Genetic Variant OR2T8:p.Arg92Cys (chr1-247921291-C-T) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BP4_Strong

The NM_001005522.2(OR2T8):c.274C>T(p.Arg92Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000085 ( 0 hom., cov: 15)

Exomes 𝑓: 0.000012 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

OR2T8
NM_001005522.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -1.74

Variant links:

Genes affected

OR2T8 (HGNC:15020): (olfactory receptor family 2 subfamily T member 8) 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]

OR2T8 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.037896335).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
OR2T8	NM_001005522.2 link	c.274C>T	p.Arg92Cys	missense_variant	Exon 2 of 2	ENST00000641945.2	NP_001005522.1	A6NH00

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
OR2T8	ENST00000641945.2 link	c.274C>T	p.Arg92Cys	missense_variant	Exon 2 of 2		NM_001005522.2	ENSP00000493286.1		A6NH00

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

117914

Hom.:

Cov.:

FAILED QC

Gnomad AFR

AF:

0.0000343

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000638

AC:

AN:

141052

Hom.:

AF XY:

0.0000546

AC XY:

AN XY:

73228

show subpopulations

Gnomad AFR exome

AF:

0.000426

Gnomad AMR exome

AF:

0.0000423

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000183

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000177

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.0000122

AC:

AN:

1144424

Hom.:

Cov.:

AF XY:

0.0000104

AC XY:

AN XY:

575868

show subpopulations

Gnomad4 AFR exome

AF:

0.000188

Gnomad4 AMR exome

AF:

0.0000277

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000433

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000470

Gnomad4 OTH exome

AF:

0.0000202

GnomAD4 genome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.00000848

AC:

AN:

117914

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

55234

show subpopulations

Gnomad4 AFR

AF:

0.0000343

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:

0.00

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.0000741

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Sep 12, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.274C>T (p.R92C) alteration is located in exon 1 (coding exon 1) of the OR2T8 gene. This alteration results from a C to T substitution at nucleotide position 274, causing the arginine (R) at amino acid position 92 to be replaced by a cysteine (C). 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

0.17

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.69

CADD

Benign

8.7

DANN

Benign

0.97

DEOGEN2

Benign

0.0048

T;T

Eigen

Benign

-0.89

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.0077

LIST_S2

Benign

0.75

.;T

M_CAP

Benign

0.0023

MetaRNN

Benign

0.038

T;T

MetaSVM

Benign

-0.88

MutationAssessor

Benign

1.2

L;L

PrimateAI

Benign

0.22

PROVEAN

Benign

-0.56

.;N

REVEL

Benign

0.081

Sift

Benign

0.093

.;T

Sift4G

Uncertain

0.048

.;D

Polyphen

0.97

D;D

Vest4

0.11

MVP

0.15

ClinPred

0.037

GERP RS

-1.8

Varity_R

0.074

gMVP

0.095

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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