7-144259394-G-A

Position:

chr7-144259394-G-A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_001005328.2(OR2A7):c.235C>T(p.Arg79Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000076 ( 0 hom., cov: 19)

Exomes 𝑓: 0.000014 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

OR2A7
NM_001005328.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.121

Variant links:

Genes affected

OR2A7 (HGNC:8234): (olfactory receptor family 2 subfamily A member 7) 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]

OR2A7 links:

ARHGEF34P (HGNC:):

ARHGEF34P links:

ARHGEF35-AS1 (HGNC:41292): (ARHGEF35 antisense RNA 1)

ARHGEF35-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.19951323).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
OR2A7	NM_001005328.2 linkuse as main transcript	c.235C>T	p.Arg79Trp	missense_variant	2/2	ENST00000641841.1	NP_001005328.1
ARHGEF34P	NR_033942.1 linkuse as main transcript	n.3806C>T		non_coding_transcript_exon_variant	13/13
ARHGEF35-AS1	NR_126022.1 linkuse as main transcript	n.494-21078G>A		intron_variant, non_coding_transcript_variant
OR2A1-AS1	NR_126023.1 linkuse as main transcript	n.608-19651C>T		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris
OR2A7	ENST00000641841.1 linkuse as main transcript	c.235C>T	p.Arg79Trp	missense_variant	2/2		NM_001005328.2	ENSP00000493320	P1
ARHGEF35-AS1	ENST00000460955.5 linkuse as main transcript	n.494-21078G>A		intron_variant, non_coding_transcript_variant		4
OR2A7	ENST00000493325.1 linkuse as main transcript	c.235C>T	p.Arg79Trp	missense_variant	1/1			ENSP00000420502	P1

Frequencies

GnomAD3 genomes

AF:

0.00000756

AC:

AN:

132264

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:

0.0000161

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000301

AC:

AN:

199128

Hom.:

AF XY:

0.00

AC XY:

AN XY:

107896

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000103

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000384

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000115

Gnomad OTH exome

AF:

0.000195

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.0000137

AC:

AN:

1163786

Hom.:

Cov.:

AF XY:

0.0000102

AC XY:

AN XY:

587420

show subpopulations

Gnomad4 AFR exome

AF:

0.0000777

Gnomad4 AMR exome

AF:

0.000124

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000262

Gnomad4 SAS exome

AF:

0.0000128

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000586

Gnomad4 OTH exome

AF:

0.0000397

GnomAD4 genome

AF:

0.00000756

AC:

AN:

132264

Hom.:

Cov.:

AF XY:

0.0000157

AC XY:

AN XY:

63588

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:

0.0000161

Gnomad4 OTH

AF:

0.00

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

Mar 30, 2024

The c.235C>T (p.R79W) alteration is located in exon 1 (coding exon 1) of the OR2A7 gene. This alteration results from a C to T substitution at nucleotide position 235, causing the arginine (R) at amino acid position 79 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

0.092

BayesDel_addAF

Benign

-0.44

BayesDel_noAF

Benign

-0.62

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.012

T;T

Eigen

Benign

-0.10

Eigen_PC

Benign

-0.22

FATHMM_MKL

Benign

0.23

M_CAP

Benign

0.011

MetaRNN

Benign

0.20

T;T

MetaSVM

Benign

-0.94

MutationAssessor

Benign

2.0

M;M

MutationTaster

Benign

1.0

D;N

PrimateAI

Benign

0.26

PROVEAN

Uncertain

-3.5

.;D

REVEL

Benign

0.068

Sift

Pathogenic

0.0

.;D

Sift4G

Pathogenic

0.0010

.;D

Polyphen

0.92

P;P

Vest4

0.23

MutPred

0.49

Loss of solvent accessibility (P = 0.1077);Loss of solvent accessibility (P = 0.1077);

MVP

0.44

ClinPred

0.39

GERP RS

3.0

Varity_R

0.32

gMVP

0.28

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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