chr12-6845637-C-T
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 0P and 0B.
The NM_002075.4(GNB3):c.751C>T(p.Arg251Cys) variant causes a missense change. The variant allele was found at a frequency of 0.0000105 in 1,613,648 control chromosomes in the GnomAD database, including 2 homozygotes. 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. R251H) has been classified as Uncertain significance.
Frequency
Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000096 ( 2 hom. )
Consequence
GNB3
NM_002075.4 missense
NM_002075.4 missense
Scores
5
10
4
Clinical Significance
Conservation
PhyloP100: 4.79
Genes affected
GNB3 (HGNC:4400): (G protein subunit beta 3) Heterotrimeric guanine nucleotide-binding proteins (G proteins), which integrate signals between receptors and effector proteins, are composed of an alpha, a beta, and a gamma subunit. These subunits are encoded by families of related genes. This gene encodes a beta subunit which belongs to the WD repeat G protein beta family. Beta subunits are important regulators of alpha subunits, as well as of certain signal transduction receptors and effectors. A single-nucleotide polymorphism (C825T) in this gene is associated with essential hypertension and obesity. This polymorphism is also associated with the occurrence of the splice variant GNB3-s, which appears to have increased activity. GNB3-s is an example of alternative splicing caused by a nucleotide change outside of the splice donor and acceptor sites. Alternative splicing results in multiple transcript variants. Additional alternatively spliced transcript variants of this gene have been described, but their full-length nature is not known. [provided by RefSeq, Jul 2014]
Genome browser will be placed here
ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 0 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
GNB3 | NM_002075.4 | c.751C>T | p.Arg251Cys | missense_variant | 9/10 | ENST00000229264.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
GNB3 | ENST00000229264.8 | c.751C>T | p.Arg251Cys | missense_variant | 9/10 | 5 | NM_002075.4 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.0000197 AC: 3AN: 152160Hom.: 0 Cov.: 32
GnomAD3 genomes
?
AF:
AC:
3
AN:
152160
Hom.:
Cov.:
32
Gnomad AFR
AF:
Gnomad AMI
AF:
Gnomad AMR
AF:
Gnomad ASJ
AF:
Gnomad EAS
AF:
Gnomad SAS
AF:
Gnomad FIN
AF:
Gnomad MID
AF:
Gnomad NFE
AF:
Gnomad OTH
AF:
GnomAD3 exomes AF: 0.0000239 AC: 6AN: 251072Hom.: 0 AF XY: 0.0000368 AC XY: 5AN XY: 135782
GnomAD3 exomes
AF:
AC:
6
AN:
251072
Hom.:
AF XY:
AC XY:
5
AN XY:
135782
Gnomad AFR exome
AF:
Gnomad AMR exome
AF:
Gnomad ASJ exome
AF:
Gnomad EAS exome
AF:
Gnomad SAS exome
AF:
Gnomad FIN exome
AF:
Gnomad NFE exome
AF:
Gnomad OTH exome
AF:
GnomAD4 exome AF: 0.00000958 AC: 14AN: 1461488Hom.: 2 Cov.: 31 AF XY: 0.0000138 AC XY: 10AN XY: 727060
GnomAD4 exome
AF:
AC:
14
AN:
1461488
Hom.:
Cov.:
31
AF XY:
AC XY:
10
AN XY:
727060
Gnomad4 AFR exome
AF:
Gnomad4 AMR exome
AF:
Gnomad4 ASJ exome
AF:
Gnomad4 EAS exome
AF:
Gnomad4 SAS exome
AF:
Gnomad4 FIN exome
AF:
Gnomad4 NFE exome
AF:
Gnomad4 OTH exome
AF:
GnomAD4 genome ? AF: 0.0000197 AC: 3AN: 152160Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1AN XY: 74324
GnomAD4 genome
?
AF:
AC:
3
AN:
152160
Hom.:
Cov.:
32
AF XY:
AC XY:
1
AN XY:
74324
Gnomad4 AFR
AF:
Gnomad4 AMR
AF:
Gnomad4 ASJ
AF:
Gnomad4 EAS
AF:
Gnomad4 SAS
AF:
Gnomad4 FIN
AF:
Gnomad4 NFE
AF:
Gnomad4 OTH
AF:
Alfa
AF:
Hom.:
Bravo
AF:
ExAC
?
AF:
AC:
4
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 | Jul 01, 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. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals affected with GNB3-related conditions. This variant is present in population databases (rs782368057, gnomAD 0.04%). This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 251 of the GNB3 protein (p.Arg251Cys). - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
Cadd
Pathogenic
Dann
Uncertain
DEOGEN2
Benign
T;.;T
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Uncertain
D
LIST_S2
Pathogenic
D;D;D
M_CAP
Uncertain
D
MetaRNN
Uncertain
D;D;D
MetaSVM
Uncertain
D
MutationAssessor
Uncertain
M;.;.
MutationTaster
Benign
D;D
PrimateAI
Uncertain
T
PROVEAN
Pathogenic
D;D;D
REVEL
Uncertain
Sift
Pathogenic
D;D;D
Sift4G
Pathogenic
D;D;D
Polyphen
D;D;.
Vest4
MutPred
Gain of catalytic residue at L252 (P = 0.0056);.;.;
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