16-68738309-C-G

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got -1 ACMG points: 0P and 1B. BS2_Supporting

This summary comes from the ClinGen Evidence Repository: The c.61C>G (p.Leu21Val) variant results in a non-synonymous amino acid change in exon 2. This variant is present in 5 of 188,446 alleles (0.00003) in gnomAD, present exclusively in the East Asian subpopulation with 5 of 12,882 alleles (0.00039). This variant has been observed in at least three individuals without DGC, SRC tumour or LBC and whose families do not suggest HDGC (BS2_supporting). In summary, the clinical significance of this variant is uncertain based on ACMG/AMP criteria applied as specified by the CDH1 Variant Curation Expert Panel (Variant Interpretation Guidelines Version 3.1): BS2_supporting. LINK:https://erepo.genome.network/evrepo/ui/classification/CA10580066/MONDO:0007648/007

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000050 ( 0 hom. )

Consequence

CDH1
NM_004360.5 missense

Scores

Clinical Significance

Uncertain significance reviewed by expert panel U:5B:1

Conservation

PhyloP100: 0.584

Variant links:

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]

CDH1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got -1 ACMG points.

BS2

For more information check the summary or visit ClinGen Evidence Repository.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CDH1	NM_004360.5 link	c.61C>G	p.Leu21Val	missense_variant	Exon 2 of 16	ENST00000261769.10	NP_004351.1	P12830-1A0A0U2ZQU7B3GN61
CDH1	NM_001317184.2 link	c.61C>G	p.Leu21Val	missense_variant	Exon 2 of 15		NP_001304113.1	P12830-2B3GN61
CDH1	NM_001317185.2 link	c.-1555C>G		5_prime_UTR_variant	Exon 2 of 16		NP_001304114.1	P12830B3GN61Q9UII7
CDH1	NM_001317186.2 link	c.-1759C>G		5_prime_UTR_variant	Exon 2 of 15		NP_001304115.1	P12830B3GN61

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CDH1	ENST00000261769.10 link	c.61C>G	p.Leu21Val	missense_variant	Exon 2 of 16	1	NM_004360.5	ENSP00000261769.4	P12830-1
CDH1	ENST00000422392.6 link	c.61C>G	p.Leu21Val	missense_variant	Exon 2 of 15	1		ENSP00000414946.2	P12830-2
CDH1	ENST00000566612.5 link	n.61C>G		non_coding_transcript_exon_variant	Exon 2 of 15	1		ENSP00000454782.1	H3BNC6
CDH1	ENST00000566510.5 link	n.61C>G		non_coding_transcript_exon_variant	Exon 2 of 15	5		ENSP00000458139.1	H3BVI7

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152204

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

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

GnomAD3 exomes

AF:

0.0000255

AC:

AN:

157096

Hom.:

AF XY:

0.0000241

AC XY:

AN XY:

82932

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000353

Gnomad SAS 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:

0.00000501

AC:

AN:

1398254

Hom.:

Cov.:

AF XY:

0.00000290

AC XY:

AN XY:

689734

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000559

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000464

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152204

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74350

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:5Benign:1

Revision: reviewed by expert panel

LINK: link

Submissions by phenotype

Hereditary diffuse gastric adenocarcinoma

Uncertain:2

Jan 17, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces leucine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 21 of the CDH1 protein (p.Leu21Val). This variant is present in population databases (no rsID available, gnomAD 0.04%). This missense change has been observed in individual(s) with CDH1-related conditions (PMID: 30287823, 36436516). ClinVar contains an entry for this variant (Variation ID: 230175). 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. -

Aug 01, 2022

European Reference Network on Genetic Tumour Risk Syndromes (ERN-GENTURIS), i3s - Instituto de Investigação e Inovação em Saúde, University of Porto

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

PS4_Supporting; BS2_Supporting (PMID: 30311375) -

Hereditary cancer-predisposing syndrome

Uncertain:1Benign:1

Sep 04, 2024

Color Diagnostics, LLC DBA Color Health

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This missense variant replaces leucine with valine at codon 21 of the CDH1 protein. To our knowledge, functional studies have not been reported for this variant. This variant has been reported in individuals with a family history of breast or gastric cancer (PMID: 36436516). This variant has been observed in at least three individuals without diffuse gastric cancer, signet ring cell tumor or lobular breast cancer and whose families do not suggest hereditary diffuse gastric adenocarcinoma (ClinVar SCV001437603.2). This variant has been identified in 5/188446 chromosomes 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. -

Jan 16, 2025

Ambry Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

CDH1-related diffuse gastric and lobular breast cancer syndrome

Uncertain:1

Aug 21, 2023

ClinGen CDH1 Variant Curation Expert Panel

Significance: Uncertain significance

Review Status: reviewed by expert panel

Collection Method: curation

The c.61C>G (p.Leu21Val) variant results in a non-synonymous amino acid change in exon 2. This variant is present in 5 of 188,446 alleles (0.00003) in gnomAD, present exclusively in the East Asian subpopulation with 5 of 12,882 alleles (0.00039). This variant has been observed in at least three individuals without DGC, SRC tumour or LBC and whose families do not suggest HDGC (BS2_supporting). In summary, the clinical significance of this variant is uncertain based on ACMG/AMP criteria applied as specified by the CDH1 Variant Curation Expert Panel (Variant Interpretation Guidelines Version 3.1): BS2_supporting. -

Familial cancer of breast

Uncertain:1

Nov 07, 2023

Baylor Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.075

BayesDel_addAF

Benign

-0.44

BayesDel_noAF

Benign

-0.55

CADD

Benign

7.8

DANN

Benign

0.67

DEOGEN2

Benign

0.32

T;T;T;.;.

Eigen

Benign

-0.92

Eigen_PC

Benign

-0.90

FATHMM_MKL

Benign

0.13

LIST_S2

Benign

0.56

T;T;T;T;T

M_CAP

Benign

0.012

MetaRNN

Benign

0.15

T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.70

N;.;.;.;N

PrimateAI

Benign

0.34

PROVEAN

Benign

-0.70

N;.;.;.;N

REVEL

Benign

0.024

Sift

Benign

0.52

T;.;.;.;T

Sift4G

Benign

0.64

T;T;T;T;T

Polyphen

0.0

B;.;.;.;.

Vest4

0.47

MutPred

0.37

Gain of loop (P = 0.0097);Gain of loop (P = 0.0097);Gain of loop (P = 0.0097);Gain of loop (P = 0.0097);Gain of loop (P = 0.0097);

MVP

0.53

MPC

0.25

ClinPred

0.015

GERP RS

2.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.6

Varity_R

0.039

gMVP

0.19

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

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