chr4-46965017-G-A
Position:
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate
The NM_000809.4(GABRA4):c.1087C>T(p.Pro363Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 32)
Consequence
GABRA4
NM_000809.4 missense
NM_000809.4 missense
Scores
19
Clinical Significance
Conservation
PhyloP100: 1.74
Genes affected
GABRA4 (HGNC:4078): (gamma-aminobutyric acid type A receptor subunit alpha4) 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. At least 16 distinct subunits of GABA-A receptors have been identified. This gene encodes subunit alpha-4, which is involved in the etiology of autism and eventually increases autism risk through interaction with another subunit, gamma-aminobutyric acid receptor beta-1 (GABRB1). Alternatively spliced transcript variants encoding different isoforms have been found in this gene.[provided by RefSeq, Feb 2011]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 0 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.12105882).
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
GABRA4 | NM_000809.4 | c.1087C>T | p.Pro363Ser | missense_variant | 8/9 | ENST00000264318.4 | |
GABRA4 | NM_001204266.2 | c.1030C>T | p.Pro344Ser | missense_variant | 8/9 | ||
GABRA4 | NM_001204267.2 | c.877C>T | p.Pro293Ser | missense_variant | 7/8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
GABRA4 | ENST00000264318.4 | c.1087C>T | p.Pro363Ser | missense_variant | 8/9 | 1 | NM_000809.4 | P1 | |
GABRA4 | ENST00000508560.5 | c.*908C>T | 3_prime_UTR_variant, NMD_transcript_variant | 8/9 | 3 | ||||
GABRA4 | ENST00000511523.5 | c.*755C>T | 3_prime_UTR_variant, NMD_transcript_variant | 7/8 | 3 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD3 genomes
Cov.:
32
GnomAD4 exome Cov.: 31
GnomAD4 exome
Cov.:
31
GnomAD4 genome Cov.: 32
GnomAD4 genome
Cov.:
32
Bravo
AF:
EpiCase
AF:
EpiControl
AF:
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
GABRA4-related Epileptic and Neurodevelopmental Disorder Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | New York Genome Center | Aug 31, 2022 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
DEOGEN2
Benign
T
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Benign
N
LIST_S2
Benign
T
M_CAP
Benign
D
MetaRNN
Benign
T
MetaSVM
Benign
T
MutationAssessor
Benign
N
MutationTaster
Benign
N
PrimateAI
Benign
T
PROVEAN
Benign
N
REVEL
Benign
Sift
Benign
T
Sift4G
Benign
T
Polyphen
B
Vest4
MutPred
Gain of helix (P = 0.0225);
MVP
MPC
ClinPred
T
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