rs1555515280

Variant names:

• chr16-68808813-G-A
• rs1555515280
• NM_004360.5:c.652G>A

Your query was ambiguous. Multiple possible variants found:

• chr16-68808813-G-A
• chr16-68808813-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 4P and 4B. PM1 PM2 BP4_Strong

The NM_004360.5(CDH1):​c.652G>A​(p.Glu218Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,840 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: CDH1 NM_004360.5 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:3
• Conservation: PhyloP100: -0.503

Genes affected

CDH1 (HGNC:1748): (cadherin 1) This gene encodes a classical cadherin of the cadherin superfamily. Alternative splicing results in multiple transcript variants, at least one of which encodes a preproprotein that is proteolytically processed to generate the mature glycoprotein. This calcium-dependent cell-cell adhesion protein is comprised of five extracellular cadherin repeats, a transmembrane region and a highly conserved cytoplasmic tail. Mutations in this gene are correlated with gastric, breast, colorectal, thyroid and ovarian cancer. Loss of function of this gene is thought to contribute to cancer progression by increasing proliferation, invasion, and/or metastasis. The ectodomain of this protein mediates bacterial adhesion to mammalian cells and the cytoplasmic domain is required for internalization. This gene is present in a gene cluster with other members of the cadherin family on chromosome 16. [provided by RefSeq, Nov 2015]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM1: In a domain Cadherin 1 (size 107) in uniprot entity CADH1_HUMAN there are 11 pathogenic changes around while only 4 benign (73%) in NM_004360.5
• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.038476497).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CDH1	NM_004360.5	c.652G>A	p.Glu218Lys	missense_variant	Exon 5 of 16	ENST00000261769.10	NP_004351.1
CDH1	NM_001317184.2	c.652G>A	p.Glu218Lys	missense_variant	Exon 5 of 15		NP_001304113.1
CDH1	NM_001317185.2	c.-964G>A		5_prime_UTR_variant	Exon 5 of 16		NP_001304114.1
CDH1	NM_001317186.2	c.-1168G>A		5_prime_UTR_variant	Exon 5 of 15		NP_001304115.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CDH1	ENST00000261769.10	c.652G>A	p.Glu218Lys	missense_variant	Exon 5 of 16	1	NM_004360.5	ENSP00000261769.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461840 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 727228

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: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000936 Hom.: 0

Bravo AF: 0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Hereditary cancer-predisposing syndrome Uncertain:2

Aug 22, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.E218K variant (also known as c.652G>A), located in coding exon 5 of the CDH1 gene, results from a G to A substitution at nucleotide position 652. The glutamic acid at codon 218 is replaced by lysine, an amino acid with similar properties. This alteration was observed with an allele frequency of 0.00014 in 7,051 unselected female breast cancer patients and was observed with an allele frequency of 0 in 11,241 female controls of Japanese ancestry (Momozawa Y et al. Nat Commun, 2018 10;9:4083). This amino acid position is poorly conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Apr 24, 2023

Color Diagnostics, LLC DBA Color Health

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This missense variant replaces glutamic acid with lysine at codon 218 of the CDH1 protein. To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with CDH1-related disorders in the literature. This variant has not been identified in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -

Hereditary diffuse gastric adenocarcinoma Uncertain:1

Jun 23, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 218 of the CDH1 protein (p.Glu218Lys). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with breast cancer (PMID: 30287823). ClinVar contains an entry for this variant (Variation ID: 463787). 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 tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.093
BayesDel_addAF	Benign	-0.24	T
BayesDel_noAF	Benign	-0.58
CADD	Benign	3.8
DANN	Benign	0.62
DEOGEN2	Benign	0.16	T;T;T;.;.
Eigen	Benign	-1.5
Eigen_PC	Benign	-1.5
FATHMM_MKL	Benign	0.12	N
LIST_S2	Uncertain	0.87	D;T;D;T;T
M_CAP	Benign	0.030	D
MetaRNN	Benign	0.038	T;T;T;T;T
MetaSVM	Benign	-0.85	T
MutationAssessor	Benign	-0.82	N;.;.;.;N
PrimateAI	Benign	0.26	T
PROVEAN	Benign	-0.030	N;.;.;.;N
REVEL	Benign	0.083
Sift	Benign	1.0	T;.;.;.;T
Sift4G	Benign	1.0	T;T;T;T;T
Polyphen		0.0010	B;.;.;.;.
Vest4		0.14
MutPred		0.54		Gain of ubiquitination at E218 (P = 0.0311);Gain of ubiquitination at E218 (P = 0.0311);Gain of ubiquitination at E218 (P = 0.0311);Gain of ubiquitination at E218 (P = 0.0311);Gain of ubiquitination at E218 (P = 0.0311);
MVP		0.48
MPC		0.29
ClinPred		0.048	T
GERP RS		-3.5
Varity_R		0.18
gMVP		0.31

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: rs1555515280; hg19: chr16-68842716;