chr6-29588855-G-C

Position:

chr6-29588855-G-C

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_007160.4(OR2H2):c.911G>C(p.Gly304Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000196 in 814,318 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 0.000033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000017 ( 0 hom. )

Consequence

OR2H2
NM_007160.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.474

Variant links:

Genes affected

OR2H2 (HGNC:8253): (olfactory receptor family 2 subfamily H 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]

OR2H2 links:

GABBR1 (HGNC:4070): (gamma-aminobutyric acid type B receptor subunit 1) This gene encodes a receptor for gamma-aminobutyric acid (GABA), which is the main inhibitory neurotransmitter in the mammalian central nervous system. This receptor functions as a heterodimer with GABA(B) receptor 2. Defects in this gene may underlie brain disorders such as schizophrenia and epilepsy. Alternative splicing generates multiple transcript variants, but the full-length nature of some of these variants has not been determined. [provided by RefSeq, Jan 2016]

GABBR1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.05737242).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
OR2H2	NM_007160.4 linkuse as main transcript	c.911G>C	p.Gly304Ala	missense_variant	2/2	ENST00000641840.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
OR2H2	ENST00000641840.1 linkuse as main transcript	c.911G>C	p.Gly304Ala	missense_variant	2/2		NM_007160.4	P1
OR2H2	ENST00000383640.4 linkuse as main transcript	c.911G>C	p.Gly304Ala	missense_variant	1/1			P1
GABBR1	ENST00000355973.7 linkuse as main transcript	c.*2+14686C>G		intron_variant		2			Q9UBS5-2

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

152126

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000122

AC:

AN:

245948

Hom.:

AF XY:

0.0000149

AC XY:

AN XY:

134122

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000290

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:

0.00000907

Gnomad OTH exome

AF:

0.000165

GnomAD4 exome

AF:

0.0000166

AC:

AN:

662192

Hom.:

Cov.:

AF XY:

0.0000139

AC XY:

AN XY:

358756

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000457

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000142

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000183

Gnomad4 OTH exome

AF:

0.0000292

GnomAD4 genome

AF:

0.0000329

AC:

AN:

152126

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74326

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000655

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000162

Hom.:

Bravo

AF:

0.0000189

ExAC

AF:

0.00000851

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

Jan 26, 2022

The c.911G>C (p.G304A) alteration is located in exon 1 (coding exon 1) of the OR2H2 gene. This alteration results from a G to C substitution at nucleotide position 911, causing the glycine (G) at amino acid position 304 to be replaced by an alanine (A). 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

0.12

BayesDel_addAF

Benign

-0.42

BayesDel_noAF

Benign

-0.66

CADD

Benign

6.6

DANN

Benign

0.50

DEOGEN2

Benign

0.012

T;T

Eigen

Benign

-0.95

Eigen_PC

Benign

-0.96

FATHMM_MKL

Benign

0.20

M_CAP

Benign

0.0044

MetaRNN

Benign

0.057

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.2

L;L

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.21

PROVEAN

Benign

-1.8

.;N

REVEL

Benign

0.011

Sift

Benign

0.20

.;T

Sift4G

Benign

0.27

.;T

Polyphen

0.015

B;B

Vest4

0.093

MutPred

0.38

Loss of disorder (P = 0.1023);Loss of disorder (P = 0.1023);

MVP

0.072

MPC

0.24

ClinPred

0.023

GERP RS

3.5

Varity_R

0.046

gMVP

0.15

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

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