Variant 10-98459739-C-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_021828.5(HPSE2):c.1614G>T(p.Lys538Asn) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000411 in 1,460,594 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

HPSE2
NM_021828.5 missense, splice_region

Scores

Splicing: ADA: 0.9998

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.92

Variant links:

Genes affected

HPSE2 (HGNC:18374): (heparanase 2 (inactive)) This gene encodes a heparanase enzyme. The encoded protein is a endoglycosidase that degrades heparin sulfate proteoglycans located on the extracellular matrix and cell surface. This protein may be involved in biological processes involving remodeling of the extracellular matrix including angiogenesis and tumor progression. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Oct 2009]

HPSE2 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. No scorers claiming Uncertain. Scorers claiming Benign: max_spliceai.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HPSE2	NM_021828.5 linkuse as main transcript	c.1614G>T	p.Lys538Asn	missense_variant, splice_region_variant	12/12	ENST00000370552.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HPSE2	ENST00000370552.8 linkuse as main transcript	c.1614G>T	p.Lys538Asn	missense_variant, splice_region_variant	12/12	1	NM_021828.5	P1	Q8WWQ2-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000405

AC:

AN:

247000

Hom.:

AF XY:

0.00000747

AC XY:

AN XY:

133850

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

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:

0.00000897

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000411

AC:

AN:

1460594

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

726448

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:

0.00000540

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000370

Hom.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

May 19, 2022

This sequence change replaces lysine, which is basic and polar, with asparagine, which is neutral and polar, at codon 538 of the HPSE2 protein (p.Lys538Asn). This variant is present in population databases (no rsID available, gnomAD 0.0009%). This variant has not been reported in the literature in individuals affected with HPSE2-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.61

BayesDel_addAF

Benign

-0.058

BayesDel_noAF

Benign

-0.32

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.33

.;T;.;.

Eigen

Uncertain

0.36

Eigen_PC

Uncertain

0.42

FATHMM_MKL

Uncertain

0.86

LIST_S2

Uncertain

0.91

D;D;D;D

M_CAP

Benign

0.054

MetaRNN

Benign

0.42

T;T;T;T

MetaSVM

Uncertain

0.013

MutationAssessor

Uncertain

2.5

.;M;.;.

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Uncertain

0.62

PROVEAN

Uncertain

-2.5

.;N;N;.

REVEL

Uncertain

0.31

Sift

Uncertain

0.0070

.;D;D;.

Sift4G

Uncertain

0.039

D;D;D;D

Polyphen

0.61, 0.87, 0.28

.;P;P;B

Vest4

0.55, 0.57, 0.57

MutPred

0.48

.;Loss of catalytic residue at K538 (P = 0.005);.;.;

MVP

0.76

MPC

0.29

ClinPred

0.90

GERP RS

5.3

Varity_R

0.33

gMVP

0.64

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

1.0

dbscSNV1_RF

Pathogenic

0.98

SpliceAI score (max)

0.17

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