19-9186475-G-C

Position:

• chr19-9186475-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_175883.4(OR7D2):​c.694G>C​(p.Gly232Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,758 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: OR7D2 NM_175883.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.793

Genes affected

OR7D2 (HGNC:8378): (olfactory receptor family 7 subfamily D member 2) 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 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.07185823).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
OR7D2	NM_175883.4	c.694G>C	p.Gly232Arg	missense_variant	3/3	ENST00000641288.2	NP_787079.1
OR7D2	NM_001386112.1	c.694G>C	p.Gly232Arg	missense_variant	2/2		NP_001373041.1
OR7D2	XM_047438317.1	c.694G>C	p.Gly232Arg	missense_variant	2/2		XP_047294273.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
OR7D2	ENST00000641288.2	c.694G>C	p.Gly232Arg	missense_variant	3/3		NM_175883.4	ENSP00000493200.1
OR7D2	ENST00000344248.4	c.694G>C	p.Gly232Arg	missense_variant	1/1	6		ENSP00000345563.2
OR7D2	ENST00000642043.1	c.694G>C	p.Gly232Arg	missense_variant	2/2			ENSP00000492939.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461758 Hom.: 0 Cov.: 34 AF XY: 0.00000138 AC XY: 1 AN XY: 727190

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

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

Dec 15, 2023

The c.694G>C (p.G232R) alteration is located in exon 1 (coding exon 1) of the OR7D2 gene. This alteration results from a G to C substitution at nucleotide position 694, causing the glycine (G) at amino acid position 232 to be replaced by an arginine (R). 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	0.072
BayesDel_addAF	Benign	-0.34	T
BayesDel_noAF	Benign	-0.72
CADD	Benign	7.4
DANN	Benign	0.26
DEOGEN2	Benign	0.0088	T;T;T
Eigen	Benign	-1.2
Eigen_PC	Benign	-1.2
FATHMM_MKL	Benign	0.062	N
LIST_S2	Benign	0.41	.;.;T
M_CAP	Benign	0.00072	T
MetaRNN	Benign	0.072	T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.2	L;L;L
PrimateAI	Benign	0.17	T
PROVEAN	Benign	-1.4	.;.;N
REVEL	Benign	0.018
Sift	Benign	0.28	.;.;T
Sift4G	Benign	0.48	.;.;T
Polyphen		0.0060	B;B;B
Vest4		0.071
MutPred		0.34		Gain of solvent accessibility (P = 0.0037);Gain of solvent accessibility (P = 0.0037);Gain of solvent accessibility (P = 0.0037);
MVP		0.20
MPC		0.084
ClinPred		0.31	T
GERP RS		-0.25
Varity_R		0.17

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr19-9297151;