1-248638567-G-T

Variant names:

• chr1-248638567-G-T
• rs752463199
• NM_001001827.2:c.692C>A

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_001001827.2(OR2T35):​c.692C>A​(p.Ala231Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. 13/22 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. A231V) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 19)
  • Exomes 𝑓: 0.0000063 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: OR2T35 NM_001001827.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.177
• Publications: 2 publications found

Genes affected

OR2T35 (HGNC:31257): (olfactory receptor family 2 subfamily T member 35) 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]

ENSG00000229255 (HGNC:):

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.06791064).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001001827.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	OR2T35	NM_001001827.2	MANE Select	c.692C>A	p.Ala231Asp	missense	Exon 2 of 2	NP_001001827.1	Q8NGX2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	OR2T35	ENST00000641268.1	MANE Select	c.692C>A	p.Ala231Asp	missense	Exon 2 of 2	ENSP00000492995.1	Q8NGX2
	ENSG00000229255	ENST00000450847.2	TSL:2	n.195+4099C>A		intron	N/A
	ENSG00000229255	ENST00000825060.1		n.242+4099C>A		intron	N/A

Frequencies

GnomAD3 genomes Cov.: 19

GnomAD2 exomes AF: 0.0000164 AC: 4 AN: 243892 AF XY: 0.0000227

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 0.00000628 AC: 9 AN: 1433744 Hom.: 0 Cov.: 32 AF XY: 0.00000981 AC XY: 7 AN XY: 713848

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 30898

American (AMR) AF: 0.00 AC: 0 AN: 43986

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25836

East Asian (EAS) AF: 0.0000254 AC: 1 AN: 39328

South Asian (SAS) AF: 0.0000938 AC: 8 AN: 85272

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52250

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5688

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1091098

Other (OTH) AF: 0.00 AC: 0 AN: 59388

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 19

ExAC AF: 0.0000168 AC: 2

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Benign	-0.41	T
BayesDel_noAF	Benign	-0.63
CADD	Benign	16
DANN	Uncertain	0.98
DEOGEN2	Benign	0.029	T
Eigen	Benign	-0.71
Eigen_PC	Benign	-0.79
FATHMM_MKL	Benign	0.063	N
LIST_S2	Benign	0.34	T
M_CAP	Benign	0.00081	T
MetaRNN	Benign	0.068	T
MetaSVM	Benign	-0.97	T
MutationAssessor	Uncertain	2.7	M
PhyloP100		-0.18
PrimateAI	Benign	0.21	T
PROVEAN	Uncertain	-4.1	D
REVEL	Benign	0.041
Sift	Uncertain	0.026	D
Sift4G	Benign	0.14	T
Polyphen		0.031	B
Vest4		0.31
MutPred		0.33		Gain of ubiquitination at K236 (P = 0.029)
MVP		0.35
MPC		2.7
ClinPred		0.11	T
GERP RS		2.0
Varity_R		0.57
gMVP		0.16
Mutation Taster		=97/3	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs752463199; hg19: chr1-248801868;