rs2889395

Variant names:

• chr15-27069252-A-G
• rs2889395
• NM_033223.5:c.270+42431A>G

Your query was ambiguous. Multiple possible variants found:

• chr15-27069252-A-G
• chr15-27069252-A-T

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_033223.5(GABRG3):​c.270+42431A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.21 in 152,096 control chromosomes in the GnomAD database, including 3,496 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 0.21 (3496 hom., cov: 33)
• Consequence: GABRG3 NM_033223.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.03
• Publications: 0 publications found

Genes affected

GABRG3 (HGNC:4088): (gamma-aminobutyric acid type A receptor subunit gamma3) This gene encodes a gamma-aminobutyric acid (GABA) receptor. GABA is the major inhibitory neurotransmitter in the mammalian brain where it acts at GABA-A receptors, which are ligand-gated chloride channels. Chloride conductance of these channels can be modulated by agents such as benzodiazepines that bind to the GABA-A receptor. GABA-A receptors are pentameric, consisting of proteins from several subunit classes: alpha, beta, gamma, delta and rho. The protein encoded by this gene is a gamma subunit, which contains the benzodiazepine binding site. Two transcript variants encoding distinct isoforms have been found for this gene. [provided by RefSeq, Aug 2012]

GABRG3-AS1 (HGNC:40249): (GABRG3 antisense RNA 1)

LOC124903449 (HGNC:):

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.91).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.254 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_033223.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GABRG3	NM_033223.5	MANE Select	c.270+42431A>G		intron	N/A	NP_150092.2
	GABRG3	NM_001270873.2		c.270+42431A>G		intron	N/A	NP_001257802.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GABRG3	ENST00000615808.5	TSL:1 MANE Select	c.270+42431A>G		intron	N/A	ENSP00000479113.1
	GABRG3	ENST00000555083.5	TSL:2	c.270+42431A>G		intron	N/A	ENSP00000452244.1
	GABRG3-AS1	ENST00000660679.1		n.377-28578T>C		intron	N/A

Frequencies

GnomAD3 genomes AF: 0.210 AC: 31851 AN: 151978 Hom.: 3484 Cov.: 33

Gnomad AFR AF: 0.258

Gnomad AMI AF: 0.242

Gnomad AMR AF: 0.164

Gnomad ASJ AF: 0.220

Gnomad EAS AF: 0.117

Gnomad SAS AF: 0.0734

Gnomad FIN AF: 0.155

Gnomad MID AF: 0.269

Gnomad NFE AF: 0.214

Gnomad OTH AF: 0.211

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

GnomAD4 genome AF: 0.210 AC: 31895 AN: 152096 Hom.: 3496 Cov.: 33 AF XY: 0.204 AC XY: 15137 AN XY: 74362

African (AFR) AF: 0.258 AC: 10707 AN: 41484

American (AMR) AF: 0.164 AC: 2504 AN: 15286

Ashkenazi Jewish (ASJ) AF: 0.220 AC: 762 AN: 3468

East Asian (EAS) AF: 0.116 AC: 600 AN: 5162

South Asian (SAS) AF: 0.0736 AC: 355 AN: 4822

European-Finnish (FIN) AF: 0.155 AC: 1645 AN: 10590

Middle Eastern (MID) AF: 0.269 AC: 79 AN: 294

European-Non Finnish (NFE) AF: 0.214 AC: 14575 AN: 67966

Other (OTH) AF: 0.212 AC: 447 AN: 2112

Alfa AF: 0.218 Hom.: 539

Bravo AF: 0.214

Asia WGS AF: 0.119 AC: 416 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.91
CADD	Benign	10
DANN	Benign	0.77
PhyloP100		1.0
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs2889395; hg19: chr15-27314399;