17-58155479-G-A

Position:

• chr17-58155479-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_001386095.1(OR4D1):​c.326G>A​(p.Gly109Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,884 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: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: OR4D1 NM_001386095.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.687

Genes affected

OR4D1 (HGNC:8293): (olfactory receptor family 4 subfamily D 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]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.41357094).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
OR4D1	NM_001386095.1	c.326G>A	p.Gly109Asp	missense_variant	4/4	ENST00000268912.6	NP_001373024.1
OR4D1	NM_012374.2	c.326G>A	p.Gly109Asp	missense_variant	3/3		NP_036506.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
OR4D1	ENST00000268912.6	c.326G>A	p.Gly109Asp	missense_variant	4/4	6	NM_001386095.1	ENSP00000365451.3
OR4D1	ENST00000641449.1	c.326G>A	p.Gly109Asp	missense_variant	3/3			ENSP00000493234.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461884 Hom.: 0 Cov.: 34 AF XY: 0.00000275 AC XY: 2 AN XY: 727244

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000270

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000468 Hom.: 0

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 28, 2022

The c.326G>A (p.G109D) alteration is located in exon 1 (coding exon 1) of the OR4D1 gene. This alteration results from a G to A substitution at nucleotide position 326, causing the glycine (G) at amino acid position 109 to be replaced by an aspartic acid (D). 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	0.50
BayesDel_addAF	Benign	-0.012	T
BayesDel_noAF	Benign	-0.25
CADD	Benign	23
DANN	Uncertain	1.0
DEOGEN2	Benign	0.0088	T;T
Eigen	Uncertain	0.40
Eigen_PC	Uncertain	0.33
FATHMM_MKL	Benign	0.30	N
LIST_S2	Benign	0.55	.;T
M_CAP	Benign	0.020	T
MetaRNN	Benign	0.41	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.0	M;M
PrimateAI	Benign	0.29	T
PROVEAN	Pathogenic	-5.9	.;D
REVEL	Benign	0.22
Sift	Uncertain	0.0030	.;D
Sift4G	Pathogenic	0.0010	.;D
Polyphen		1.0	D;D
Vest4		0.27
MutPred		0.60		Gain of relative solvent accessibility (P = 0.1259);Gain of relative solvent accessibility (P = 0.1259);
MVP		0.76
MPC		0.29
ClinPred		0.99	D
GERP RS		5.6
Varity_R		0.91
gMVP		0.57

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

Other links and lift over

dbSNP: rs756205768; hg19: chr17-56232840;