chr1-186676873-C-G

Variant names:

• chr1-186676873-C-G
• rs3218622
• NM_000963.4:c.683G>C

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_000963.4(PTGS2):​c.683G>C​(p.Arg228Pro) 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 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. R228S) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: PTGS2 NM_000963.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.27
• Publications: 0 publications found

Genes affected

PTGS2 (HGNC:9605): (prostaglandin-endoperoxide synthase 2) Prostaglandin-endoperoxide synthase (PTGS), also known as cyclooxygenase, is the key enzyme in prostaglandin biosynthesis, and acts both as a dioxygenase and as a peroxidase. There are two isozymes of PTGS: a constitutive PTGS1 and an inducible PTGS2, which differ in their regulation of expression and tissue distribution. This gene encodes the inducible isozyme. It is regulated by specific stimulatory events, suggesting that it is responsible for the prostanoid biosynthesis involved in inflammation and mitogenesis. [provided by RefSeq, Feb 2009]

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.31121415).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PTGS2	NM_000963.4	c.683G>C	p.Arg228Pro	missense_variant	Exon 6 of 10	ENST00000367468.10	NP_000954.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PTGS2	ENST00000367468.10	c.683G>C	p.Arg228Pro	missense_variant	Exon 6 of 10	1	NM_000963.4	ENSP00000356438.5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.80
BayesDel_addAF	Benign	-0.034	T
BayesDel_noAF	Benign	-0.29
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.48	T
Eigen	Benign	-0.21
Eigen_PC	Benign	-0.043
FATHMM_MKL	Uncertain	0.85	D
LIST_S2	Benign	0.82	T
M_CAP	Uncertain	0.099	D
MetaRNN	Benign	0.31	T
MetaSVM	Benign	-0.72	T
MutationAssessor	Benign	0.90	L
PhyloP100		3.3
PrimateAI	Uncertain	0.49	T
PROVEAN	Benign	-2.0	N
REVEL	Benign	0.19
Sift	Uncertain	0.0080	D
Sift4G	Uncertain	0.034	D
Polyphen		0.087	B
Vest4		0.23
MutPred		0.48		Loss of helix (P = 0.0093);
MVP		0.54
MPC		1.3
ClinPred		0.82	D
GERP RS		5.5
Varity_R		0.89
gMVP		0.81
Mutation Taster		=92/8	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: rs3218622; hg19: chr1-186646005;