NM_005529.7(HSPG2):c.13033G>A (p.Gly4345Arg) AND not provided

Germline classification:: Conflicting interpretations of pathogenicity (4 submissions)
Last evaluated:: Dec 31, 2023
Review status:: criteria provided, conflicting classifications

Somatic classification of clinical impact:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Somatic classification of oncogenicity:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Record status:: current
Accession:: RCV000518544.16

Allele description [Variation Report for NM_005529.7(HSPG2):c.13033G>A (p.Gly4345Arg)]

NM_005529.7(HSPG2):c.13033G>A (p.Gly4345Arg)

Genes:

HSPG2:heparan sulfate proteoglycan 2 [Gene - OMIM - HGNC]
LDLRAD2:low density lipoprotein receptor class A domain containing 2 [Gene - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

1p36.12

Genomic location:

Preferred name:

NM_005529.7(HSPG2):c.13033G>A (p.Gly4345Arg)

HGVS:

NC_000001.11:g.21823459C>T
NG_016740.1:g.118799G>A
NM_001013693.3:c.*1244C>TMANE SELECT
NM_001291860.2:c.13036G>A
NM_005529.7:c.13033G>AMANE SELECT
NP_001278789.1:p.Gly4346Arg
NP_005520.4:p.Gly4345Arg
NC_000001.10:g.22149952C>T
NM_005529.5:c.13033G>A
NM_005529.6:c.13033G>A

Protein change:

G4345R

Links:

dbSNP: rs148788926

NCBI 1000 Genomes Browser:

rs148788926

Molecular consequence:

NM_001013693.3:c.*1244C>T - 3 prime UTR variant - [Sequence Ontology: SO:0001624]
NM_001291860.2:c.13036G>A - missense variant - [Sequence Ontology: SO:0001583]
NM_005529.7:c.13033G>A - missense variant - [Sequence Ontology: SO:0001583]

Observations:

Condition(s)

Synonyms:: none provided
Identifiers:: MedGen: C3661900

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV000613704	Athena Diagnostics	criteria provided, single submitter (Athena Diagnostics Criteria)	Likely benign (Jul 2, 2018)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV000855979	Eurofins Ntd Llc (ga)	criteria provided, single submitter (EGL Classification Definitions 2015)	Uncertain significance (Jul 26, 2017)	germline	clinical testing	Citation Link,
SCV001495257	Invitae	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Dec 31, 2023)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV003811378	Revvity Omics, Revvity	criteria provided, single submitter (ACMG Guidelines, 2015)	Uncertain significance (Nov 18, 2019)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]

Help

Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	unknown	1	not provided	not provided	not provided	not provided	clinical testing

Citations

PubMed

A Standardized DNA Variant Scoring System for Pathogenicity Assessments in Mendelian Disorders.

Karbassi I, Maston GA, Love A, DiVincenzo C, Braastad CD, Elzinga CD, Bright AR, Previte D, Zhang K, Rowland CM, McCarthy M, Lapierre JL, Dubois F, Medeiros KA, Batish SD, Jones J, Liaquat K, Hoffman CA, Jaremko M, Wang Z, Sun W, Buller-Burckle A, et al.

Hum Mutat. 2016 Jan;37(1):127-34. doi: 10.1002/humu.22918. Epub 2015 Oct 29.

PubMed [citation]

PMID:: 26467025
PMCID:: PMC4737317

Sherloc: a comprehensive refinement of the ACMG-AMP variant classification criteria.

Nykamp K, Anderson M, Powers M, Garcia J, Herrera B, Ho YY, Kobayashi Y, Patil N, Thusberg J, Westbrook M; Invitae Clinical Genomics Group., Topper S.

Genet Med. 2017 Oct;19(10):1105-1117. doi: 10.1038/gim.2017.37. Epub 2017 May 11. Erratum in: Genet Med. 2020 Jan;22(1):240. doi: 10.1038/s41436-019-0624-9.

PubMed [citation]

PMID:: 28492532
PMCID:: PMC5632818

See all PubMed Citations (3)

Details of each submission

From Athena Diagnostics, SCV000613704.2

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Eurofins Ntd Llc (ga), SCV000855979.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	1	not provided	not provided	clinical testing	not provided

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		1	not provided	not provided	not provided

From Invitae, SCV001495257.4

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

Description

This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 4345 of the HSPG2 protein (p.Gly4345Arg). This variant is present in population databases (rs148788926, gnomAD 0.2%), and has an allele count higher than expected for a pathogenic variant. This variant has not been reported in the literature in individuals affected with HSPG2-related conditions. ClinVar contains an entry for this variant (Variation ID: 447542). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Not Available"; PolyPhen-2: "Benign"; Align-GVGD: "Not Available". The arginine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. 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.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Revvity Omics, Revvity, SCV003811378.2

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

Last Updated: May 7, 2024

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