rs62642525

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_005529.7(HSPG2):c.4132G>A(p.Glu1378Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000746 in 1,559,134 control chromosomes in the GnomAD database, including 10 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0037 ( 2 hom., cov: 32)

Exomes 𝑓: 0.00042 ( 8 hom. )

Consequence

HSPG2
NM_005529.7 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:8

Conservation

PhyloP100: 2.69

Publications

1 publications found

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 Gene-Disease associations (from GenCC):

Schwartz-Jampel syndrome type 1
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, ClinGen
Silverman-Handmaker type dyssegmental dysplasia
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, ClinGen, Labcorp Genetics (formerly Invitae), G2P
Schwartz-Jampel syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

HSPG2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.008896202).

BP6

Variant 1-21872275-C-T is Benign according to our data. Variant chr1-21872275-C-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 295849.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00375 (571/152316) while in subpopulation AFR AF = 0.0128 (531/41564). AF 95% confidence interval is 0.0119. There are 2 homozygotes in GnomAd4. There are 259 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 2 AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005529.7. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HSPG2	NM_005529.7	MANE Select	c.4132G>A	p.Glu1378Lys	missense	Exon 33 of 97	NP_005520.4
	HSPG2	NM_001291860.2		c.4135G>A	p.Glu1379Lys	missense	Exon 33 of 97	NP_001278789.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HSPG2	ENST00000374695.8	TSL:1 MANE Select	c.4132G>A	p.Glu1378Lys	missense	Exon 33 of 97	ENSP00000363827.3	P98160
	HSPG2	ENST00000644714.1		c.103G>A	p.Glu35Lys	missense	Exon 1 of 6	ENSP00000496473.1	A0A2R8YH07

Frequencies

GnomAD3 genomes

AF:

0.00374

AC:

569

AN:

152198

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0128

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00190

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00335

GnomAD2 exomes

AF:

0.000923

AC:

154

AN:

166840

AF XY:

0.000680

show subpopulations

Gnomad AFR exome

AF:

0.0139

Gnomad AMR exome

AF:

0.000426

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000164

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000299

Gnomad OTH exome

AF:

0.000216

GnomAD4 exome

AF:

0.000421

AC:

592

AN:

1406818

Hom.:

Cov.:

AF XY:

0.000367

AC XY:

255

AN XY:

694624

show subpopulations

African (AFR)

AF:

0.0150

AC:

479

AN:

31902

American (AMR)

AF:

0.000519

AC:

AN:

36620

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25254

East Asian (EAS)

AF:

0.0000551

AC:

AN:

36308

South Asian (SAS)

AF:

0.000352

AC:

AN:

79636

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49928

Middle Eastern (MID)

AF:

0.000175

AC:

AN:

5712

European-Non Finnish (NFE)

AF:

0.0000148

AC:

AN:

1083140

Other (OTH)

AF:

0.000806

AC:

AN:

58318

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.485

Heterozygous variant carriers

109

145

181

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00375

AC:

571

AN:

152316

Hom.:

Cov.:

AF XY:

0.00348

AC XY:

259

AN XY:

74478

show subpopulations

African (AFR)

AF:

0.0128

AC:

531

AN:

41564

American (AMR)

AF:

0.00190

AC:

AN:

15298

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.000207

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

68032

Other (OTH)

AF:

0.00331

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

Heterozygous variant carriers

118

147

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00157

Hom.:

Bravo

AF:

0.00423

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.0128

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000897

AC:

105

Asia WGS

AF:

0.00144

AC:

AN:

3478

ClinVar

ClinVar submissions

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (4)

HSPG2-related disorder (1)

Lethal Kniest-like syndrome (1)

not specified (1)

Schwartz-Jampel syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.080

BayesDel_addAF

Benign

-0.43

BayesDel_noAF

Benign

-0.37

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.35

Eigen

Benign

-0.11

Eigen_PC

Benign

-0.036

FATHMM_MKL

Uncertain

0.90

LIST_S2

Uncertain

0.93

MetaRNN

Benign

0.0089

MetaSVM

Benign

-0.61

MutationAssessor

Uncertain

2.4

PhyloP100

2.7

PrimateAI

Benign

0.37

PROVEAN

Benign

-1.8

REVEL

Benign

0.20

Sift

Benign

0.062

Sift4G

Uncertain

0.011

Polyphen

0.23

Vest4

0.32

MVP

0.69

MPC

0.23

ClinPred

0.018

GERP RS

3.9

PromoterAI

0.0039

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.8

Varity_R

0.12

gMVP

0.24

Mutation Taster

=85/15

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over