Genetic Variant OR4F21:p.Gly152Ala (chr8-166570-C-G) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 1P and 0B. PP3

The NM_001005504.1(OR4F21):c.455G>C(p.Gly152Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00022 ( 1 hom., cov: 6)

Exomes 𝑓: 0.000051 ( 7 hom. )

Failed GnomAD Quality Control

Consequence

OR4F21
NM_001005504.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.903

Variant links:

Genes affected

OR4F21 (HGNC:19583): (olfactory receptor family 4 subfamily F member 21) 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]

OR4F21 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.756

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
OR4F21	NM_001005504.1 link	c.455G>C	p.Gly152Ala	missense_variant	Exon 1 of 1	ENST00000320901.4	NP_001005504.1	O95013

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
OR4F21	ENST00000320901.4 link	c.455G>C	p.Gly152Ala	missense_variant	Exon 1 of 1	6	NM_001005504.1	ENSP00000318878.3		O95013

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

50182

Hom.:

Cov.:

FAILED QC

Gnomad AFR

AF:

0.000706

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.0000510

AC:

AN:

568390

Hom.:

Cov.:

AF XY:

0.0000295

AC XY:

AN XY:

304630

show subpopulations

Gnomad4 AFR exome

AF:

0.00164

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000332

GnomAD4 genome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.000219

AC:

AN:

50182

Hom.:

Cov.:

AF XY:

0.000297

AC XY:

AN XY:

23564

show subpopulations

Gnomad4 AFR

AF:

0.000706

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:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000337

Hom.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 22, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.455G>C (p.G152A) alteration is located in exon 1 (coding exon 1) of the OR4F21 gene. This alteration results from a G to C substitution at nucleotide position 455, causing the glycine (G) at amino acid position 152 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

0.13

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Benign

-0.50

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.031

Eigen

Benign

0.11

Eigen_PC

Benign

-0.11

FATHMM_MKL

Benign

0.080

LIST_S2

Benign

0.79

M_CAP

Benign

0.0016

MetaRNN

Pathogenic

0.76

MetaSVM

Benign

-0.95

MutationAssessor

Benign

1.8

PrimateAI

Uncertain

0.62

PROVEAN

Pathogenic

-5.8

REVEL

Benign

0.12

Sift

Uncertain

0.0050

Sift4G

Uncertain

0.0050

Polyphen

1.0

Vest4

0.65

MutPred

0.71

Gain of catalytic residue at G152 (P = 0.1485);

MVP

0.22

ClinPred

0.94

GERP RS

2.0

Varity_R

0.44

gMVP

0.12

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