NM_005529.7:c.12874G>A

Variant names:

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_005529.7(HSPG2):c.12874G>A(p.Glu4292Lys) variant causes a missense change. The variant allele was found at a frequency of 0.000992 in 1,613,548 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00096 ( 2 hom. )

Consequence

HSPG2
NM_005529.7 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:6

Conservation

PhyloP100: 4.24

Variant links:

Genes affected

HSPG2 (HGNC:5273): (heparan sulfate proteoglycan 2) This gene encodes the perlecan protein, which consists of a core protein to which three long chains of glycosaminoglycans (heparan sulfate or chondroitin sulfate) are attached. The perlecan protein is a large multidomain proteoglycan that binds to and cross-links many extracellular matrix components and cell-surface molecules. It has been shown that this protein interacts with laminin, prolargin, collagen type IV, FGFBP1, FBLN2, FGF7 and transthyretin, etc., and it plays essential roles in multiple biological activities. Perlecan is a key component of the vascular extracellular matrix, where it helps to maintain the endothelial barrier function. It is a potent inhibitor of smooth muscle cell proliferation and is thus thought to help maintain vascular homeostasis. It can also promote growth factor (e.g., FGF2) activity and thus stimulate endothelial growth and re-generation. It is a major component of basement membranes, where it is involved in the stabilization of other molecules as well as being involved with glomerular permeability to macromolecules and cell adhesion. Mutations in this gene cause Schwartz-Jampel syndrome type 1, Silverman-Handmaker type of dyssegmental dysplasia, and tardive dyskinesia. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, May 2014]

HSPG2 links:

LDLRAD2 (HGNC:32071): (low density lipoprotein receptor class A domain containing 2) Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

LDLRAD2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.019059807).

BP6

Variant 1-21824146-C-T is Benign according to our data. Variant chr1-21824146-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 199234.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Benign=3, Uncertain_significance=2}. Variant chr1-21824146-C-T is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00127 (193/152318) while in subpopulation NFE AF= 0.000956 (65/68018). AF 95% confidence interval is 0.000769. There are 0 homozygotes in gnomad4. There are 121 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High Homozygotes in GnomAdExome4 at 2 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HSPG2	NM_005529.7 link	c.12874G>A	p.Glu4292Lys	missense_variant	Exon 95 of 97	ENST00000374695.8	NP_005520.4	P98160
LDLRAD2	NM_001013693.3 link	c.*1931C>T		3_prime_UTR_variant	Exon 5 of 5	ENST00000344642.7	NP_001013715.2	Q5SZI1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HSPG2	ENST00000374695.8 link	c.12874G>A	p.Glu4292Lys	missense_variant	Exon 95 of 97	1	NM_005529.7	ENSP00000363827.3		P98160
LDLRAD2	ENST00000344642.7 link	c.*1931C>T		3_prime_UTR_variant	Exon 5 of 5	2	NM_001013693.3	ENSP00000340988.2		Q5SZI1

Frequencies

GnomAD3 genomes

AF:

0.00127

AC:

193

AN:

152200

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000965

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0110

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000956

Gnomad OTH

AF:

0.00191

GnomAD3 exomes

AF:

0.00139

AC:

348

AN:

249934

Hom.:

AF XY:

0.00137

AC XY:

185

AN XY:

135514

show subpopulations

Gnomad AFR exome

AF:

0.000186

Gnomad AMR exome

AF:

0.000145

Gnomad ASJ exome

AF:

0.000199

Gnomad EAS exome

AF:

0.000109

Gnomad SAS exome

AF:

0.000196

Gnomad FIN exome

AF:

0.00991

Gnomad NFE exome

AF:

0.000967

Gnomad OTH exome

AF:

0.00147

GnomAD4 exome

AF:

0.000964

AC:

1408

AN:

1461230

Hom.:

Cov.:

AF XY:

0.000993

AC XY:

722

AN XY:

726928

show subpopulations

Gnomad4 AFR exome

AF:

0.000239

Gnomad4 AMR exome

AF:

0.000179

Gnomad4 ASJ exome

AF:

0.000268

Gnomad4 EAS exome

AF:

0.0000504

Gnomad4 SAS exome

AF:

0.000197

Gnomad4 FIN exome

AF:

0.00920

Gnomad4 NFE exome

AF:

0.000751

Gnomad4 OTH exome

AF:

0.000696

GnomAD4 genome

AF:

0.00127

AC:

193

AN:

152318

Hom.:

Cov.:

AF XY:

0.00162

AC XY:

121

AN XY:

74494

show subpopulations

Gnomad4 AFR

AF:

0.0000962

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.000288

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0110

Gnomad4 NFE

AF:

0.000956

Gnomad4 OTH

AF:

0.00189

Alfa

AF:

0.000800

Hom.:

Bravo

AF:

0.000491

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.00130

AC:

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000465

AC:

ExAC

AF:

0.00119

AC:

144

EpiCase

AF:

0.000981

EpiControl

AF:

0.000949

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:6

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2Benign:2

Dec 24, 2019

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is associated with the following publications: (PMID: 30753492, 25504735) -

Aug 02, 2019

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The HSPG2 c.12874G>A; p.Glu4292Lys variant (rs141280063) is reported in the literature in an individual with idiopathic scoliosis (Baschal 2014), though, to our knowledge, it has not been described in association with a congenital skeletal dysplasia. This variant is found in the Finnish European population with an overall allele frequency of 0.98% (243/24858 alleles) in the Genome Aggregation Database. The glutamate at codon 4292 is weakly conserved and computational analyses (SIFT: tolerate, PolyPhen-2: damaging) predict conflicting effects of this variant on protein structure/function. However, given the lack of clinical and functional data, the significance of the p.Glu4292Lys variant is uncertain at this time. References: Baschal EE et al. Exome sequencing identifies a rare HSPG2 variant associated with familial idiopathic scoliosis. G3 (Bethesda). 2014 Dec 12;5(2):167-74 -

Jun 23, 2014

Eurofins Ntd Llc (ga)

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jan 26, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not specified

Benign:1

Aug 06, 2024

Athena Diagnostics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Lethal Kniest-like syndrome

Benign:1

Apr 27, 2017

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to rule this variant out of causing disease. Therefore, this variant is classified as benign. -

HSPG2-related disorder

Benign:1

Oct 31, 2019

PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Schwartz-Jampel syndrome

Benign:1

Apr 27, 2017

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.34

BayesDel_addAF

Benign

-0.30

BayesDel_noAF

Benign

-0.23

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.34

Eigen

Uncertain

0.36

Eigen_PC

Uncertain

0.42

FATHMM_MKL

Uncertain

0.83

LIST_S2

Uncertain

0.90

MetaRNN

Benign

0.019

MetaSVM

Uncertain

-0.17

MutationAssessor

Benign

0.83

PrimateAI

Uncertain

0.62

PROVEAN

Benign

-2.1

REVEL

Uncertain

0.38

Sift

Benign

0.12

Sift4G

Benign

0.078

Polyphen

1.0

Vest4

0.32

MVP

0.69

MPC

0.44

ClinPred

0.037

GERP RS

4.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.66

gMVP

0.71

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

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