CADD	Benign	0.29
DANN	Benign	0.42

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: rs9291303; hg19: chr4-47108657;