Genetic Variant PLA2G1B:p.Asp121Asn (chr12-120322279-C-T) – ACMG Classification: Likely_pathogenic (6 pts)

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM1PM2PP3_Moderate

The NM_000928.3(PLA2G1B):c.361G>A(p.Asp121Asn) variant causes a missense change. The variant allele was found at a frequency of 0.0000446 in 1,613,738 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000035 ( 0 hom. )

Consequence

PLA2G1B
NM_000928.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 6.79

Variant links:

Genes affected

PLA2G1B (HGNC:9030): (phospholipase A2 group IB) This gene encodes a secreted member of the phospholipase A2 (PLA2) class of enzymes, which is produced by the pancreatic acinar cells. The encoded calcium-dependent enzyme catalyzes the hydrolysis of the sn-2 position of membrane glycerophospholipids to release arachidonic acid (AA) and lysophospholipids. AA is subsequently converted by downstream metabolic enzymes to several bioactive lipophilic compounds (eicosanoids), including prostaglandins (PGs) and leukotrienes (LTs). The enzyme may be involved in several physiological processes including cell contraction, cell proliferation and pathological response. [provided by RefSeq, Aug 2013]

PLA2G1B links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

PM1

In a active_site (size 0) in uniprot entity PA21B_HUMAN

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.936

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PLA2G1B	NM_000928.3 link	c.361G>A	p.Asp121Asn	missense_variant	Exon 4 of 4	ENST00000308366.9	NP_000919.1	P04054

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
PLA2G1B	ENST00000308366.9 link	c.361G>A	p.Asp121Asn	missense_variant	Exon 4 of 4	1	NM_000928.3	ENSP00000312286.4	P04054
PLA2G1B	ENST00000423423 link	c.*20G>A		3_prime_UTR_variant	Exon 3 of 3	1		ENSP00000413594.3	Q9BS22
PLA2G1B	ENST00000549767.1 link	c.274G>A	p.Asp92Asn	missense_variant	Exon 3 of 3	2		ENSP00000447233.1	F8W062

Frequencies

GnomAD3 genomes

AF:

0.000138

AC:

AN:

151956

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000657

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

GnomAD3 exomes

AF:

0.0000597

AC:

AN:

251438

Hom.:

AF XY:

0.0000441

AC XY:

AN XY:

135902

show subpopulations

Gnomad AFR exome

AF:

0.000431

Gnomad AMR exome

AF:

0.000174

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000349

AC:

AN:

1461782

Hom.:

Cov.:

AF XY:

0.0000385

AC XY:

AN XY:

727192

show subpopulations

Gnomad4 AFR exome

AF:

0.000358

Gnomad4 AMR exome

AF:

0.000112

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000279

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.000138

AC:

AN:

151956

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

74198

show subpopulations

Gnomad4 AFR

AF:

0.000483

Gnomad4 AMR

AF:

0.0000657

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000450

Hom.:

Bravo

AF:

0.000174

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000330

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.97

BayesDel_addAF

Benign

-0.20

BayesDel_noAF

Benign

-0.18

CADD

Uncertain

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.53

D;T

Eigen

Pathogenic

0.99

Eigen_PC

Pathogenic

0.90

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.92

D;D

M_CAP

Uncertain

0.13

MetaRNN

Pathogenic

0.94

D;D

MetaSVM

Uncertain

0.38

MutationAssessor

Pathogenic

4.5

H;.

PrimateAI

Uncertain

0.53

PROVEAN

Pathogenic

-4.7

D;D

REVEL

Uncertain

0.57

Sift

Uncertain

0.011

D;D

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

D;.

Vest4

0.97

MVP

0.58

MPC

0.38

ClinPred

0.95

GERP RS

5.7

Varity_R

0.91

gMVP

0.95

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

LitVar

Other links and lift over