1-248649990-C-A

Position:

chr1-248649990-C-A

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_001001824.2(OR2T27):c.895G>T(p.Gly299Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000273 in 1,577,574 control chromosomes in the GnomAD database, including 6 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G299A) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000021 ( 0 hom., cov: 27)

Exomes 𝑓: 0.000028 ( 6 hom. )

Consequence

OR2T27
NM_001001824.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.156

Variant links:

Genes affected

OR2T27 (HGNC:31252): (olfactory receptor family 2 subfamily T member 27) 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]

OR2T27 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.058094412).

BS2

High Homozygotes in GnomAdExome4 at 6 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
OR2T27	NM_001001824.2 link	c.895G>T	p.Gly299Trp	missense_variant	2/2	ENST00000460972.4	NP_001001824.1	Q8NH04
OR2T27	NM_001386060.1 link	c.895G>T	p.Gly299Trp	missense_variant	3/3		NP_001372989.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
OR2T27	ENST00000460972.4 link	c.895G>T	p.Gly299Trp	missense_variant	2/2	6	NM_001001824.2	ENSP00000493412.1		Q8NH04
OR2T27	ENST00000641652.1 link	c.895G>T	p.Gly299Trp	missense_variant	3/3			ENSP00000493434.1		Q8NH04

Frequencies

GnomAD3 genomes

AF:

0.0000207

AC:

AN:

144750

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000203

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:

0.000139

AC:

AN:

245136

Hom.:

AF XY:

0.000106

AC XY:

AN XY:

132684

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00101

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000279

AC:

AN:

1432824

Hom.:

Cov.:

AF XY:

0.0000224

AC XY:

AN XY:

712998

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000867

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:

0.00

Gnomad4 OTH exome

AF:

0.0000337

GnomAD4 genome

AF:

0.0000207

AC:

AN:

144750

Hom.:

Cov.:

AF XY:

0.0000426

AC XY:

AN XY:

70488

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000203

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

Bravo

AF:

0.0000756

ExAC

AF:

0.000167

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

Jul 09, 2024

The c.895G>T (p.G299W) alteration is located in exon 1 (coding exon 1) of the OR2T27 gene. This alteration results from a G to T substitution at nucleotide position 895, causing the glycine (G) at amino acid position 299 to be replaced by a tryptophan (W). 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

0.16

BayesDel_addAF

Benign

-0.15

BayesDel_noAF

Benign

-0.46

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Benign

0.013

T;T;T

Eigen

Benign

-0.35

Eigen_PC

Benign

-0.63

FATHMM_MKL

Benign

0.080

LIST_S2

Benign

0.41

.;.;T

M_CAP

Benign

0.014

MetaRNN

Benign

0.058

T;T;T

MetaSVM

Benign

-0.92

PrimateAI

Benign

0.18

PROVEAN

Pathogenic

-5.1

.;.;D

REVEL

Benign

0.069

Sift

Uncertain

0.0010

.;.;D

Sift4G

Uncertain

0.011

.;.;D

Polyphen

0.79

P;P;P

Vest4

0.37

MutPred

0.43

Gain of solvent accessibility (P = 0.0281);Gain of solvent accessibility (P = 0.0281);Gain of solvent accessibility (P = 0.0281);

MVP

0.52

MPC

1.2

ClinPred

0.34

GERP RS

0.88

Varity_R

0.42

gMVP

0.12

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