chr15-26883521-G-A
Variant summary
Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM2PP2PP3_Strong
The NM_000810.4(GABRA5):c.461G>A(p.Arg154Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 33)
Exomes 𝑓: 0.0 ( 0 hom. )
Failed GnomAD Quality Control
Consequence
GABRA5
NM_000810.4 missense
NM_000810.4 missense
Scores
12
5
1
Clinical Significance
Conservation
PhyloP100: 9.78
Genes affected
GABRA5 (HGNC:4079): (gamma-aminobutyric acid type A receptor subunit alpha5) 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. At least 16 distinct subunits of GABA-A receptors have been identified. Transcript variants utilizing three different alternative non-coding first exons have been described. [provided by RefSeq, Jul 2008]
GABRB3 (HGNC:4083): (gamma-aminobutyric acid type A receptor subunit beta3) This gene encodes a member of the ligand-gated ionic channel family. The encoded protein is one the subunits of a multi-subunit chloride channel that serves as the receptor for gamma-aminobutyric acid, a major inhibitory neurotransmitter of the mammalian nervous system. This gene is located on the long arm of chromosome 15 in a cluster with two other genes encoding related subunits of the family. This gene may be associated with the pathogenesis of several disorders including Angelman syndrome, Prader-Willi syndrome, nonsyndromic orofacial clefts, epilepsy and autism. Alternatively spliced transcript variants encoding distinct isoforms have been described. [provided by RefSeq, Jul 2013]
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ACMG classification
Classification made for transcript
Verdict is Likely_pathogenic. Variant got 7 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
PP2
?
Missense variant where missense usually causes diseases, GABRA5
PP3
?
MetaRNN computational evidence supports a deleterious effect, 0.958
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
GABRA5 | NM_000810.4 | c.461G>A | p.Arg154Gln | missense_variant | 6/11 | ENST00000335625.10 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
GABRA5 | ENST00000335625.10 | c.461G>A | p.Arg154Gln | missense_variant | 6/11 | 1 | NM_000810.4 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 33
GnomAD3 genomes
?
Cov.:
33
GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0AN: 1459944Hom.: 0 Cov.: 36 AF XY: 0.00 AC XY: 0AN XY: 726236
GnomAD4 exome
Data not reliable, filtered out with message: AC0
AF:
AC:
0
AN:
1459944
Hom.:
Cov.:
36
AF XY:
AC XY:
0
AN XY:
726236
Gnomad4 AFR exome
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Gnomad4 AMR exome
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Gnomad4 ASJ exome
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Gnomad4 EAS exome
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Gnomad4 SAS exome
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Gnomad4 FIN exome
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Gnomad4 OTH exome
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GnomAD4 genome ? Cov.: 33
GnomAD4 genome
?
Cov.:
33
Alfa
AF:
Hom.:
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | GeneDx | Jun 24, 2022 | Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
Cadd
Pathogenic
Dann
Pathogenic
DEOGEN2
Uncertain
D;D;T;D;.
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Pathogenic
D
M_CAP
Uncertain
D
MetaRNN
Pathogenic
D;D;D;D;D
MetaSVM
Uncertain
D
MutationAssessor
Pathogenic
M;M;.;M;.
MutationTaster
Benign
D;D;D;D
PrimateAI
Uncertain
T
PROVEAN
Uncertain
D;D;D;D;D
REVEL
Pathogenic
Sift
Pathogenic
D;D;D;D;D
Sift4G
Pathogenic
D;D;D;D;D
Polyphen
D;D;.;D;.
Vest4
MutPred
Loss of catalytic residue at R154 (P = 0.0813);Loss of catalytic residue at R154 (P = 0.0813);.;Loss of catalytic residue at R154 (P = 0.0813);Loss of catalytic residue at R154 (P = 0.0813);
MVP
MPC
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at