21-36461036-A-C

Variant names:

• chr21-36461036-A-C
• rs1477443355
• NM_001146079.2:c.660T>G

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_001146079.2(CLDN14):​c.660T>G​(p.Asn220Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000124 in 1,613,460 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: CLDN14 NM_001146079.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.38
• Publications: 0 publications found

Genes affected

CLDN14 (HGNC:2035): (claudin 14) 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. The encoded protein also binds specifically to the WW domain of Yes-associated protein. Defects in this gene are the cause of an autosomal recessive form of nonsyndromic sensorineural deafness. It is also reported that four synonymous variants in this gene are associated with kidney stones and reduced bone mineral density. Several transcript variants encoding the same protein have been found for this gene. [provided by RefSeq, Jun 2010]

LNCTSI (HGNC:56660): (lncRNA TGF-beta/SMAD3 pathway interacting)

CLDN14-AS1 (HGNC:55953): (CLDN14 antisense RNA 1)

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.31176066).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001146079.2. 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
	CLDN14	NM_001146079.2	MANE Select	c.660T>G	p.Asn220Lys	missense	Exon 2 of 2	NP_001139551.1	O95500
	CLDN14	NM_001146077.2		c.660T>G	p.Asn220Lys	missense	Exon 3 of 3	NP_001139549.1	O95500
	CLDN14	NM_001146078.3		c.660T>G	p.Asn220Lys	missense	Exon 3 of 3	NP_001139550.1	O95500

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CLDN14	ENST00000399135.6	TSL:1 MANE Select	c.660T>G	p.Asn220Lys	missense	Exon 2 of 2	ENSP00000382087.1	O95500
	CLDN14	ENST00000342108.2	TSL:1	c.660T>G	p.Asn220Lys	missense	Exon 3 of 3	ENSP00000339292.2	O95500
	CLDN14	ENST00000399136.5	TSL:1	c.660T>G	p.Asn220Lys	missense	Exon 3 of 3	ENSP00000382088.1	O95500

Frequencies

GnomAD3 genomes AF: 0.00000658 AC: 1 AN: 151946 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000655

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00000399 AC: 1 AN: 250768 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000289

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461514 Hom.: 0 Cov.: 34 AF XY: 0.00 AC XY: 0 AN XY: 727050

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.0000224 AC: 1 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86248

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53418

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5506

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111956

Other (OTH) AF: 0.00 AC: 0 AN: 60348

GnomAD4 genome AF: 0.00000658 AC: 1 AN: 151946 Hom.: 0 Cov.: 33 AF XY: 0.0000135 AC XY: 1 AN XY: 74214

African (AFR) AF: 0.00 AC: 0 AN: 41350

American (AMR) AF: 0.0000655 AC: 1 AN: 15256

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5160

South Asian (SAS) AF: 0.00 AC: 0 AN: 4820

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10586

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 67984

Other (OTH) AF: 0.00 AC: 0 AN: 2090

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.32
BayesDel_addAF	Benign	-0.11	T
BayesDel_noAF	Benign	-0.31
CADD	Benign	22
DANN	Uncertain	0.99
DEOGEN2	Benign	0.065	T
Eigen	Benign	-0.40
Eigen_PC	Benign	-0.29
FATHMM_MKL	Uncertain	0.88	D
LIST_S2	Benign	0.73	T
M_CAP	Uncertain	0.11	D
MetaRNN	Benign	0.31	T
MetaSVM	Benign	-0.54	T
MutationAssessor	Benign	0.0	N
PhyloP100		1.4
PrimateAI	Uncertain	0.61	T
PROVEAN	Benign	-0.95	N
REVEL	Uncertain	0.32
Sift	Benign	0.16	T
Sift4G	Benign	0.30	T
Polyphen		0.80	P
Vest4		0.48
MutPred		0.38		Gain of ubiquitination at N220 (P = 0.0121)
MVP		0.75
MPC		0.73
ClinPred		0.64	D
GERP RS		2.4
Varity_R		0.087
gMVP		0.71
Mutation Taster		=66/34	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

Other links and lift over

dbSNP: rs1477443355; hg19: chr21-37833334;