7-144095483-T-G

Position:

• chr7-144095483-T-G

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_001004135.2(OR2A12):​c.376T>G​(p.Cys126Gly) 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 1,461,488 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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: 0.0000014 (0 hom.)
• Consequence: OR2A12 NM_001004135.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.28

Genes affected

OR2A12 (HGNC:15082): (olfactory receptor family 2 subfamily A member 12) 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 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.826

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
OR2A12	NM_001004135.2	c.376T>G	p.Cys126Gly	missense_variant	2/2	ENST00000641592.1	NP_001004135.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
OR2A12	ENST00000641592.1	c.376T>G	p.Cys126Gly	missense_variant	2/2		NM_001004135.2	ENSP00000493157.1
OR2A12	ENST00000408949.2	c.376T>G	p.Cys126Gly	missense_variant	1/1	6		ENSP00000386174.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461488 Hom.: 0 Cov.: 32 AF XY: 0.00000275 AC XY: 2 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: 0.00

Gnomad4 OTH exome AF: 0.0000331

GnomAD4 genome Cov.: 32

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 08, 2024

The c.376T>G (p.C126G) alteration is located in exon 1 (coding exon 1) of the OR2A12 gene. This alteration results from a T to G substitution at nucleotide position 376, causing the cysteine (C) at amino acid position 126 to be replaced by a glycine (G). 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	0.33
BayesDel_addAF	Uncertain	0.050	T
BayesDel_noAF	Benign	-0.17
CADD	Uncertain	24
DANN	Benign	0.97
DEOGEN2	Benign	0.036	T;T
Eigen	Uncertain	0.58
Eigen_PC	Uncertain	0.40
FATHMM_MKL	Pathogenic	0.99	D
M_CAP	Benign	0.024	T
MetaRNN	Pathogenic	0.83	D;D
MetaSVM	Uncertain	-0.25	T
MutationAssessor	Pathogenic	3.4	M;M
PrimateAI	Benign	0.36	T
PROVEAN	Pathogenic	-12	.;D
REVEL	Benign	0.27
Sift	Uncertain	0.0010	.;D
Sift4G	Uncertain	0.0020	.;D
Polyphen		0.98	D;D
Vest4		0.65
MutPred		0.56		Loss of stability (P = 0.0518);Loss of stability (P = 0.0518);
MVP		0.61
MPC		0.28
ClinPred		1.0	D
GERP RS		4.2
Varity_R		0.85
gMVP		0.16

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr7-143792576;