11-54603251-C-T

Variant names:

• chr11-54603251-C-T
• rs150447323
• NM_001004703.1:c.748G>A

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001004703.1(OR4C46):​c.748G>A​(p.Val250Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,460,946 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts 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. V250L) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 30)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: OR4C46 NM_001004703.1 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0720
• Publications: 0 publications found

Genes affected

OR4C46 (HGNC:31271): (olfactory receptor family 4 subfamily C member 46) 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

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.17794153).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001004703.1. 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
	OR4C46	NM_001004703.1	MANE Select	c.748G>A	p.Val250Met	missense	Exon 1 of 1	NP_001004703.1	A6NHA9

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	OR4C46	ENST00000328188.1	TSL:6 MANE Select	c.748G>A	p.Val250Met	missense	Exon 1 of 1	ENSP00000329056.1	A6NHA9

Frequencies

GnomAD3 genomes Cov.: 30

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1460946 Hom.: 0 Cov.: 40 AF XY: 0.00000138 AC XY: 1 AN XY: 726852

African (AFR) AF: 0.00 AC: 0 AN: 33460

American (AMR) AF: 0.00 AC: 0 AN: 44714

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26124

East Asian (EAS) AF: 0.00 AC: 0 AN: 39688

South Asian (SAS) AF: 0.00 AC: 0 AN: 86234

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53418

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5760

European-Non Finnish (NFE) AF: 9.00e-7 AC: 1 AN: 1111188

Other (OTH) AF: 0.00 AC: 0 AN: 60360

GnomAD4 genome Cov.: 30

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_noAF	Benign	-0.74
CADD	Benign	22
DANN	Benign	0.95
DEOGEN2	Benign	0.011	T
LIST_S2	Benign	0.76	T
MetaRNN	Benign	0.18	T
PhyloP100		-0.072
PROVEAN	Uncertain	-2.4	N
Sift	Uncertain	0.0090	D
Sift4G	Uncertain	0.043	D
Vest4		0.30
gMVP		0.69

Splicing

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

Other links and lift over

dbSNP: rs150447323; hg19: chr11-51516029;