Genetic Variant OR5B21:p.Leu113Pro (chr11-58507768-A-G) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_001005218.3(OR5B21):c.338T>C(p.Leu113Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000478 in 1,614,048 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00029 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00050 ( 0 hom. )

Consequence

OR5B21
NM_001005218.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.27

Variant links:

Genes affected

OR5B21 (HGNC:19616): (olfactory receptor family 5 subfamily B 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]

OR5B21 links:

LOC105369313 (HGNC:):

LOC105369313 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.778

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
OR5B21	NM_001005218.3 link	c.338T>C	p.Leu113Pro	missense_variant	Exon 1 of 1	ENST00000360374.3	NP_001005218.1	A6NL26
LOC105369313	XR_007062673.1 link	n.239-2226T>C		intron_variant	Intron 2 of 4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
OR5B21	ENST00000360374.3 link	c.338T>C	p.Leu113Pro	missense_variant	Exon 1 of 1	6	NM_001005218.3	ENSP00000353537.2		A6NL26

Frequencies

GnomAD3 genomes

AF:

0.000289

AC:

AN:

152238

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000287

AC:

AN:

250586

Hom.:

AF XY:

0.000273

AC XY:

AN XY:

135384

show subpopulations

Gnomad AFR exome

AF:

0.0000616

Gnomad AMR exome

AF:

0.0000580

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.000139

Gnomad NFE exome

AF:

0.000566

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.000498

AC:

728

AN:

1461810

Hom.:

Cov.:

AF XY:

0.000496

AC XY:

361

AN XY:

727192

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000348

Gnomad4 FIN exome

AF:

0.000206

Gnomad4 NFE exome

AF:

0.000617

Gnomad4 OTH exome

AF:

0.000397

GnomAD4 genome

AF:

0.000289

AC:

AN:

152238

Hom.:

Cov.:

AF XY:

0.000269

AC XY:

AN XY:

74376

show subpopulations

Gnomad4 AFR

AF:

0.0000482

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000588

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000454

Hom.:

Bravo

AF:

0.000298

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.000519

AC:

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000931

AC:

ExAC

AF:

0.000288

AC:

EpiCase

AF:

0.000491

EpiControl

AF:

0.000534

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 17, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.338T>C (p.L113P) alteration is located in exon 1 (coding exon 1) of the OR5B21 gene. This alteration results from a T to C substitution at nucleotide position 338, causing the leucine (L) at amino acid position 113 to be replaced by a proline (P). 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

0.32

BayesDel_addAF

Benign

0.0012

BayesDel_noAF

Pathogenic

0.15

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.18

Eigen

Pathogenic

0.99

Eigen_PC

Pathogenic

0.90

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Benign

0.75

M_CAP

Benign

0.036

MetaRNN

Pathogenic

0.78

MetaSVM

Benign

-1.1

MutationAssessor

Pathogenic

3.9

PrimateAI

Benign

0.44

PROVEAN

Pathogenic

-6.8

REVEL

Uncertain

0.50

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.95

MVP

0.24

MPC

0.24

ClinPred

0.63

GERP RS

5.2

Varity_R

0.98

gMVP

0.70

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

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