7-141919252-T-G

Position:

chr7-141919252-T-G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001001656.3(OR9A4):c.377T>G(p.Val126Gly) variant causes a missense change. The variant allele was found at a frequency of 0.0000539 in 1,614,052 control chromosomes in the GnomAD database, including 1 homozygotes. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00025 ( 1 hom., cov: 32)

Exomes 𝑓: 0.000034 ( 0 hom. )

Consequence

OR9A4
NM_001001656.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.46

Variant links:

Genes affected

OR9A4 (HGNC:15095): (olfactory receptor family 9 subfamily A 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]

OR9A4 links:

MGAM (HGNC:7043): (maltase-glucoamylase) This gene encodes maltase-glucoamylase, which is a brush border membrane enzyme that plays a role in the final steps of digestion of starch. The protein has two catalytic sites identical to those of sucrase-isomaltase, but the proteins are only 59% homologous. Both are members of glycosyl hydrolase family 31, which has a variety of substrate specificities. [provided by RefSeq, Jul 2008]

MGAM links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
OR9A4	NM_001001656.3 linkuse as main transcript	c.377T>G	p.Val126Gly	missense_variant	2/2	ENST00000641559.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
OR9A4	ENST00000641559.1 linkuse as main transcript	c.377T>G	p.Val126Gly	missense_variant	2/2		NM_001001656.3	P1
OR9A4	ENST00000548136.1 linkuse as main transcript	c.377T>G	p.Val126Gly	missense_variant	1/1			P1
MGAM	ENST00000465654.5 linkuse as main transcript	c.-180+11384T>G		intron_variant		3
MGAM	ENST00000497554.1 linkuse as main transcript	n.37-10525T>G		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes

AF:

0.000250

AC:

AN:

152166

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000917

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:

0.0000477

AC:

AN:

251396

Hom.:

AF XY:

0.0000294

AC XY:

AN XY:

135900

show subpopulations

Gnomad AFR exome

AF:

0.000617

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000335

AC:

AN:

1461886

Hom.:

Cov.:

AF XY:

0.0000316

AC XY:

AN XY:

727244

show subpopulations

Gnomad4 AFR exome

AF:

0.00111

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000540

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.000250

AC:

AN:

152166

Hom.:

Cov.:

AF XY:

0.000256

AC XY:

AN XY:

74348

show subpopulations

Gnomad4 AFR

AF:

0.000917

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:

0.000116

Hom.:

Bravo

AF:

0.000223

ExAC

AF:

0.0000412

AC:

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

May 26, 2024

The c.377T>G (p.V126G) alteration is located in exon 1 (coding exon 1) of the OR9A4 gene. This alteration results from a T to G substitution at nucleotide position 377, causing the valine (V) at amino acid position 126 to be replaced by a glycine (G). 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

0.37

BayesDel_addAF

Benign

-0.034

BayesDel_noAF

Uncertain

0.13

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.16

T;T

Eigen

Uncertain

0.53

Eigen_PC

Uncertain

0.38

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.74

.;T

M_CAP

Benign

0.022

MetaRNN

Uncertain

0.61

D;D

MetaSVM

Benign

-0.34

MutationAssessor

Uncertain

2.6

M;M

MutationTaster

Benign

1.0

PrimateAI

Benign

0.23

PROVEAN

Pathogenic

-6.9

.;D

REVEL

Uncertain

0.43

Sift

Pathogenic

0.0

.;D

Sift4G

Pathogenic

0.0

.;D

Polyphen

1.0

D;D

Vest4

0.35

MVP

0.69

MPC

0.28

ClinPred

0.46

GERP RS

3.8

Varity_R

0.76

gMVP

0.81

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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