chr6-29397174-G-T

Position:

• chr6-29397174-G-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_013936.4(OR12D2):​c.475G>T​(p.Val159Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,460,754 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/18 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V159I) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: OR12D2 NM_013936.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.49

Genes affected

OR12D2 (HGNC:8178): (olfactory receptor family 12 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. This olfactory receptor gene is a segregating pseudogene, where some individuals have an allele that encodes a functional olfactory receptor, while other individuals have an allele encoding a protein that is predicted to be non-functional. [provided by RefSeq, Jun 2015]

OR5V1 (HGNC:13972): (olfactory receptor family 5 subfamily V 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 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=0.039022803).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
OR12D2	NM_013936.4	c.475G>T	p.Val159Leu	missense_variant	2/2	ENST00000642051.1	NP_039224.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
OR12D2	ENST00000642051.1	c.475G>T	p.Val159Leu	missense_variant	2/2		NM_013936.4	ENSP00000493463.1
OR12D2	ENST00000623183.1	c.475G>T	p.Val159Leu	missense_variant	1/1	6		ENSP00000485112.1
OR5V1	ENST00000377154.1	c.-83+25433C>A		intron_variant		6		ENSP00000366359.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1460754 Hom.: 0 Cov.: 45 AF XY: 0.00 AC XY: 0 AN XY: 726696

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: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.38	T
BayesDel_noAF	Benign	-0.79
CADD	Benign	0.12
DANN	Benign	0.84
DEOGEN2	Benign	0.0021	T;T
Eigen	Benign	-1.4
Eigen_PC	Benign	-1.5
FATHMM_MKL	Benign	0.023	N
LIST_S2	Benign	0.26	.;T
M_CAP	Benign	0.0029	T
MetaRNN	Benign	0.039	T;T
MetaSVM	Benign	-0.96	T
MutationAssessor	Benign	0.52	N;N
PrimateAI	Benign	0.18	T
Polyphen		0.023	B;B
MutPred		0.11		Gain of methylation at R163 (P = 0.2209);Gain of methylation at R163 (P = 0.2209);
ClinPred		0.40	T
GERP RS		-3.1
Varity_R		0.036
gMVP		0.12

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs2073151; hg19: chr6-29364951;