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NM_000202.8(IDS):c.328A>G (p.Arg110Gly) AND Mucopolysaccharidosis, MPS-II

Germline classification:
Pathogenic/Likely pathogenic (2 submissions)
Last evaluated:
Jun 7, 2024
Review status:
2 stars out of maximum of 4 stars
criteria provided, multiple submitters, no conflicts
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:
RCV001378371.6

Allele description [Variation Report for NM_000202.8(IDS):c.328A>G (p.Arg110Gly)]

NM_000202.8(IDS):c.328A>G (p.Arg110Gly)

Gene:
IDS:iduronate 2-sulfatase [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
Xq28
Genomic location:
Preferred name:
NM_000202.8(IDS):c.328A>G (p.Arg110Gly)
HGVS:
  • NC_000023.11:g.149503402T>C
  • NG_011900.3:g.6933A>G
  • NM_000202.8:c.328A>GMANE SELECT
  • NM_001166550.4:c.58A>G
  • NM_006123.5:c.328A>G
  • NP_000193.1:p.Arg110Gly
  • NP_001160022.1:p.Arg20Gly
  • NP_006114.1:p.Arg110Gly
  • NC_000023.10:g.148584932T>C
  • NM_000202.4:c.328A>G
  • NR_104128.2:n.497A>G
Protein change:
R110G
Links:
dbSNP: rs2124063287
NCBI 1000 Genomes Browser:
rs2124063287
Molecular consequence:
  • NM_000202.8:c.328A>G - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001166550.4:c.58A>G - missense variant - [Sequence Ontology: SO:0001583]
  • NM_006123.5:c.328A>G - missense variant - [Sequence Ontology: SO:0001583]
  • NR_104128.2:n.497A>G - non-coding transcript variant - [Sequence Ontology: SO:0001619]

Condition(s)

Name:
Mucopolysaccharidosis, MPS-II (MPS2)
Synonyms:
Mucopolysaccharidosis type II; Attenuated MPS (subtype; formerly known as mild MPS II); Severe MPS II; See all synonyms [MedGen]
Identifiers:
MONDO: MONDO:0010674; MedGen: C0026705; Orphanet: 580; OMIM: 309900

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Assertion and evidence details

Submission AccessionSubmitterReview Status
(Assertion method)
Clinical Significance
(Last evaluated)
OriginMethodCitations
SCV001575923Labcorp Genetics (formerly Invitae), Labcorp
criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))
Likely pathogenic
(Sep 24, 2021)
germlineclinical testing

PubMed (3)
[See all records that cite these PMIDs]

SCV005088992Laboratory of Diagnosis and Therapy of Lysosomal Disorders, University of Padova
criteria provided, single submitter

(ACMG Guidelines, 2015)
Pathogenic
(Jun 7, 2024)
germlineliterature only

PubMed (2)
[See all records that cite these PMIDs]

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlineyes1not providednot providednot providednot providedliterature only
not providedgermlineunknownnot providednot providednot providednot providednot providedclinical testing

Citations

PubMed

Molecular diagnosis of 65 families with mucopolysaccharidosis type II (Hunter syndrome) characterized by 16 novel mutations in the IDS gene: Genetic, pathological, and structural studies on iduronate-2-sulfatase.

Kosuga M, Mashima R, Hirakiyama A, Fuji N, Kumagai T, Seo JH, Nikaido M, Saito S, Ohno K, Sakuraba H, Okuyama T.

Mol Genet Metab. 2016 Jul;118(3):190-197. doi: 10.1016/j.ymgme.2016.05.003. Epub 2016 May 7.

PubMed [citation]
PMID:
27246110

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 (4)

Details of each submission

From Labcorp Genetics (formerly Invitae), Labcorp, SCV001575923.4

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (3)

Description

This variant is not present in population databases (ExAC no frequency). In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. This variant disrupts the p.Arg110 amino acid residue in IDS. Other variant(s) that disrupt this residue have been observed in individuals with IDS-related conditions (PMID: 27246110), which suggests that this may be a clinically significant amino acid residue. Experimental studies have shown that this missense change affects IDS protein function (PMID: 30639582). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive. This missense change has been observed in individual(s) with mucopolysaccharidosis II (PMID: 30639582; Invitae). This sequence change replaces arginine with glycine at codon 110 of the IDS protein (p.Arg110Gly). The arginine residue is highly conserved and there is a moderate physicochemical difference between arginine and glycine.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

From Laboratory of Diagnosis and Therapy of Lysosomal Disorders, University of Padova, SCV005088992.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not provided1not providednot providedliterature only PubMed (2)

Description

In vitro or in vivo functional studies supportive of a damaging effect (PS3_Strong), Absent from controls (or at low frequency) in gnomAD database (PM2_Moderate), Missense variant in a gene with a low rate of benign missense variation (PP2_Supporting), Multiple lines of computational evidence support a deleterious effect (PP3_Supporting), Patient’s phenotype or family history highly specific for the disease (PP4_Strong)

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineyesnot providednot providednot provided1not providednot providednot provided

Last Updated: Oct 8, 2024