chr22-38123185-C-T

Position:

chr22-38123185-C-T

Variant summary

Our verdict is Likely pathogenic. Variant got 9 ACMG points: 9P and 0B. PM1PM2PM5PP3_ModeratePP5

The NM_003560.4(PLA2G6):c.1501G>A(p.Glu501Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000193 in 1,552,570 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E501Q) has been classified as Pathogenic.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

PLA2G6
NM_003560.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1U:1

Conservation

PhyloP100: 7.51

Variant links:

Genes affected

PLA2G6 (HGNC:9039): (phospholipase A2 group VI) The protein encoded by this gene is an A2 phospholipase, a class of enzyme that catalyzes the release of fatty acids from phospholipids. The encoded protein may play a role in phospholipid remodelling, arachidonic acid release, leukotriene and prostaglandin synthesis, fas-mediated apoptosis, and transmembrane ion flux in glucose-stimulated B-cells. Several transcript variants encoding multiple isoforms have been described, but the full-length nature of only three of them have been determined to date. [provided by RefSeq, Dec 2010]

PLA2G6 links:

PLA2G6 (HGNC:):

PLA2G6 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 9 ACMG points.

PM1

In a domain PNPLA (size 184) in uniprot entity PLPL9_HUMAN there are 36 pathogenic changes around while only 3 benign (92%) in NM_003560.4

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr22-38123185-C-G is described in Lovd as [Pathogenic].

PP3

MetaRNN computational evidence supports a deleterious effect, 0.917

PP5

Variant 22-38123185-C-T is Pathogenic according to our data. Variant chr22-38123185-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 379833.We mark this variant Likely_pathogenic, oryginal submissions are: {Uncertain_significance=1, Pathogenic=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PLA2G6	NM_003560.4 linkuse as main transcript	c.1501G>A	p.Glu501Lys	missense_variant	11/17	ENST00000332509.8	NP_003551.2	O60733-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PLA2G6	ENST00000332509.8 linkuse as main transcript	c.1501G>A	p.Glu501Lys	missense_variant	11/17	1	NM_003560.4	ENSP00000333142.3		O60733-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152186

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000143

AC:

AN:

1400384

Hom.:

Cov.:

AF XY:

0.00000145

AC XY:

AN XY:

690876

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000185

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152186

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74338

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:1Uncertain:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Pathogenic:1Uncertain:1

Pathogenic, criteria provided, single submitter	clinical testing	GeneDx	Jun 04, 2015	The E501K variant in the PLA2G6 gene has not been reported previously as a pathogenic variantnor as a benign polymorphism, to our knowledge. The E501K variant was not observed in approximately6400 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project,indicating it is not a common benign variant in these populations. The E501K variant is a non-conservativeamino acid substitution, which occurs at a position that is conserved across species, and in silico analysispredicts this variant is probably damaging to the protein structure/function. In addition, a differentmissense variant at this residue (E501Q) as well as missense variants at nearby residues (L491R,A499V, K502N) have been reported in the Human Gene Mutation Database in association with PLA2G6-related disorders (Stenson et al., 2014), supporting the functional importance of this region of the protein. We interpret E501K as a pathogenic variant. -
Uncertain significance, criteria provided, single submitter	clinical testing	Institute of Human Genetics, Clinical Exome/Genome Diagnostics Group, University Hospital Bonn	Oct 30, 2023	- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.83

BayesDel_addAF

Pathogenic

0.43

BayesDel_noAF

Pathogenic

0.38

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.86

D;.;.

Eigen

Pathogenic

0.93

Eigen_PC

Pathogenic

0.88

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.97

D;D;.

M_CAP

Pathogenic

0.53

MetaRNN

Pathogenic

0.92

D;D;D

MetaSVM

Uncertain

0.60

MutationAssessor

Pathogenic

3.6

H;.;.

PrimateAI

Uncertain

0.77

PROVEAN

Uncertain

-3.4

D;D;D

REVEL

Pathogenic

0.89

Sift

Pathogenic

0.0

D;D;D

Sift4G

Pathogenic

0.0

D;T;T

Polyphen

1.0

D;D;D

Vest4

0.83

MutPred

0.73

Gain of ubiquitination at E501 (P = 0.0408);.;.;

MVP

0.93

MPC

0.71

ClinPred

1.0

GERP RS

5.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.95

gMVP

0.95

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

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

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over