rs1555401442
Variant summary
Our verdict is Pathogenic. Variant got 10 ACMG points: 10P and 0B. PM1PM2PP2PP3_StrongPP5
The NM_000814.6(GABRB3):c.841A>G(p.Thr281Ala) 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. 12/21 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Genomes: not found (cov: 33)
Consequence
GABRB3
NM_000814.6 missense
NM_000814.6 missense
Scores
11
1
1
Clinical Significance
Conservation
PhyloP100: 7.90
Genes affected
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 Pathogenic. Variant got 10 ACMG points.
PM1
?
In a hotspot region, there are 5 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 5 uncertain in NM_000814.6
PM2
?
Very rare variant in population databases, with high coverage;
PP2
?
Missense variant where missense usually causes diseases, GABRB3
PP3
?
MetaRNN computational evidence supports a deleterious effect, 0.955
PP5
?
Variant 15-26561171-T-C is Pathogenic according to our data. Variant chr15-26561171-T-C is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 548619.We mark this variant Likely_pathogenic, oryginal submissions are: {Uncertain_significance=2, Likely_pathogenic=1}.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
GABRB3 | NM_000814.6 | c.841A>G | p.Thr281Ala | missense_variant | 8/9 | ENST00000311550.10 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
GABRB3 | ENST00000311550.10 | c.841A>G | p.Thr281Ala | missense_variant | 8/9 | 1 | NM_000814.6 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 33
GnomAD3 genomes
?
Cov.:
33
GnomAD4 exome Cov.: 34
GnomAD4 exome
Cov.:
34
GnomAD4 genome ? Cov.: 33
GnomAD4 genome
?
Cov.:
33
ClinVar
Significance: Conflicting classifications of pathogenicity
Submissions summary: Pathogenic:1Uncertain:2
Revision: criteria provided, conflicting classifications
LINK: link
Submissions by phenotype
Developmental and epileptic encephalopathy, 43 Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Baylor Genetics | Mar 02, 2023 | - - |
Developmental and epileptic encephalopathy, 1 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Genomic Research Center, Shahid Beheshti University of Medical Sciences | Mar 05, 2018 | - - |
Epilepsy, childhood absence, susceptibility to, 1 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Genomic Research Center, Shahid Beheshti University of Medical Sciences | Mar 05, 2018 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
Cadd
Pathogenic
Dann
Uncertain
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Pathogenic
D
M_CAP
Pathogenic
D
MetaRNN
Pathogenic
D;D;D;D;D;D;D;D;D
MetaSVM
Pathogenic
D
MutationTaster
Benign
D;D;D;D;D
PrimateAI
Pathogenic
D
Sift4G
Pathogenic
D;D;D;D;D;.;.;D;D
Polyphen
1.0
.;D;.;D;D;.;.;.;.
Vest4
MutPred
0.78
.;.;.;Loss of glycosylation at T337 (P = 0.0191);.;.;.;.;.;
MVP
MPC
2.2
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