9-135547961-G-A

Position:

chr9-135547961-G-A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_014582.3(OBP2A):c.368G>A(p.Arg123His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000286 in 1,610,932 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000029 ( 0 hom. )

Consequence

OBP2A
NM_014582.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0890

Variant links:

Genes affected

OBP2A (HGNC:23380): (odorant binding protein 2A) This gene encodes a small extracellular protein belonging to the lipocalin superfamily. The protein is thought to transport small, hydrophobic, volatile molecules or odorants through the nasal mucus to olfactory receptors, and may also function as a scavenger of highly concentrated or toxic odors. The protein is expressed as a monomer in the nasal mucus, and can bind diverse types of odorants with a higher affinity for aldehydes and fatty acids. This gene and a highly similar family member are located in a cluster of lipocalin genes on chromosome 9. Alternatively spliced transcript variants have been described, but their biological validity has not been determined. [provided by RefSeq, Jul 2008]

OBP2A links:

OBP2A (HGNC:):

OBP2A links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.05971974).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
OBP2A	NM_014582.3 linkuse as main transcript	c.368G>A	p.Arg123His	missense_variant	4/7	ENST00000371776.6	NP_055397.1	Q9NY56-1
OBP2A	NM_001293189.2 linkuse as main transcript	c.368G>A	p.Arg123His	missense_variant	4/7		NP_001280118.1	Q9NY56Q5T8A5B7ZLH4
OBP2A	NM_001293193.2 linkuse as main transcript	c.234G>A	p.Ala78Ala	synonymous_variant	3/6		NP_001280122.1	Q9NY56Q5T8A4
OBP2A	NR_120603.2 linkuse as main transcript	n.423G>A		non_coding_transcript_exon_variant	4/7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
OBP2A	ENST00000371776.6 linkuse as main transcript	c.368G>A	p.Arg123His	missense_variant	4/7	1	NM_014582.3	ENSP00000360841.1		Q9NY56-1

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152216

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000363

AC:

AN:

247948

Hom.:

AF XY:

0.0000298

AC XY:

AN XY:

134090

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000176

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000331

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000179

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000288

AC:

AN:

1458716

Hom.:

Cov.:

AF XY:

0.0000276

AC XY:

AN XY:

725696

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000226

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.0000188

Gnomad4 NFE exome

AF:

0.0000243

Gnomad4 OTH exome

AF:

0.0000498

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152216

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74356

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000480

Hom.:

Bravo

AF:

0.0000416

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 30, 2022

The c.368G>A (p.R123H) alteration is located in exon 4 (coding exon 4) of the OBP2A gene. This alteration results from a G to A substitution at nucleotide position 368, causing the arginine (R) at amino acid position 123 to be replaced by a histidine (H). 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

0.090

BayesDel_addAF

Benign

-0.53

BayesDel_noAF

Benign

-0.75

CADD

Benign

4.9

DANN

Benign

0.68

DEOGEN2

Benign

0.0011

.;.;T;T

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.0049

LIST_S2

Benign

0.25

T;T;.;T

M_CAP

Benign

0.0016

MetaRNN

Benign

0.060

T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-0.69

.;.;N;N

PrimateAI

Benign

0.34

PROVEAN

Benign

0.98

.;N;N;N

REVEL

Benign

0.031

Sift

Benign

0.54

.;T;T;T

Sift4G

Benign

0.13

T;T;T;T

Polyphen

0.94, 0.0010

.;P;B;B

Vest4

0.033

MutPred

0.35

Loss of MoRF binding (P = 0.0033);Loss of MoRF binding (P = 0.0033);Loss of MoRF binding (P = 0.0033);Loss of MoRF binding (P = 0.0033);

MVP

0.088

MPC

0.31

ClinPred

0.053

GERP RS

1.1

Varity_R

0.16

gMVP

0.14

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