rs766337060

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_000815.5(GABRD):​c.1214G>A​(p.Gly405Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000019 in 1,579,588 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G405V) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)
Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

GABRD
NM_000815.5 missense

Scores

1
18

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.71

Publications

0 publications found
Variant links:
Genes affected
GABRD (HGNC:4084): (gamma-aminobutyric acid type A receptor subunit delta) Gamma-aminobutyric acid (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. The GABA-A receptor is generally pentameric and there are five types of subunits: alpha, beta, gamma, delta, and rho. This gene encodes the delta subunit. Mutations in this gene have been associated with susceptibility to generalized epilepsy with febrile seizures, type 5. Alternatively spliced transcript variants have been described for this gene, but their biological validity has not been determined. [provided by RefSeq, Jul 2008]
GABRD Gene-Disease associations (from GenCC):
  • complex neurodevelopmental disorder
    Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics, ClinGen
  • epilepsy
    Inheritance: AD Classification: LIMITED Submitted by: ClinGen
  • epilepsy, idiopathic generalized, susceptibility to, 10
    Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.047251403).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
GABRDNM_000815.5 linkc.1214G>A p.Gly405Glu missense_variant Exon 9 of 9 ENST00000378585.7 NP_000806.2 O14764A8K496
GABRDXM_017000936.2 linkc.1919G>A p.Gly640Glu missense_variant Exon 8 of 8 XP_016856425.1
GABRDXM_011541194.4 linkc.1253G>A p.Gly418Glu missense_variant Exon 9 of 9 XP_011539496.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
GABRDENST00000378585.7 linkc.1214G>A p.Gly405Glu missense_variant Exon 9 of 9 1 NM_000815.5 ENSP00000367848.4 O14764

Frequencies

GnomAD3 genomes
AF:
0.00000657
AC:
1
AN:
152226
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000147
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000225
AC:
5
AN:
222486
AF XY:
0.00000828
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.000283
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000140
AC:
2
AN:
1427362
Hom.:
0
Cov.:
32
AF XY:
0.00000142
AC XY:
1
AN XY:
706560
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
32460
American (AMR)
AF:
0.00
AC:
0
AN:
40270
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
24050
East Asian (EAS)
AF:
0.0000509
AC:
2
AN:
39304
South Asian (SAS)
AF:
0.00
AC:
0
AN:
81810
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
51122
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5610
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1093930
Other (OTH)
AF:
0.00
AC:
0
AN:
58806
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.525
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.00000657
AC:
1
AN:
152226
Hom.:
0
Cov.:
33
AF XY:
0.0000134
AC XY:
1
AN XY:
74364
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41466
American (AMR)
AF:
0.00
AC:
0
AN:
15294
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5186
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4832
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10622
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.0000147
AC:
1
AN:
68034
Other (OTH)
AF:
0.00
AC:
0
AN:
2092
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.525
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Alfa
AF:
0.00
Hom.:
0
Bravo
AF:
0.00000378
ExAC
AF:
0.0000248
AC:
3

ClinVar

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

Submissions by phenotype

Inborn genetic diseases Uncertain:1
Apr 18, 2023
Ambry Genetics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

The c.1214G>A (p.G405E) alteration is located in exon 9 (coding exon 9) of the GABRD gene. This alteration results from a G to A substitution at nucleotide position 1214, causing the glycine (G) at amino acid position 405 to be replaced by a glutamic acid (E). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.072
BayesDel_addAF
Benign
-0.42
T
BayesDel_noAF
Benign
-0.54
CADD
Benign
11
DANN
Benign
0.37
DEOGEN2
Benign
0.12
T;.;.;.
Eigen
Benign
-0.97
Eigen_PC
Benign
-0.92
FATHMM_MKL
Benign
0.32
N
LIST_S2
Benign
0.67
T;T;T;T
M_CAP
Benign
0.084
D
MetaRNN
Benign
0.047
T;T;T;T
MetaSVM
Benign
-0.70
T
MutationAssessor
Benign
-1.6
N;.;.;.
PhyloP100
1.7
PrimateAI
Uncertain
0.52
T
PROVEAN
Benign
-0.050
N;.;.;.
REVEL
Benign
0.18
Sift
Benign
0.56
T;.;.;.
Sift4G
Benign
0.85
T;.;.;.
Polyphen
0.0
B;.;.;.
Vest4
0.079
MutPred
0.47
Gain of solvent accessibility (P = 0.012);.;.;.;
MVP
0.28
MPC
0.97
ClinPred
0.023
T
GERP RS
2.4
Varity_R
0.041
gMVP
0.51
Mutation Taster
=87/13
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.020
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs766337060; hg19: chr1-1961576; API