1-248453213-G-A

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 3P and 4B. PM2PP2BP4_Strong

The NM_001004136.2(OR2T2):c.416G>A(p.Arg139His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000469 in 1,608,616 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 0.00023 ( 0 hom., cov: 28)

Exomes 𝑓: 0.00049 ( 0 hom. )

Consequence

OR2T2
NM_001004136.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -2.87

Variant links:

Genes affected

OR2T2 (HGNC:14725): (olfactory receptor family 2 subfamily T 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]

OR2T2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP2

Missense variant where missense usually causes diseases, OR2T2

BP4

Computational evidence support a benign effect (MetaRNN=0.017261893).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
OR2T2	NM_001004136.2 linkuse as main transcript	c.416G>A	p.Arg139His	missense_variant	4/4	ENST00000641925.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
OR2T2	ENST00000641925.2 linkuse as main transcript	c.416G>A	p.Arg139His	missense_variant	4/4		NM_001004136.2	P1
OR2T2	ENST00000642130.1 linkuse as main transcript	c.416G>A	p.Arg139His	missense_variant	3/3			P1

Frequencies

GnomAD3 genomes

AF:

0.000232

AC:

AN:

150824

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000197

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000132

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000339

Gnomad OTH

AF:

0.000481

GnomAD3 exomes

AF:

0.000383

AC:

AN:

250572

Hom.:

AF XY:

0.000369

AC XY:

AN XY:

135444

show subpopulations

Gnomad AFR exome

AF:

0.000310

Gnomad AMR exome

AF:

0.0000579

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000109

Gnomad SAS exome

AF:

0.0000980

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000742

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000494

AC:

720

AN:

1457676

Hom.:

Cov.:

AF XY:

0.000478

AC XY:

347

AN XY:

725296

show subpopulations

Gnomad4 AFR exome

AF:

0.000305

Gnomad4 AMR exome

AF:

0.000112

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000101

Gnomad4 SAS exome

AF:

0.000151

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000599

Gnomad4 OTH exome

AF:

0.000365

GnomAD4 genome

AF:

0.000232

AC:

AN:

150940

Hom.:

Cov.:

AF XY:

0.000149

AC XY:

AN XY:

73688

show subpopulations

Gnomad4 AFR

AF:

0.000196

Gnomad4 AMR

AF:

0.000132

Gnomad4 ASJ

AF:

0.000288

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000339

Gnomad4 OTH

AF:

0.000476

Alfa

AF:

0.000432

Hom.:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000467

AC:

ExAC

AF:

0.000354

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 16, 2023

The c.416G>A (p.R139H) alteration is located in exon 1 (coding exon 1) of the OR2T2 gene. This alteration results from a G to A substitution at nucleotide position 416, causing the arginine (R) at amino acid position 139 to be replaced by a histidine (H). 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

0.070

BayesDel_addAF

Benign

-0.61

BayesDel_noAF

Benign

-0.73

Cadd

Benign

8.2

Dann

Benign

0.10

DEOGEN2

Benign

0.011

T;T;T

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.011

M_CAP

Benign

0.0031

MetaRNN

Benign

0.017

T;T;T

MetaSVM

Benign

-0.91

MutationAssessor

Benign

0.26

N;N;N

MutationTaster

Benign

1.0

PrimateAI

Benign

0.25

Polyphen

0.0020

B;B;B

Vest4

0.12

MVP

0.27

MPC

1.8

ClinPred

0.0094

GERP RS

0.092

Varity_R

0.047

gMVP

0.19

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.060

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