Genetic Variant OR4P4:p.Met134Thr (chr11-55638758-T-C) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001004124.2(OR4P4):c.401T>C(p.Met134Thr) variant causes a missense change. The variant allele was found at a frequency of 0.00000295 in 1,353,738 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.0 ( 0 hom., cov: 25)

Exomes 𝑓: 0.0000030 ( 1 hom. )

Failed GnomAD Quality Control

Consequence

OR4P4
NM_001004124.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.28

Variant links:

Genes affected

OR4P4 (HGNC:15180): (olfactory receptor family 4 subfamily P 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]

OR4P4 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.16614991).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
OR4P4	NM_001004124.2 link	c.401T>C	p.Met134Thr	missense_variant	Exon 1 of 1		NP_001004124.1	Q8NGL7
OR4P4	NM_001405919.1 link	c.401T>C	p.Met134Thr	missense_variant	Exon 2 of 2		NP_001392848.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
OR4P4	ENST00000641760.1 link	c.401T>C	p.Met134Thr	missense_variant	Exon 2 of 2			ENSP00000493384.1		Q8NGL7

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

139048

Hom.:

Cov.:

FAILED QC

Gnomad AFR

AF:

0.00

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

GnomAD3 exomes

AF:

0.0000221

AC:

AN:

226284

Hom.:

AF XY:

0.0000326

AC XY:

AN XY:

122590

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000141

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000181

GnomAD4 exome

AF:

0.00000295

AC:

AN:

1353738

Hom.:

Cov.:

AF XY:

0.00000446

AC XY:

AN XY:

673294

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000108

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:

0.00

GnomAD4 genome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

139048

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

67470

Gnomad4 AFR

AF:

0.00

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:

0.0000712

Hom.:

ExAC

AF:

0.00000886

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 12, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.401T>C (p.M134T) alteration is located in exon 1 (coding exon 1) of the OR4P4 gene. This alteration results from a T to C substitution at nucleotide position 401, causing the methionine (M) at amino acid position 134 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

Uncertain

0.44

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.35

CADD

Benign

DANN

Benign

0.89

DEOGEN2

Benign

0.0086

T;T

Eigen

Benign

0.12

Eigen_PC

Benign

0.13

FATHMM_MKL

Uncertain

0.86

LIST_S2

Benign

0.80

.;T

M_CAP

Benign

0.0051

MetaRNN

Benign

0.17

T;T

MetaSVM

Benign

-1.2

MutationAssessor

Pathogenic

3.2

M;M

PrimateAI

Benign

0.38

PROVEAN

Pathogenic

-5.1

.;D

REVEL

Benign

0.16

Sift

Uncertain

0.013

.;D

Sift4G

Uncertain

0.010

.;D

Polyphen

0.047

B;B

Vest4

0.60

MutPred

0.36

Gain of glycosylation at M134 (P = 0.0424);Gain of glycosylation at M134 (P = 0.0424);

MVP

0.49

MPC

0.056

ClinPred

0.47

GERP RS

4.8

Varity_R

0.74

gMVP

0.16

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

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