NM_021101.5:c.474-426C>A

Variant names:

• chr3-190308865-G-T
• rs17501010
• NM_021101.5:c.474-426C>A

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_021101.5(CLDN1):​c.474-426C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.146 in 152,120 control chromosomes in the GnomAD database, including 1,837 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.15 (1837 hom., cov: 32)
• Consequence: CLDN1 NM_021101.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.371
• Publications: 13 publications found

Genes affected

CLDN1 (HGNC:2032): (claudin 1) 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. Loss of function mutations result in neonatal ichthyosis-sclerosing cholangitis syndrome. [provided by RefSeq, Jul 2008]

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]

P3H2-AS1 (HGNC:40886): (P3H2 antisense RNA 1)

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.85).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.208 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_021101.5. 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
	CLDN1	NM_021101.5	MANE Select	c.474-426C>A		intron	N/A	NP_066924.1
	CLDN16	NM_001378492.1		c.-445-6028G>T		intron	N/A	NP_001365421.1
	CLDN16	NM_001378493.1		c.-279+18274G>T		intron	N/A	NP_001365422.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CLDN1	ENST00000295522.4	TSL:1 MANE Select	c.474-426C>A		intron	N/A	ENSP00000295522.3
	P3H2-AS1	ENST00000747181.1		n.627-6028G>T		intron	N/A

Frequencies

GnomAD3 genomes AF: 0.146 AC: 22215 AN: 152002 Hom.: 1830 Cov.: 32

Gnomad AFR AF: 0.212

Gnomad AMI AF: 0.0965

Gnomad AMR AF: 0.178

Gnomad ASJ AF: 0.149

Gnomad EAS AF: 0.0467

Gnomad SAS AF: 0.106

Gnomad FIN AF: 0.120

Gnomad MID AF: 0.165

Gnomad NFE AF: 0.114

Gnomad OTH AF: 0.153

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.146 AC: 22259 AN: 152120 Hom.: 1837 Cov.: 32 AF XY: 0.146 AC XY: 10854 AN XY: 74368

African (AFR) AF: 0.212 AC: 8799 AN: 41486

American (AMR) AF: 0.178 AC: 2714 AN: 15266

Ashkenazi Jewish (ASJ) AF: 0.149 AC: 517 AN: 3466

East Asian (EAS) AF: 0.0468 AC: 242 AN: 5170

South Asian (SAS) AF: 0.107 AC: 514 AN: 4824

European-Finnish (FIN) AF: 0.120 AC: 1272 AN: 10584

Middle Eastern (MID) AF: 0.173 AC: 51 AN: 294

European-Non Finnish (NFE) AF: 0.114 AC: 7743 AN: 68006

Other (OTH) AF: 0.151 AC: 319 AN: 2112

Alfa AF: 0.134 Hom.: 1973

Bravo AF: 0.156

Asia WGS AF: 0.0850 AC: 301 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.85
CADD	Benign	0.67
DANN	Benign	0.37
PhyloP100		-0.37
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs17501010; hg19: chr3-190026654;