11-6795167-T-C

Position:

• chr11-6795167-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_003696.3(OR6A2):​c.542A>G​(p.His181Arg) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: OR6A2 NM_003696.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.80

Genes affected

OR6A2 (HGNC:15301): (olfactory receptor family 6 subfamily A 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]

ACMG classification

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/exons	MANE	UniProt
OR6A2	NM_003696.3	c.542A>G	p.His181Arg	missense_variant	2/2	ENST00000641196.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
OR6A2	ENST00000641196.1	c.542A>G	p.His181Arg	missense_variant	2/2		NM_003696.3	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 16, 2023

The c.542A>G (p.H181R) alteration is located in exon 1 (coding exon 1) of the OR6A2 gene. This alteration results from a A to G substitution at nucleotide position 542, causing the histidine (H) at amino acid position 181 to be replaced by an arginine (R). 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	Pathogenic	0.88
BayesDel_addAF	Benign	-0.016	T
BayesDel_noAF	Benign	-0.26
CADD	Uncertain	26
DANN	Uncertain	1.0
DEOGEN2	Benign	0.017	T;T
Eigen	Pathogenic	0.70
Eigen_PC	Uncertain	0.61
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Uncertain	0.86	.;D
M_CAP	Benign	0.0047	T
MetaRNN	Uncertain	0.63	D;D
MetaSVM	Benign	-0.98	T
MutationAssessor	Pathogenic	3.6	H;H
MutationTaster	Benign	0.54	N
PrimateAI	Benign	0.26	T
PROVEAN	Pathogenic	-7.1	.;D
REVEL	Benign	0.14
Sift	Uncertain	0.010	.;D
Sift4G	Pathogenic	0.0010	.;D
Polyphen		1.0	D;D
Vest4		0.47
MutPred		0.54		Loss of catalytic residue at F182 (P = 0.1314);Loss of catalytic residue at F182 (P = 0.1314);
MVP		0.36
MPC		0.023
ClinPred		1.0	D
GERP RS		5.0
Varity_R		0.92
gMVP		0.46

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr11-6816398;