1-247605818-C-T

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001001914.1(OR2G3):c.233C>T(p.Ala78Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000165 in 1,614,082 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00032 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00015 ( 0 hom. )

Consequence

OR2G3
NM_001001914.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.0630

Variant links:

Genes affected

OR2G3 (HGNC:15008): (olfactory receptor family 2 subfamily G member 3) Olfactory receptors interact with odorant molecules in the nose, to initiate a neuronal response that triggers the perception of a smell. The olfactory receptor proteins are members of a large family of G-protein-coupled receptors (GPCR) arising from single coding-exon genes. Olfactory receptors share a 7-transmembrane domain structure with many neurotransmitter and hormone receptors and are responsible for the recognition and G protein-mediated transduction of odorant signals. The olfactory receptor gene family is the largest in the genome. The nomenclature assigned to the olfactory receptor genes and proteins for this organism is independent of other organisms. [provided by RefSeq, Jul 2008]

OR2G3 links:

ENSG00000236817 (HGNC:):

ENSG00000236817 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.009248942).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
OR2G3	NM_001001914.1 link	c.233C>T	p.Ala78Val	missense_variant	Exon 1 of 1	ENST00000320002.3	NP_001001914.1	Q8NGZ4A0A126GVX0
LOC102724446	NR_188589.1 link	n.225+30037G>A		intron_variant	Intron 2 of 2
LOC102724446	NR_188590.1 link	n.437+30037G>A		intron_variant	Intron 2 of 2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
OR2G3	ENST00000320002.3 link	c.233C>T	p.Ala78Val	missense_variant	Exon 1 of 1	6	NM_001001914.1	ENSP00000326301.2	Q8NGZ4
ENSG00000236817	ENST00000435333.5 link	n.225+30037G>A		intron_variant	Intron 2 of 2	3
ENSG00000236817	ENST00000446347.1 link	n.437+30037G>A		intron_variant	Intron 2 of 2	2

Frequencies

GnomAD3 genomes

AF:

0.000316

AC:

AN:

152122

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000965

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00177

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000191

Gnomad OTH

AF:

0.00191

GnomAD3 exomes

AF:

0.000279

AC:

AN:

251196

Hom.:

AF XY:

0.000265

AC XY:

AN XY:

135754

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00133

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000176

Gnomad OTH exome

AF:

0.000653

GnomAD4 exome

AF:

0.000150

AC:

219

AN:

1461842

Hom.:

Cov.:

AF XY:

0.000133

AC XY:

AN XY:

727232

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00161

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000121

Gnomad4 OTH exome

AF:

0.000199

GnomAD4 genome

AF:

0.000315

AC:

AN:

152240

Hom.:

Cov.:

AF XY:

0.000349

AC XY:

AN XY:

74430

show subpopulations

Gnomad4 AFR

AF:

0.0000963

Gnomad4 AMR

AF:

0.00177

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000191

Gnomad4 OTH

AF:

0.00189

Alfa

AF:

0.000157

Hom.:

Bravo

AF:

0.000408

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.000198

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.000178

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 18, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.233C>T (p.A78V) alteration is located in exon 1 (coding exon 1) of the OR2G3 gene. This alteration results from a C to T substitution at nucleotide position 233, causing the alanine (A) at amino acid position 78 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.099

BayesDel_addAF

Benign

-0.60

BayesDel_noAF

Benign

-0.67

CADD

Benign

1.2

DANN

Benign

0.77

DEOGEN2

Benign

0.0016

Eigen

Benign

-1.4

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.0022

LIST_S2

Benign

0.82

M_CAP

Benign

0.0023

MetaRNN

Benign

0.0092

MetaSVM

Benign

-0.91

MutationAssessor

Benign

-1.8

PrimateAI

Benign

0.26

PROVEAN

Benign

2.7

REVEL

Benign

0.083

Sift

Benign

1.0

Sift4G

Benign

1.0

Polyphen

0.0

Vest4

0.020

MVP

0.12

MPC

0.054

ClinPred

0.024

GERP RS

0.55

Varity_R

0.055

gMVP

0.041

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over