chr7-144074565-G-T

Position:

• chr7-144074565-G-T

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM2 BP4_Strong BP6_Moderate

The NM_001386096.1(OR2A25):​c.346G>T​(p.Val116Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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 Likely benign (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: OR2A25 NM_001386096.1 missense
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.288

Genes affected

OR2A25 (HGNC:19562): (olfactory receptor family 2 subfamily A member 25) 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 Likely_benign. Variant got -4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.065833986).
• BP6: Variant 7-144074565-G-T is Benign according to our data. Variant chr7-144074565-G-T is described in ClinVar as [Likely_benign]. Clinvar id is 2350080.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
OR2A25	NM_001386096.1	c.346G>T	p.Val116Leu	missense_variant	2/2	ENST00000641663.1
OR2A25	NM_001004488.2	c.346G>T	p.Val116Leu	missense_variant	2/2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
OR2A25	ENST00000641663.1	c.346G>T	p.Val116Leu	missense_variant	2/2		NM_001386096.1	P1
OR2A25	ENST00000408898.2	c.346G>T	p.Val116Leu	missense_variant	1/1			P1
OR2A25	ENST00000641441.1	c.346G>T	p.Val116Leu	missense_variant	2/2			P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 53

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 21, 2021

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.18
BayesDel_addAF	Benign	-0.31	T
BayesDel_noAF	Benign	-0.68
CADD	Benign	21
DANN	Benign	0.92
DEOGEN2	Benign	0.0047	T;T;T
Eigen	Benign	-0.85
Eigen_PC	Benign	-0.81
FATHMM_MKL	Benign	0.55	D
M_CAP	Benign	0.0029	T
MetaRNN	Benign	0.066	T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.7	L;L;L
MutationTaster	Benign	1.0	N
PrimateAI	Benign	0.25	T
Polyphen		0.0010	B;B;B
Vest4		0.084
MutPred		0.31		Loss of catalytic residue at V116 (P = 0.1108);Loss of catalytic residue at V116 (P = 0.1108);Loss of catalytic residue at V116 (P = 0.1108);
MVP		0.10
MPC		0.013
ClinPred		0.12	T
GERP RS		2.9
Varity_R		0.38
gMVP		0.21

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

Other links and lift over

dbSNP: rs2051094930; hg19: chr7-143771658;