Genetic Variant OR6F1:p.Ile289Thr (chr1-247711890-A-G) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001005286.2(OR6F1):c.866T>C(p.Ile289Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000479 in 1,461,658 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000048 ( 0 hom. )

Consequence

OR6F1
NM_001005286.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.80

Publications

0 publications found

Variant links:

Genes affected

OR6F1 (HGNC:15027): (olfactory receptor family 6 subfamily F member 1) 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]

OR6F1 links:

ENSG00000239395 (HGNC:):

ENSG00000239395 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
OR6F1	NM_001005286.2 link	c.866T>C	p.Ile289Thr	missense_variant	Exon 3 of 3	ENST00000641470.1	NP_001005286.1	Q8NGZ6A0A126GV68

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
OR6F1	ENST00000641470.1 link	c.866T>C	p.Ile289Thr	missense_variant	Exon 3 of 3		NM_001005286.2	ENSP00000493342.1		Q8NGZ6
ENSG00000239395	ENST00000419891.1 link	c.*235T>C		3_prime_UTR_variant	Exon 3 of 3	3		ENSP00000493458.1		A0A286YFN4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000479

AC:

AN:

1461658

Hom.:

Cov.:

AF XY:

0.00000688

AC XY:

AN XY:

727158

show subpopulations

African (AFR)

AF:

0.000119

AC:

AN:

33474

American (AMR)

AF:

0.00

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86250

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.000347

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111806

Other (OTH)

AF:

0.0000166

AC:

AN:

60388

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.454

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.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

May 17, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.866T>C (p.I289T) alteration is located in exon 1 (coding exon 1) of the OR6F1 gene. This alteration results from a T to C substitution at nucleotide position 866, causing the isoleucine (I) at amino acid position 289 to be replaced by a threonine (T). 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

0.67

BayesDel_addAF

Pathogenic

0.19

BayesDel_noAF

Uncertain

0.040

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.051

T;T;T

Eigen

Uncertain

0.39

Eigen_PC

Uncertain

0.28

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.87

.;.;D

M_CAP

Benign

0.014

MetaRNN

Uncertain

0.74

D;D;D

MetaSVM

Uncertain

-0.26

MutationAssessor

Pathogenic

3.6

H;H;H

PhyloP100

7.8

PrimateAI

Benign

0.22

PROVEAN

Uncertain

-4.1

.;.;D

REVEL

Uncertain

0.34

Sift

Pathogenic

0.0

.;.;D

Sift4G

Pathogenic

0.0010

.;.;D

Polyphen

0.68

P;P;P

Vest4

0.66

MutPred

0.64

Loss of stability (P = 0.0123);Loss of stability (P = 0.0123);Loss of stability (P = 0.0123);

MVP

0.69

MPC

0.59

ClinPred

0.97

GERP RS

3.5

Varity_R

0.82

gMVP

0.87

Mutation Taster

=64/36

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

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1-247711890-A-G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over