rs104893723

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Pathogenic. Variant got 15 ACMG points: 15P and 0B. PM1PM2PM5PP3PP5_Very_Strong

The NM_006580.4(CLDN16):c.383G>A(p.Gly128Asp) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.00000205 in 1,461,586 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Likely pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G128A) has been classified as Likely pathogenic.

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

CLDN16
NM_006580.4 missense, splice_region

Scores

Splicing: ADA: 0.9979

Clinical Significance

Likely pathogenic criteria provided, multiple submitters, no conflicts P:3

Conservation

PhyloP100: 5.38

Variant links:

Genes affected

CLDN16 (HGNC:2037): (claudin 16) Tight junctions represent one mode of cell-to-cell adhesion in epithelial or endothelial cell sheets, forming continuous seals around cells and serving as a physical barrier to prevent solutes and water from passing freely through the paracellular space. These junctions are comprised of sets of continuous networking strands in the outwardly facing cytoplasmic leaflet, with complementary grooves in the inwardly facing extracytoplasmic leaflet. The protein encoded by this gene, a member of the claudin family, is an integral membrane protein and a component of tight junction strands. It is found primarily in the kidneys, specifically in the thick ascending limb of Henle, where it acts as either an intercellular pore or ion concentration sensor to regulate the paracellular resorption of magnesium ions. Defects in this gene are a cause of primary hypomagnesemia, which is characterized by massive renal magnesium wasting with hypomagnesemia and hypercalciuria, resulting in nephrocalcinosis and renal failure. This gene and the CLDN1 gene are clustered on chromosome 3q28. [provided by RefSeq, Jun 2010]

CLDN16 links:

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ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 15 ACMG points.

PM1

In a chain Claudin-16 (size 234) in uniprot entity CLD16_HUMAN there are 9 pathogenic changes around while only 1 benign (90%) in NM_006580.4

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chrnull-null-null-null is described in UniProt as null.

PP3

Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. No scorers claiming Uncertain. Scorers claiming Benign: max_spliceai.

PP5

Variant 3-190408314-G-A is Pathogenic according to our data. Variant chr3-190408314-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 5928.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
CLDN16	NM_006580.4 link	c.383G>A	p.Gly128Asp	missense_variant, splice_region_variant	Exon 4 of 5	ENST00000264734.3	NP_006571.2	Q9Y5I7
CLDN16	NM_001378492.1 link	c.383G>A	p.Gly128Asp	missense_variant, splice_region_variant	Exon 8 of 9		NP_001365421.1
CLDN16	NM_001378493.1 link	c.383G>A	p.Gly128Asp	missense_variant, splice_region_variant	Exon 7 of 8		NP_001365422.1
CLDN16	XM_047447333.1 link	c.383G>A	p.Gly128Asp	missense_variant, splice_region_variant	Exon 6 of 7		XP_047303289.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CLDN16	ENST00000264734.3 link	c.383G>A	p.Gly128Asp	missense_variant, splice_region_variant	Exon 4 of 5	1	NM_006580.4	ENSP00000264734.3		Q9Y5I7
CLDN16	ENST00000456423.2 link	c.115-1589G>A		intron_variant	Intron 1 of 1	1		ENSP00000414136.2		F6SGM4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251308

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135848

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000880

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000205

AC:

AN:

1461586

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727128

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000270

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000306

Hom.:

Bravo

AF:

0.00000378

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Primary hypomagnesemia

Pathogenic:2

Jul 02, 1999

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Nov 21, 2021

Fulgent Genetics, Fulgent Genetics

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided

Pathogenic:1

Aug 08, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces glycine, which is neutral and non-polar, with aspartic acid, which is acidic and polar, at codon 198 of the CLDN16 protein (p.Gly198Asp). This variant is present in population databases (rs104893723, gnomAD 0.0009%). This missense change has been observed in individuals with CLDN16-related conditions (PMID: 10390358, 10878661). ClinVar contains an entry for this variant (Variation ID: 5928). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. Experimental studies have shown that this missense change affects CLDN16 function (PMID: 16234325, 31273276). Studies have shown that this missense change alters mRNA splicing and is expected to lead to the loss of protein expression (PMID: 30621608). This variant disrupts the p.Gly198 amino acid residue in CLDN16. Other variant(s) that disrupt this residue have been observed in individuals with CLDN16-related conditions (PMID: 31119091), which suggests that this may be a clinically significant amino acid residue. 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.99

BayesDel_addAF

Pathogenic

0.43

BayesDel_noAF

Pathogenic

0.38

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.96

Eigen

Pathogenic

0.72

Eigen_PC

Uncertain

0.65

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.84

M_CAP

Pathogenic

0.33

MetaRNN

Pathogenic

0.99

MetaSVM

Pathogenic

0.84

MutationAssessor

Uncertain

2.7

PrimateAI

Uncertain

0.75

PROVEAN

Pathogenic

-6.0

REVEL

Pathogenic

0.87

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.012

Polyphen

1.0

Vest4

0.94

MutPred

0.96

Loss of glycosylation at T199 (P = 0.1772);

MVP

0.99

MPC

0.60

ClinPred

0.99

GERP RS

5.6

Varity_R

0.95

gMVP

0.91

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

1.0

dbscSNV1_RF

Pathogenic

0.76

SpliceAI score (max)

0.090

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over