1-248323733-G-C

Variant names:

• chr1-248323733-G-C
• rs750177631
• NM_001004691.1:c.836C>G

Variant summary

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

The NM_001004691.1(OR2M7):​c.836C>G​(p.Thr279Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000479 in 1,461,344 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000048 (0 hom.)
• Consequence: OR2M7 NM_001004691.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.16

Genes affected

OR2M7 (HGNC:19594): (olfactory receptor family 2 subfamily M member 7) 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=0.11951116).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
OR2M7	NM_001004691.1	c.836C>G	p.Thr279Ser	missense_variant	Exon 1 of 1	ENST00000317965.3	NP_001004691.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
OR2M7	ENST00000317965.3	c.836C>G	p.Thr279Ser	missense_variant	Exon 1 of 1	6	NM_001004691.1	ENSP00000324557.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000479 AC: 7 AN: 1461344 Hom.: 0 Cov.: 37 AF XY: 0.00000138 AC XY: 1 AN XY: 726972

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.: 32

Alfa AF: 0.0000282 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Dec 31, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.836C>G (p.T279S) alteration is located in exon 1 (coding exon 1) of the OR2M7 gene. This alteration results from a C to G substitution at nucleotide position 836, causing the threonine (T) at amino acid position 279 to be replaced by a serine (S). 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	0.13
BayesDel_addAF	Benign	-0.33	T
BayesDel_noAF	Benign	-0.70
CADD	Benign	19
DANN	Benign	0.96
DEOGEN2	Benign	0.0056	T
Eigen	Benign	-0.38
Eigen_PC	Benign	-0.55
FATHMM_MKL	Benign	0.032	N
LIST_S2	Benign	0.72	T
M_CAP	Benign	0.00069	T
MetaRNN	Benign	0.12	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.6	L
PrimateAI	Benign	0.18	T
PROVEAN	Uncertain	-3.4	D
REVEL	Benign	0.040
Sift	Benign	0.070	T
Sift4G	Benign	0.13	T
Polyphen		0.68	P
Vest4		0.082
MutPred		0.41		Gain of catalytic residue at T279 (P = 0.087);
MVP		0.25
MPC		0.13
ClinPred		0.55	D
GERP RS		1.6
Varity_R		0.11
gMVP		0.030

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.050		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: rs750177631; hg19: chr1-248487035; COSMIC: COSV99049577;