Genetic Variant OR2M2:p.Cys189Tyr (chr1-248180551-G-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001004688.2(OR2M2):c.566G>A(p.Cys189Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000149 in 1,613,744 control chromosomes in the GnomAD database, including 1 homozygotes. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00011 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00015 ( 1 hom. )

Consequence

OR2M2
NM_001004688.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.92

Variant links:

Genes affected

OR2M2 (HGNC:8268): (olfactory receptor family 2 subfamily M member 2) 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]

OR2M2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
OR2M2	NM_001004688.2 link	c.566G>A	p.Cys189Tyr	missense_variant	Exon 2 of 2	ENST00000641836.1	NP_001004688.1	Q96R28A0A126GWI7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
OR2M2	ENST00000641836.1 link	c.566G>A	p.Cys189Tyr	missense_variant	Exon 2 of 2		NM_001004688.2	ENSP00000493201.1		Q96R28
OR2M2	ENST00000641211.1 link	c.566G>A	p.Cys189Tyr	missense_variant	Exon 3 of 3			ENSP00000492974.1		Q96R28

Frequencies

GnomAD3 genomes

AF:

0.000105

AC:

AN:

152126

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.000478

GnomAD3 exomes

AF:

0.0000757

AC:

AN:

251128

Hom.:

AF XY:

0.0000958

AC XY:

AN XY:

135712

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

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:

0.000168

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000154

AC:

225

AN:

1461618

Hom.:

Cov.:

AF XY:

0.000144

AC XY:

105

AN XY:

727124

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

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:

0.000199

Gnomad4 OTH exome

AF:

0.0000662

GnomAD4 genome

AF:

0.000105

AC:

AN:

152126

Hom.:

Cov.:

AF XY:

0.0000673

AC XY:

AN XY:

74310

show subpopulations

Gnomad4 AFR

AF:

0.0000483

Gnomad4 AMR

AF:

0.00

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:

0.000478

Alfa

AF:

0.000123

Hom.:

Bravo

AF:

0.000110

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.0000988

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 22, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.566G>A (p.C189Y) alteration is located in exon 1 (coding exon 1) of the OR2M2 gene. This alteration results from a G to A substitution at nucleotide position 566, causing the cysteine (C) at amino acid position 189 to be replaced by a tyrosine (Y). 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

Pathogenic

0.65

BayesDel_addAF

Benign

-0.34

BayesDel_noAF

Benign

-0.46

CADD

Benign

DANN

Benign

0.88

DEOGEN2

Benign

0.032

T;T;T

Eigen

Benign

0.085

Eigen_PC

Benign

-0.28

FATHMM_MKL

Benign

0.31

LIST_S2

Uncertain

0.90

.;.;D

M_CAP

Benign

0.00092

MetaRNN

Uncertain

0.71

D;D;D

MetaSVM

Benign

-0.92

MutationAssessor

Pathogenic

3.9

H;H;H

PrimateAI

Benign

0.32

PROVEAN

Pathogenic

-11

.;.;D

REVEL

Benign

0.11

Sift

Pathogenic

0.0

.;.;D

Sift4G

Pathogenic

0.0

.;.;D

Polyphen

0.99

D;D;D

Vest4

0.14

MVP

0.30

MPC

0.68

ClinPred

0.91

GERP RS

-0.88

Varity_R

0.77

gMVP

0.10

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

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