Genetic Variant OR4F4:p.Leu259Arg (chr15-101922338-A-C) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The ENST00000650172.1(OR4F4):c.776T>G(p.Leu259Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. L259P) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000096 ( 2 hom., cov: 22)

Exomes 𝑓: 0.0000051 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

OR4F4
ENST00000650172.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.598

Publications

1 publications found

Variant links:

Genes affected

OR4F4 (HGNC:8301): (olfactory receptor family 4 subfamily F member 4) 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]

OR4F4 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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

BP4

Computational evidence support a benign effect (MetaRNN=0.071817964).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
OR4F4		n.101922338A>C		intragenic_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
OR4F4	ENST00000650172.1 link	c.776T>G	p.Leu259Arg	missense_variant	Exon 1 of 1			ENSP00000497674.1		A0A3B3ITA0

Frequencies

GnomAD3 genomes

AF:

0.0000959

AC:

AN:

125124

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000472

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

GnomAD2 exomes

AF:

0.0000224

AC:

AN:

223384

AF XY:

0.0000247

show subpopulations

Gnomad AFR exome

AF:

0.000487

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

Data not reliable, filtered out with message: AS_VQSR

AF:

0.00000509

AC:

AN:

1375324

Hom.:

Cov.:

AF XY:

0.00000146

AC XY:

AN XY:

687160

show subpopulations

African (AFR)

AF:

0.000204

AC:

AN:

24502

American (AMR)

AF:

0.0000455

AC:

AN:

43936

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25502

East Asian (EAS)

AF:

0.00

AC:

AN:

39160

South Asian (SAS)

AF:

0.00

AC:

AN:

82960

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52486

Middle Eastern (MID)

AF:

0.00

AC:

AN:

3968

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1046058

Other (OTH)

AF:

0.00

AC:

AN:

56752

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.518

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.0000959

AC:

AN:

125124

Hom.:

Cov.:

AF XY:

0.0000983

AC XY:

AN XY:

61026

show subpopulations

African (AFR)

AF:

0.000472

AC:

AN:

25440

American (AMR)

AF:

0.00

AC:

AN:

13338

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3278

East Asian (EAS)

AF:

0.00

AC:

AN:

4924

South Asian (SAS)

AF:

0.00

AC:

AN:

3950

European-Finnish (FIN)

AF:

0.00

AC:

AN:

9614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

61618

Other (OTH)

AF:

0.00

AC:

AN:

1784

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.450

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

ExAC

AF:

0.0000623

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 11, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.722T>G (p.L241R) alteration is located in exon 1 (coding exon 1) of the OR4F4 gene. This alteration results from a T to G substitution at nucleotide position 722, causing the leucine (L) at amino acid position 241 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

0.64

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.35

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.14

T;.

Eigen

Benign

-0.084

Eigen_PC

Benign

-0.29

FATHMM_MKL

Benign

0.19

LIST_S2

Benign

0.85

D;D

M_CAP

Benign

0.0029

MetaRNN

Benign

0.072

T;T

MetaSVM

Benign

-0.97

MutationAssessor

Uncertain

2.1

M;.

PhyloP100

0.60

PrimateAI

Benign

0.30

PROVEAN

Uncertain

-3.5

D;.

REVEL

Benign

0.11

Sift

Uncertain

0.0010

D;.

Sift4G

Uncertain

0.0030

D;.

Polyphen

1.0

D;.

Vest4

0.51

MVP

0.66

ClinPred

0.57

GERP RS

2.6

Varity_R

0.73

gMVP

0.17

Mutation Taster

=100/0

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over