10-98490050-CTT-C

Position:

chr10-98490050-CTT-C

Variant summary

Our verdict is Pathogenic. Variant got 17 ACMG points: 18P and 1B. PVS1PM2PP5_Very_StrongBS1_Supporting

The NM_021828.5(HPSE2):c.1465_1466delAA(p.Asn489fs) variant causes a frameshift, splice region change. The variant allele was found at a frequency of 0.000419 in 1,614,142 control chromosomes in the GnomAD database, with no homozygous occurrence. 1/1 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Likely pathogenic (★★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.00018 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00044 ( 0 hom. )

Consequence

HPSE2
NM_021828.5 frameshift, splice_region

Scores

Not classified

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:7O:1

Conservation

PhyloP100: 5.80

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 17 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 10-98490050-CTT-C is Pathogenic according to our data. Variant chr10-98490050-CTT-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 84.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr10-98490050-CTT-C is described in Lovd as [Pathogenic]. Variant chr10-98490050-CTT-C is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population nfe. gnomad4_exome allele frequency = 0.000445 (650/1461836) while in subpopulation NFE AF= 0.000563 (626/1111968). AF 95% confidence interval is 0.000526. There are 0 homozygotes in gnomad4_exome. There are 307 alleles in male gnomad4_exome subpopulation. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
HPSE2	NM_021828.5 linkuse as main transcript	c.1465_1466delAA	p.Asn489fs	frameshift_variant, splice_region_variant	10/12	ENST00000370552.8	NP_068600.4	Q8WWQ2-1Q2M1H9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
HPSE2	ENST00000370552.8 linkuse as main transcript	c.1465_1466delAA	p.Asn489fs	frameshift_variant, splice_region_variant	10/12	1	NM_021828.5	ENSP00000359583.3		Q8WWQ2-1

Frequencies

GnomAD3 genomes

AF:

0.000177

AC:

AN:

152190

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000965

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:

0.000338

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000155

AC:

AN:

251464

Hom.:

AF XY:

0.000140

AC XY:

AN XY:

135906

show subpopulations

Gnomad AFR exome

AF:

0.000123

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:

0.000308

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000445

AC:

650

AN:

1461836

Hom.:

AF XY:

0.000422

AC XY:

307

AN XY:

727210

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000224

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:

0.000563

Gnomad4 OTH exome

AF:

0.000348

GnomAD4 genome

AF:

0.000177

AC:

AN:

152306

Hom.:

Cov.:

AF XY:

0.000134

AC XY:

AN XY:

74482

show subpopulations

Gnomad4 AFR

AF:

0.0000962

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:

0.000338

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000102

Hom.:

Bravo

AF:

0.000212

EpiCase

AF:

0.000273

EpiControl

AF:

0.000356

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:7Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Urofacial syndrome type 1

Pathogenic:5Other:1

Pathogenic, criteria provided, single submitter	clinical testing	Mayo Clinic Laboratories, Mayo Clinic	May 22, 2017	- -
Pathogenic, no assertion criteria provided	literature only	OMIM	Jun 11, 2010	- -
Likely pathogenic, criteria provided, single submitter	clinical testing	Eurofins-Biomnis	Dec 13, 2022	- -
Pathogenic, criteria provided, single submitter	clinical testing	Fulgent Genetics, Fulgent Genetics	Mar 17, 2022	- -
not provided, no classification provided	literature only	GeneReviews	-	- -
Pathogenic, criteria provided, single submitter	clinical testing	Revvity Omics, Revvity	Dec 11, 2019	- -

not provided

Pathogenic:2

Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	May 21, 2023	Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. For these reasons, this variant has been classified as Pathogenic. ClinVar contains an entry for this variant (Variation ID: 84). This premature translational stop signal has been observed in individuals with urofacial syndrome (PMID: 20560209, 20560210). It has also been observed to segregate with disease in related individuals. This variant is present in population databases (rs397515338, gnomAD 0.03%). This sequence change creates a premature translational stop signal (p.Asn489Profs*126) in the HPSE2 gene. While this is not anticipated to result in nonsense mediated decay, it is expected to disrupt the last 104 amino acid(s) of the HPSE2 protein. -
Likely pathogenic, criteria provided, single submitter	clinical testing	GeneDx	Oct 18, 2023	Frameshift variant predicted to result in the deletion of the last 104 amino acids, replaced with 125 incorrect amino acids; This variant is associated with the following publications: (PMID: 20560209, 11446407, 31589614, 35812751, 20560210) -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.99

Details are displayed if max score is > 0.2

DS_DG_spliceai

0.99

Position offset: 3

DS_DL_spliceai

0.99

Position offset: 1

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