X-50070025-C-T

Position:

• chrX-50070025-C-T

Variant summary

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

The NM_001127898.4(CLCN5):​c.310C>T​(p.Arg104Ter) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 22)
• Consequence: CLCN5 NM_001127898.4 stop_gained
• Clinical Significance: Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:2 O:1
• Conservation: PhyloP100: 1.50

Genes affected

CLCN5 (HGNC:2023): (chloride voltage-gated channel 5) This gene encodes a member of the ClC family of chloride ion channels and ion transporters. The encoded protein is primarily localized to endosomal membranes and may function to facilitate albumin uptake by the renal proximal tubule. Mutations in this gene have been found in Dent disease and renal tubular disorders complicated by nephrolithiasis. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Jan 2013]

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-50070025-C-T is Pathogenic according to our data. Variant chrX-50070025-C-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 207994.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CLCN5	NM_001127898.4	c.310C>T	p.Arg104Ter	stop_gained	5/15	ENST00000376091.8	NP_001121370.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CLCN5	ENST00000376091.8	c.310C>T	p.Arg104Ter	stop_gained	5/15	2	NM_001127898.4	ENSP00000365259	P3

Frequencies

GnomAD3 genomes Cov.: 22

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 22

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:2 Other:1

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Familial X-linked hypophosphatemic vitamin D refractory rickets Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Neuberg Centre For Genomic Medicine, NCGM

-

The stop gained c.310C>Tp.Arg104Ter variant in CLCN5 gene has reported in hemizygous state in an individual affected with CLCN5 related disorders Wen M, et. al., 2018. The c.310C>T variant is novel not in any individuals in gnomAD Exomes and 1000Genomes. This variant has been reported to the ClinVar database. The nucleotide change c.310C>T in CLCN5 is predicted asconserved by GERP++ and PhyloP across 100 vertebrates. Loss of function variants have been previously reported to be diseasecausing. For these reasons, this variant has been classified as Likely Pathogenic. -

CLCN5-related disorder Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Dec 07, 2022

The CLCN5 c.100C>T variant is predicted to result in premature protein termination (p.Arg34*). This variant has been reported to have occurred de novo or be inherited from a mother with nephrolithiasis in two hemizygous patients with Dent disease (Hoopes et al. 1998. PubMed ID: 9734595; Wen et al. 2018. PubMed ID: 30581818). This variant has not been reported in a large population database (http://gnomad.broadinstitute.org), indicating this variant is rare. Nonsense variants in CLCN5 are expected to be pathogenic. This variant is interpreted as pathogenic. -

Dent disease type 1 Other:1

not provided, no classification provided

literature only

GeneReviews

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.74	D
BayesDel_noAF	Pathogenic	0.60
CADD	Pathogenic	36
DANN	Uncertain	1.0
FATHMM_MKL	Uncertain	0.87	D
MutationTaster	Benign	1.0	A;A;A;A
Vest4		0.83
GERP RS		3.6

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

LitVar

Other links and lift over

dbSNP: rs797044808; hg19: chrX-49834680;