rs797044671

Variant names:

• chrX-149504188-T-TG
• rs797044671
• NM_000202.8:c.208dupC

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1 PM2 PP5_Very_Strong

The NM_000202.8(IDS):​c.208dupC​(p.His70ProfsTer29) variant causes a frameshift change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★★). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 22)
• Consequence: IDS NM_000202.8 frameshift
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:2
• Conservation: PhyloP100: 3.96

Genes affected

IDS (HGNC:5389): (iduronate 2-sulfatase) This gene encodes a member of the sulfatase family of proteins. The encoded preproprotein is proteolytically processed to generate two polypeptide chains. This enzyme is involved in the lysosomal degradation of heparan sulfate and dermatan sulfate. Mutations in this gene are associated with the X-linked lysosomal storage disease mucopolysaccharidosis type II, also known as Hunter syndrome. Alternative splicing results in multiple transcript variants, at least one of which encodes a preproprotein that is proteolytically processed. [provided by RefSeq, Jan 2016]

ENSG00000241489 (HGNC:):

ACMG classification

Verdict is Pathogenic. Variant got 18 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 X-149504188-T-TG is Pathogenic according to our data. Variant chrX-149504188-T-TG is described in ClinVar as [Pathogenic]. Clinvar id is 195037.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
IDS	NM_000202.8	c.208dupC	p.His70ProfsTer29	frameshift_variant	Exon 2 of 9	ENST00000340855.11	NP_000193.1
IDS	NM_006123.5	c.208dupC	p.His70ProfsTer29	frameshift_variant	Exon 2 of 8		NP_006114.1
IDS	NM_001166550.4	c.-19dupC		5_prime_UTR_variant	Exon 2 of 9		NP_001160022.1
IDS	NR_104128.2	n.377dupC		non_coding_transcript_exon_variant	Exon 2 of 9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
IDS	ENST00000340855.11	c.208dupC	p.His70ProfsTer29	frameshift_variant	Exon 2 of 9	1	NM_000202.8	ENSP00000339801.6
ENSG00000241489	ENST00000651111.1	c.-215-3152dupC		intron_variant	Intron 8 of 13			ENSP00000498395.1

Frequencies

GnomAD3 genomes Cov.: 22

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 22

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Pathogenic:1

Jul 08, 2014

Eurofins Ntd Llc (ga)

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Mucopolysaccharidosis, MPS-II Pathogenic:1

Jun 07, 2024

Laboratory of Diagnosis and Therapy of Lysosomal Disorders, University of Padova

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: literature only

Null variant (PVS1_VeryStrong), Absent from controls (or at low frequency) in gnomAD database (PM2_Moderate), Patient’s phenotype or family history highly specific for the disease (PP4_Strong) -

Computational scores

Source: dbNSFP v4.3

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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

Other links and lift over

dbSNP: rs797044671; hg19: chrX-148585718;