Genetic Variant OR2T4:p.Ala129Thr (chr1-248362049-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_001004696.2(OR2T4):c.385G>A(p.Ala129Thr) variant causes a missense change. The variant allele was found at a frequency of 0.000162 in 1,614,038 control chromosomes in the GnomAD database, including 1 homozygotes. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00017 ( 1 hom. )

Consequence

OR2T4
NM_001004696.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.28

Variant links:

Genes affected

OR2T4 (HGNC:15016): (olfactory receptor family 2 subfamily T member 4) 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]

OR2T4 links:

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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
OR2T4	NM_001004696.2 link	c.385G>A	p.Ala129Thr	missense_variant	Exon 1 of 1	ENST00000366473.4	NP_001004696.2	Q8NH00

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
OR2T4	ENST00000366473.4 link	c.385G>A	p.Ala129Thr	missense_variant	Exon 1 of 1	6	NM_001004696.2	ENSP00000355429.3		A0A2C9F2M9

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152042

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.000103

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000358

AC:

AN:

251322

Hom.:

AF XY:

0.0000221

AC XY:

AN XY:

135820

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

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:

0.0000704

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000174

AC:

254

AN:

1461880

Hom.:

Cov.:

AF XY:

0.000146

AC XY:

106

AN XY:

727246

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

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:

0.000217

Gnomad4 OTH exome

AF:

0.000199

GnomAD4 genome

AF:

0.0000460

AC:

AN:

152158

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74394

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.000103

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000113

Hom.:

Bravo

AF:

0.0000453

ExAC

AF:

0.0000412

AC:

EpiCase

AF:

0.000164

EpiControl

AF:

0.0000594

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 14, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.469G>A (p.A157T) alteration is located in exon 1 (coding exon 1) of the OR2T4 gene. This alteration results from a G to A substitution at nucleotide position 469, causing the alanine (A) at amino acid position 157 to be replaced by a threonine (T). 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

Uncertain

0.49

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.38

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.081

T;.

Eigen

Uncertain

0.31

Eigen_PC

Benign

0.12

FATHMM_MKL

Uncertain

0.89

LIST_S2

Uncertain

0.90

.;D

M_CAP

Benign

0.0016

MetaRNN

Uncertain

0.47

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Pathogenic

3.0

M;.

PrimateAI

Benign

0.30

PROVEAN

Uncertain

-3.9

D;D

REVEL

Benign

0.20

Sift

Uncertain

0.0040

D;D

Sift4G

Pathogenic

0.0

D;.

Polyphen

1.0

D;.

Vest4

0.46

MVP

0.45

MPC

0.46

ClinPred

0.92

GERP RS

2.5

Varity_R

0.67

gMVP

0.35

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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