chr1-109603449-T-C
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Variant summary
Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PP3_Strong
The NM_001377295.2(GNAT2):āc.970A>Gā(p.Thr324Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000188 in 1,594,022 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (ā ).
Frequency
Genomes: š 0.0000066 ( 0 hom., cov: 32)
Exomes š: 0.0000014 ( 0 hom. )
Consequence
GNAT2
NM_001377295.2 missense
NM_001377295.2 missense
Scores
14
4
1
Clinical Significance
Conservation
PhyloP100: 7.93
Genes affected
GNAT2 (HGNC:4394): (G protein subunit alpha transducin 2) Transducin is a 3-subunit guanine nucleotide-binding protein (G protein) which stimulates the coupling of rhodopsin and cGMP-phoshodiesterase during visual impulses. The transducin alpha subunits in rods and cones are encoded by separate genes. This gene encodes the alpha subunit in cones. [provided by RefSeq, Jul 2008]
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ACMG classification
Classification made for transcript
Verdict is Likely_pathogenic. Variant got 6 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.971
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
GNAT2 | NM_001377295.2 | c.970A>G | p.Thr324Ala | missense_variant | 9/9 | ENST00000679935.1 | |
GNAT2 | NM_001379232.1 | c.970A>G | p.Thr324Ala | missense_variant | 9/9 | ||
GNAT2 | NM_005272.5 | c.970A>G | p.Thr324Ala | missense_variant | 8/8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
GNAT2 | ENST00000679935.1 | c.970A>G | p.Thr324Ala | missense_variant | 9/9 | NM_001377295.2 | P1 | ||
GNAT2 | ENST00000351050.8 | c.970A>G | p.Thr324Ala | missense_variant | 8/8 | 1 | P1 |
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152208Hom.: 0 Cov.: 32
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GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251362Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 135856
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GnomAD4 exome AF: 0.00000139 AC: 2AN: 1441814Hom.: 0 Cov.: 26 AF XY: 0.00 AC XY: 0AN XY: 718644
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GnomAD4 genome AF: 0.00000657 AC: 1AN: 152208Hom.: 0 Cov.: 32 AF XY: 0.0000134 AC XY: 1AN XY: 74358
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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 | Invitae | Mar 20, 2022 | In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt GNAT2 protein function. This variant has not been reported in the literature in individuals affected with GNAT2-related conditions. This variant is present in population databases (no rsID available, gnomAD 0.0009%). This sequence change replaces threonine, which is neutral and polar, with alanine, which is neutral and non-polar, at codon 324 of the GNAT2 protein (p.Thr324Ala). - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
CADD
Pathogenic
DANN
Uncertain
DEOGEN2
Pathogenic
D
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Pathogenic
D
LIST_S2
Uncertain
D
M_CAP
Uncertain
D
MetaRNN
Pathogenic
D
MetaSVM
Pathogenic
D
MutationAssessor
Pathogenic
H
MutationTaster
Benign
D
PrimateAI
Uncertain
T
PROVEAN
Pathogenic
D
REVEL
Pathogenic
Sift
Pathogenic
D
Sift4G
Pathogenic
D
Polyphen
D
Vest4
MutPred
Gain of catalytic residue at T324 (P = 0.2216);
MVP
MPC
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at