11-4923768-C-G

Variant names:

• chr11-4923768-C-G
• rs910371019
• NM_001005237.1:c.572G>C

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP3

The NM_001005237.1(OR51G1):​c.572G>C​(p.Cys191Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic 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. C191F) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: OR51G1 NM_001005237.1 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.59
• Publications: 1 publications found

Genes affected

OR51G1 (HGNC:14738): (olfactory receptor family 51 subfamily G member 1) 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. This olfactory receptor gene is a segregating pseudogene, where some individuals have an allele that encodes a functional olfactory receptor, while other individuals have an allele encoding a protein that is predicted to be non-functional. [provided by RefSeq, Jun 2015]

MMP26 (HGNC:14249): (matrix metallopeptidase 26) Proteins of the matrix metalloproteinase (MMP) family are involved in the breakdown of extracellular matrix in normal physiological processes, such as embryonic development, reproduction, and tissue remodeling, as well as in disease processes, such as arthritis and metastasis. The encoded preproprotein is proteolytically processed to generate the mature enzyme. This enzyme may degrade collagen type IV, fibronectin, fibrinogen, and beta-casein, and activate matrix metalloproteinase-9 by cleavage. The protein differs from most MMP family members in that it lacks a conserved C-terminal protein domain. The encoded protein may promote cell invasion in multiple human cancers. [provided by RefSeq, May 2016]

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.787

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
OR51G1	NM_001005237.1	c.572G>C	p.Cys191Ser	missense_variant	Exon 1 of 1	ENST00000623849.1	NP_001005237.1
MMP26	NM_021801.5	c.-144-64300C>G		intron_variant	Intron 2 of 7	ENST00000380390.6	NP_068573.2
MMP26	NM_001384608.1	c.-152-64502C>G		intron_variant	Intron 2 of 7		NP_001371537.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
OR51G1	ENST00000623849.1	c.572G>C	p.Cys191Ser	missense_variant	Exon 1 of 1	6	NM_001005237.1	ENSP00000485612.1
MMP26	ENST00000380390.6	c.-144-64300C>G		intron_variant	Intron 2 of 7	5	NM_021801.5	ENSP00000369753.1
MMP26	ENST00000300762.2	c.-152-64502C>G		intron_variant	Intron 2 of 7	1		ENSP00000300762.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.42
BayesDel_addAF	Uncertain	0.016	T
BayesDel_noAF	Benign	-0.21
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Benign	0.0083	T
Eigen	Uncertain	0.65
Eigen_PC	Uncertain	0.56
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Benign	0.72	T
M_CAP	Benign	0.011	T
MetaRNN	Pathogenic	0.79	D
MetaSVM	Benign	-0.86	T
MutationAssessor	Uncertain	2.6	M
PhyloP100		2.6
PrimateAI	Benign	0.31	T
Polyphen		0.93	P
MutPred		0.73		Loss of ubiquitination at K188 (P = 0.064);
ClinPred		1.0	D
GERP RS		4.4
Varity_R		0.48
gMVP		0.33
Mutation Taster		=55/45	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: rs910371019; hg19: chr11-4944998;