Genetic Variant PTGS1:p.Val481Leu (chr9-122390342-G-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_000962.4(PTGS1):c.1441G>T(p.Val481Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,644 control chromosomes in the GnomAD database, with no homozygous occurrence. 13/22 in silico tools predict 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. V481I) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

PTGS1
NM_000962.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.51

Publications

26 publications found

Variant links:

Genes affected

PTGS1 (HGNC:9604): (prostaglandin-endoperoxide synthase 1) This is one of two genes encoding similar enzymes that catalyze the conversion of arachidonate to prostaglandin. The encoded protein regulates angiogenesis in endothelial cells, and is inhibited by nonsteroidal anti-inflammatory drugs such as aspirin. Based on its ability to function as both a cyclooxygenase and as a peroxidase, the encoded protein has been identified as a moonlighting protein. The protein may promote cell proliferation during tumor progression. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2021]

PTGS1 Gene-Disease associations (from GenCC):

platelet-type bleeding disorder 12
Inheritance: SD Classification: LIMITED Submitted by: ClinGen

PTGS1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PTGS1	NM_000962.4 link	c.1441G>T	p.Val481Leu	missense_variant	Exon 10 of 11	ENST00000362012.7	NP_000953.2	P23219-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PTGS1	ENST00000362012.7 link	c.1441G>T	p.Val481Leu	missense_variant	Exon 10 of 11	1	NM_000962.4	ENSP00000354612.2		P23219-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461644

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727122

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44704

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.00

AC:

AN:

39692

South Asian (SAS)

AF:

0.00

AC:

AN:

86190

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53408

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111886

Other (OTH)

AF:

0.00

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.14

BayesDel_addAF

Benign

-0.087

BayesDel_noAF

Benign

-0.36

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.14

.;.;T;T;T;.;.

Eigen

Benign

-0.39

Eigen_PC

Benign

-0.20

FATHMM_MKL

Uncertain

0.92

LIST_S2

Uncertain

0.88

D;D;.;D;D;D;D

M_CAP

Benign

0.019

MetaRNN

Uncertain

0.51

D;D;D;D;D;D;D

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.0

.;.;N;N;.;.;.

PhyloP100

7.5

PrimateAI

Benign

0.47

PROVEAN

Benign

-1.0

.;N;.;N;.;N;N

REVEL

Benign

0.26

Sift

Uncertain

0.018

.;D;.;D;.;D;D

Sift4G

Uncertain

0.039

.;D;.;D;.;D;D

Polyphen

0.0090, 0.0070

.;.;B;B;.;B;.

Vest4

0.20, 0.17, 0.20, 0.17

MutPred

0.76

.;.;Gain of relative solvent accessibility (P = 0.1012);Gain of relative solvent accessibility (P = 0.1012);.;.;.;

MVP

0.42

MPC

0.31

ClinPred

0.93

GERP RS

4.3

Varity_R

0.47

gMVP

0.67

Mutation Taster

=79/21

polymorphism

(source)

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over