14-21634553-A-G

Position:

• chr14-21634553-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_001005466.2(OR10G2):​c.290T>C​(p.Ile97Thr) variant causes a missense change. The variant allele was found at a frequency of 0.00000479 in 1,461,856 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000048 (0 hom.)
• Consequence: OR10G2 NM_001005466.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.15

Genes affected

OR10G2 (HGNC:8170): (olfactory receptor family 10 subfamily G 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 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.933

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
OR10G2	NM_001005466.2	c.290T>C	p.Ile97Thr	missense_variant	1/1	ENST00000542433.1	NP_001005466.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
OR10G2	ENST00000542433.1	c.290T>C	p.Ile97Thr	missense_variant	1/1		NM_001005466.2	ENSP00000445383	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000479 AC: 7 AN: 1461856 Hom.: 0 Cov.: 67 AF XY: 0.00000688 AC XY: 5 AN XY: 727224

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: 0.00000630

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

Bravo AF: 0.00000378

TwinsUK AF: 0.000270 AC: 1

ALSPAC AF: 0.000259 AC: 1

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

Oct 27, 2022

The c.290T>C (p.I97T) alteration is located in exon 1 (coding exon 1) of the OR10G2 gene. This alteration results from a T to C substitution at nucleotide position 290, causing the isoleucine (I) at amino acid position 97 to be replaced by a threonine (T). 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
BayesDel_addAF	Uncertain	0.014	T
BayesDel_noAF	Benign	-0.22
CADD	Benign	19
DANN	Benign	0.93
Eigen	Benign	-0.023
Eigen_PC	Benign	-0.082
FATHMM_MKL	Uncertain	0.95	D
M_CAP	Benign	0.0032	T
MetaRNN	Pathogenic	0.93	D
MetaSVM	Benign	-1.1	T
MutationTaster	Benign	1.0	N
PrimateAI	Benign	0.42	T
PROVEAN	Pathogenic	-4.8	D
REVEL	Benign	0.19
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Vest4		0.82
MutPred		0.70		Loss of stability (P = 0.0262);
MVP		0.14
MPC		0.049
ClinPred		0.87	D
GERP RS		3.8
gMVP		0.10

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: rs778765896; hg19: chr14-22102709;