Genetic Variant NM_012378.2:c.356C>A (chr11-124440730-G-T) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_012378.2(OR8B8):c.356C>A(p.Ala119Glu) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,862 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A119V) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

OR8B8
NM_012378.2 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 6.58

Publications

1 publications found

Variant links:

Genes affected

OR8B8 (HGNC:8477): (olfactory receptor family 8 subfamily B member 8) 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]

OR8B8 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.833

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
OR8B8	NM_012378.2 link	c.356C>A	p.Ala119Glu	missense_variant	Exon 3 of 3	ENST00000642064.1	NP_036510.1	Q15620A0A126GW73

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
OR8B8	ENST00000642064.1 link	c.356C>A	p.Ala119Glu	missense_variant	Exon 3 of 3		NM_012378.2	ENSP00000493014.1		Q15620
OR8B8	ENST00000328064.2 link	c.356C>A	p.Ala119Glu	missense_variant	Exon 1 of 1	6		ENSP00000330280.2		Q15620

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000398

AC:

AN:

251408

AF XY:

0.00000736

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461862

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727236

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111990

Other (OTH)

AF:

0.00

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.86

BayesDel_addAF

Uncertain

0.12

BayesDel_noAF

Uncertain

0.10

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.15

T;T

Eigen

Uncertain

0.63

Eigen_PC

Uncertain

0.41

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.55

.;T

M_CAP

Benign

0.018

MetaRNN

Pathogenic

0.83

D;D

MetaSVM

Uncertain

0.17

MutationAssessor

Pathogenic

4.6

H;H

PhyloP100

6.6

PrimateAI

Benign

0.38

PROVEAN

Pathogenic

-4.7

.;D

REVEL

Uncertain

0.38

Sift

Pathogenic

0.0

.;D

Sift4G

Uncertain

0.0050

.;D

Polyphen

1.0

D;D

Vest4

0.83

MutPred

0.61

Loss of catalytic residue at A119 (P = 0.0982);Loss of catalytic residue at A119 (P = 0.0982);

MVP

0.80

MPC

0.13

ClinPred

1.0

GERP RS

2.6

PromoterAI

-0.096

Neutral

(source)

Varity_R

0.85

gMVP

0.68

Mutation Taster

=90/10

polymorphism

(source)

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

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NM_012378.2:c.356C>A

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over