rs12520992

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_StrongBP6_ModerateBA1

The NM_198904.4(GABRG2):​c.922+108A>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.119 in 1,150,928 control chromosomes in the GnomAD database, including 9,481 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

Frequency

Genomes: 𝑓 0.089 ( 810 hom., cov: 32)
Exomes 𝑓: 0.12 ( 8671 hom. )

Consequence

GABRG2
NM_198904.4 intron

Scores

2

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: -0.550
Variant links:
Genes affected
GABRG2 (HGNC:4087): (gamma-aminobutyric acid type A receptor subunit gamma2) This gene encodes a gamma-aminobutyric acid (GABA) receptor. GABA is the major inhibitory neurotransmitter in the mammlian brain, where it acts at GABA-A receptors, which are ligand-gated chloride channels. GABA-A receptors are pentameric, consisting of proteins from several subunit classes: alpha, beta, gamma, delta and rho. Mutations in this gene have been associated with epilepsy and febrile seizures. Multiple transcript variants encoding different isoforms have been identified for this gene. [provided by RefSeq, Jul 2008]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -14 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.87).
BP6
Variant 5-162142424-A-C is Benign according to our data. Variant chr5-162142424-A-C is described in ClinVar as [Benign]. Clinvar id is 675186.Status of the report is criteria_provided_single_submitter, 1 stars.
BA1
GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.133 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
GABRG2NM_198904.4 linkuse as main transcriptc.922+108A>C intron_variant ENST00000639213.2

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
GABRG2ENST00000639213.2 linkuse as main transcriptc.922+108A>C intron_variant 1 NM_198904.4 A1P18507-2

Frequencies

GnomAD3 genomes
AF:
0.0893
AC:
13590
AN:
152158
Hom.:
810
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0273
Gnomad AMI
AF:
0.0241
Gnomad AMR
AF:
0.0800
Gnomad ASJ
AF:
0.117
Gnomad EAS
AF:
0.00308
Gnomad SAS
AF:
0.0748
Gnomad FIN
AF:
0.0929
Gnomad MID
AF:
0.0791
Gnomad NFE
AF:
0.136
Gnomad OTH
AF:
0.0910
GnomAD4 exome
AF:
0.124
AC:
123528
AN:
998652
Hom.:
8671
Cov.:
13
AF XY:
0.122
AC XY:
63098
AN XY:
515372
show subpopulations
Gnomad4 AFR exome
AF:
0.0240
Gnomad4 AMR exome
AF:
0.0551
Gnomad4 ASJ exome
AF:
0.114
Gnomad4 EAS exome
AF:
0.00168
Gnomad4 SAS exome
AF:
0.0773
Gnomad4 FIN exome
AF:
0.0961
Gnomad4 NFE exome
AF:
0.145
Gnomad4 OTH exome
AF:
0.118
GnomAD4 genome
AF:
0.0893
AC:
13596
AN:
152276
Hom.:
810
Cov.:
32
AF XY:
0.0860
AC XY:
6407
AN XY:
74466
show subpopulations
Gnomad4 AFR
AF:
0.0273
Gnomad4 AMR
AF:
0.0799
Gnomad4 ASJ
AF:
0.117
Gnomad4 EAS
AF:
0.00308
Gnomad4 SAS
AF:
0.0755
Gnomad4 FIN
AF:
0.0929
Gnomad4 NFE
AF:
0.136
Gnomad4 OTH
AF:
0.0910
Alfa
AF:
0.0335
Hom.:
45
Bravo
AF:
0.0862
Asia WGS
AF:
0.0420
AC:
147
AN:
3478

ClinVar

Significance: Benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not provided Benign:1
Benign, criteria provided, single submitterclinical testingGeneDxJun 14, 2018This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.87
CADD
Benign
3.5
DANN
Benign
0.68

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.

Other links and lift over

dbSNP: rs12520992; hg19: chr5-161569430; API