1-248593420-C-T

Position:

• chr1-248593420-C-T

Variant summary

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

The NM_001004693.2(OR2T10):​c.349G>A​(p.Ala117Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000049 in 1,429,768 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 28)
  • Exomes 𝑓: 0.0000049 (0 hom.)
• Consequence: OR2T10 NM_001004693.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -1.07

Genes affected

OR2T10 (HGNC:19573): (olfactory receptor family 2 subfamily T member 10) 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=0.05425796).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
OR2T10	NM_001004693.2	c.349G>A	p.Ala117Thr	missense_variant	2/2	ENST00000642090.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
OR2T10	ENST00000642090.1	c.349G>A	p.Ala117Thr	missense_variant	2/2		NM_001004693.2	P1
OR2T10	ENST00000330500.4	c.349G>A	p.Ala117Thr	missense_variant	1/1			P1

Frequencies

GnomAD3 genomes Cov.: 28

GnomAD4 exome AF: 0.00000490 AC: 7 AN: 1429768 Hom.: 0 Cov.: 32 AF XY: 0.00000562 AC XY: 4 AN XY: 711528

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.0000388

Gnomad4 EAS exome AF: 0.0000258

Gnomad4 SAS exome AF: 0.0000119

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000275

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 28

ExAC AF: 0.00000842 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

Jan 03, 2024

The c.349G>A (p.A117T) alteration is located in exon 1 (coding exon 1) of the OR2T10 gene. This alteration results from a G to A substitution at nucleotide position 349, causing the alanine (A) at amino acid position 117 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
AlphaMissense	Benign	0.097
BayesDel_addAF	Benign	-0.33	T
BayesDel_noAF	Benign	-0.71
CADD	Benign	3.7
DANN	Benign	0.84
DEOGEN2	Benign	0.0074	T;T
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.2
FATHMM_MKL	Benign	0.011	N
LIST_S2	Benign	0.77	.;T
M_CAP	Benign	0.0014	T
MetaRNN	Benign	0.054	T;T
MetaSVM	Benign	-0.95	T
MutationAssessor	Uncertain	2.1	M;M
MutationTaster	Benign	1.0	N
PrimateAI	Benign	0.21	T
PROVEAN	Benign	-1.3	.;N
REVEL	Benign	0.023
Sift	Benign	0.30	.;T
Sift4G	Benign	0.20	.;T
Polyphen		0.53	P;P
Vest4		0.21
MutPred		0.34		Loss of stability (P = 0.0942);Loss of stability (P = 0.0942);
MVP		0.092
MPC		0.066
ClinPred		0.098	T
GERP RS		-1.6
Varity_R		0.065
gMVP		0.072

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: rs772598617; hg19: chr1-248756721;