rs781958238

Variant names:

• chr7-73769517-G-A
• rs781958238
• NM_001306.4:c.533C>T

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001306.4(CLDN3):​c.533C>T​(p.Ala178Val) variant causes a missense change. The variant allele was found at a frequency of 0.00000275 in 1,454,824 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000027 (0 hom.)
• Consequence: CLDN3 NM_001306.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.10
• Publications: 0 publications found

Genes affected

CLDN3 (HGNC:2045): (claudin 3) 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 intronless gene, a member of the claudin family, is an integral membrane protein and a component of tight junction strands. It is also a low-affinity receptor for Clostridium perfringens enterotoxin, and shares aa sequence similarity with a putative apoptosis-related protein found in rat. [provided by RefSeq, Jul 2008]

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001306.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CLDN3	NM_001306.4	MANE Select	c.533C>T	p.Ala178Val	missense	Exon 1 of 1	NP_001297.1	Q75L79

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CLDN3	ENST00000395145.3	TSL:6 MANE Select	c.533C>T	p.Ala178Val	missense	Exon 1 of 1	ENSP00000378577.2	O15551

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00000851 AC: 2 AN: 235138 AF XY: 0.00000775

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000297

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000960

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000275 AC: 4 AN: 1454824 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 723418

African (AFR) AF: 0.00 AC: 0 AN: 33364

American (AMR) AF: 0.0000453 AC: 2 AN: 44176

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25864

East Asian (EAS) AF: 0.00 AC: 0 AN: 39606

South Asian (SAS) AF: 0.00 AC: 0 AN: 85688

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 50754

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5734

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1109632

Other (OTH) AF: 0.00 AC: 0 AN: 60006

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
PhyloP100		4.1
Varity_R		0.31
gMVP		0.61
Mutation Taster		=73/27	polymorphism

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs781958238; hg19: chr7-73183847;