Genetic Variant OR4A16:p.Ile34Val (chr11-55343300-A-G) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001005274.1(OR4A16):c.100A>G(p.Ile34Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000411 in 1,461,454 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 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. I34F) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

OR4A16
NM_001005274.1 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -2.53

Publications

1 publications found

Variant links:

Genes affected

OR4A16 (HGNC:15153): (olfactory receptor family 4 subfamily A member 16) 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]

OR4A16 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.027859926).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
OR4A16	NM_001005274.1 link	c.100A>G	p.Ile34Val	missense_variant	Exon 1 of 1	ENST00000314721.5	NP_001005274.1	Q8NH70A0A126GW87

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
OR4A16	ENST00000314721.5 link	c.100A>G	p.Ile34Val	missense_variant	Exon 1 of 1	6	NM_001005274.1	ENSP00000325128.2		Q8NH70

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000399

AC:

AN:

250836

AF XY:

0.00000738

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS 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:

0.00000411

AC:

AN:

1461454

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

727030

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33466

American (AMR)

AF:

0.00

AC:

AN:

44678

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26130

East Asian (EAS)

AF:

0.00

AC:

AN:

39626

South Asian (SAS)

AF:

0.00

AC:

AN:

86248

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53378

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5760

European-Non Finnish (NFE)

AF:

0.00000360

AC:

AN:

1111792

Other (OTH)

AF:

0.0000166

AC:

AN:

60376

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.467

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.072

BayesDel_addAF

Benign

-0.48

BayesDel_noAF

Benign

-0.75

CADD

Benign

0.083

(source)

DANN

Benign

0.22

DEOGEN2

Benign

0.0025

Eigen

Benign

-2.3

Eigen_PC

Benign

-2.4

FATHMM_MKL

Benign

0.0077

LIST_S2

Benign

0.57

M_CAP

Benign

0.00060

MetaRNN

Benign

0.028

MetaSVM

Benign

-0.94

MutationAssessor

Benign

-0.12

PhyloP100

-2.5

PrimateAI

Benign

0.18

PROVEAN

Benign

-0.53

REVEL

Benign

0.022

Sift

Benign

0.14

Sift4G

Benign

0.28

Polyphen

0.0040

Vest4

0.037

MutPred

0.29

Loss of helix (P = 0.1299);

MVP

0.030

MPC

0.0012

ClinPred

0.081

GERP RS

-4.8

PromoterAI

0.0020

Neutral

(source)

Varity_R

0.043

gMVP

0.026

Mutation Taster

=98/2

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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chr11-55343300-A-G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over