NM_198074.6:c.851C>A

Variant names:

• chr1-247531661-G-T
• rs1666963604
• NM_198074.6:c.851C>A

Variant summary

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

The NM_198074.6(OR2C3):​c.851C>A​(p.Pro284His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,210 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
• Consequence: OR2C3 NM_198074.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.84
• Publications: 0 publications found

Genes affected

OR2C3 (HGNC:15005): (olfactory receptor family 2 subfamily C member 3) 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]

GCSAML (HGNC:29583): (germinal center associated signaling and motility like) This gene encodes a protein thought to be a signaling molecule associated with germinal centers, the sites of proliferation and differentiation of mature B lymphocytes. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Aug 2013]

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_198074.6. 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
	OR2C3	NM_198074.6	MANE Select	c.851C>A	p.Pro284His	missense	Exon 3 of 3	NP_932340.4
	GCSAML	NM_001281853.1		c.-57+4607G>T		intron	N/A	NP_001268782.1	Q5JQS6-1
	GCSAML	NM_001281834.2		c.-264+4607G>T		intron	N/A	NP_001268763.1	Q5JQS6-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	OR2C3	ENST00000641802.1	MANE Select	c.851C>A	p.Pro284His	missense	Exon 3 of 3	ENSP00000493385.1	Q8N628
	GCSAML	ENST00000527084.5	TSL:1	c.-68+4607G>T		intron	N/A	ENSP00000432118.1	E9PLW0
	GCSAML	ENST00000527541.5	TSL:1	c.-8+4607G>T		intron	N/A	ENSP00000435110.1	E9PLW0

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152210 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 34

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152210 Hom.: 0 Cov.: 32 AF XY: 0.0000134 AC XY: 1 AN XY: 74358

African (AFR) AF: 0.0000241 AC: 1 AN: 41446

American (AMR) AF: 0.00 AC: 0 AN: 15284

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5182

South Asian (SAS) AF: 0.00 AC: 0 AN: 4832

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10624

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68048

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.33
BayesDel_addAF	Uncertain	0.018	T
BayesDel_noAF	Benign	-0.21
CADD	Benign	22
DANN	Uncertain	0.99
DEOGEN2	Benign	0.011	T
Eigen	Uncertain	0.48
Eigen_PC	Benign	0.19
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Benign	0.81	T
M_CAP	Benign	0.0012	T
MetaRNN	Uncertain	0.71	D
MetaSVM	Benign	-1.1	T
MutationAssessor	Pathogenic	4.5	H
PhyloP100		1.8
PrimateAI	Benign	0.18	T
PROVEAN	Pathogenic	-8.7	D
REVEL	Benign	0.20
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.64
MutPred		0.58		Gain of catalytic residue at P284 (P = 0.0214)
MVP		0.67
MPC		0.41
ClinPred		0.99	D
GERP RS		2.8
Varity_R		0.88
gMVP		0.28
Mutation Taster		=94/6	polymorphism

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

Other links and lift over

dbSNP: rs1666963604; hg19: chr1-247694963;