11-6026784-T-G

Position:

chr11-6026784-T-G

Variant summary

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

The NM_001388488.1(OR56A1):c.909A>C(p.Lys303Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000199 in 1,609,160 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000018 ( 0 hom. )

Consequence

OR56A1
NM_001388488.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -2.50

Variant links:

Genes affected

OR56A1 (HGNC:14781): (olfactory receptor family 56 subfamily A member 1) 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]

OR56A1 links:

LOC107984303 (HGNC:):

LOC107984303 links:

Genome browser will be placed here

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=0.14359438).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
OR56A1	NM_001388488.1 linkuse as main transcript	c.909A>C	p.Lys303Asn	missense_variant	2/2	ENST00000641900.1
LOC107984303	XR_001748102.2 linkuse as main transcript	n.89+4696T>G		intron_variant, non_coding_transcript_variant
OR56A1	NM_001001917.5 linkuse as main transcript	c.909A>C	p.Lys303Asn	missense_variant	2/2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Appris
OR56A1	ENST00000641900.1 linkuse as main transcript	c.909A>C	p.Lys303Asn	missense_variant	2/2	NM_001388488.1	P1
OR56A1	ENST00000641423.1 linkuse as main transcript	c.909A>C	p.Lys303Asn	missense_variant	2/2		P1
OR56A1	ENST00000641938.1 linkuse as main transcript	c.909A>C	p.Lys303Asn	missense_variant	1/1		P1

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152234

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000284

AC:

AN:

246700

Hom.:

AF XY:

0.0000375

AC XY:

AN XY:

133228

show subpopulations

Gnomad AFR exome

AF:

0.0000617

Gnomad AMR exome

AF:

0.0000297

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000672

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000269

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000178

AC:

AN:

1456926

Hom.:

Cov.:

AF XY:

0.0000304

AC XY:

AN XY:

724618

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000228

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000351

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000171

Gnomad4 OTH exome

AF:

0.0000332

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152234

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74378

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000580

Hom.:

Bravo

AF:

0.0000529

ExAC

AF:

0.0000247

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

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

Nov 27, 2023

The c.921A>C (p.K307N) alteration is located in exon 1 (coding exon 1) of the OR56A1 gene. This alteration results from a A to C substitution at nucleotide position 921, causing the lysine (K) at amino acid position 307 to be replaced by an asparagine (N). 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

Pathogenic

0.75

BayesDel_addAF

Benign

-0.34

BayesDel_noAF

Benign

-0.54

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.14

.;.;.;T

Eigen

Benign

-0.74

Eigen_PC

Benign

-0.81

FATHMM_MKL

Benign

0.094

LIST_S2

Benign

0.78

.;.;T;T

M_CAP

Benign

0.021

MetaRNN

Benign

0.14

T;T;T;T

MetaSVM

Benign

-0.97

MutationAssessor

Uncertain

2.5

.;.;.;M

MutationTaster

Benign

1.0

PrimateAI

Benign

0.30

PROVEAN

Uncertain

-2.9

.;.;.;D

REVEL

Benign

0.092

Sift

Benign

0.031

.;.;.;D

Sift4G

Uncertain

0.020

.;.;.;D

Polyphen

0.092

.;.;.;B

Vest4

0.20

MutPred

0.51

.;.;.;Loss of methylation at K307 (P = 0.0112);

MVP

0.32

MPC

0.27

ClinPred

0.26

GERP RS

-1.2

Varity_R

0.28

gMVP

0.28

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