16-68812262-C-T

Position:

chr16-68812262-C-T

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

This summary comes from the ClinGen Evidence Repository: The c.1136C>T (p.Thr379Met) variant results in a conservative missense change in the Cadherin 3 domain of CDH1. This variant was observed in 2 of 152,226 alleles in the gnomAD population database. However, this variants has also been observed in more than 10 individuals without GC, DGC, gastric SRC tumours or LBC and whose families do not suggest HDGC (BS2). In summary, this variant meets criteria to be classified as Likely Benign based on the ACMG/AMP criteria applied as specified by the CDH1 Variant Curation Expert Panel: BS2. (CDH1 VCEP specifications version 3.1; 05/22/2023) LINK:https://erepo.genome.network/evrepo/ui/classification/CA169895/MONDO:0100488/007

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000023 ( 0 hom. )

Consequence

CDH1
NM_004360.5 missense, splice_region

Scores

Splicing: ADA: 0.0005409

Clinical Significance

Likely benign reviewed by expert panel U:6B:4

Conservation

PhyloP100: -1.01

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 Likely_benign. Variant got -4 ACMG points.

BS2

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
CDH1	NM_004360.5 linkuse as main transcript	c.1136C>T	p.Thr379Met	missense_variant, splice_region_variant	8/16	ENST00000261769.10
CDH1	NM_001317184.2 linkuse as main transcript	c.1136C>T	p.Thr379Met	missense_variant, splice_region_variant	8/15
CDH1	NM_001317185.2 linkuse as main transcript	c.-480C>T		splice_region_variant, 5_prime_UTR_variant	8/16
CDH1	NM_001317186.2 linkuse as main transcript	c.-684C>T		splice_region_variant, 5_prime_UTR_variant	8/15

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CDH1	ENST00000261769.10 linkuse as main transcript	c.1136C>T	p.Thr379Met	missense_variant, splice_region_variant	8/16	1	NM_004360.5	P1	P12830-1

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152226

Hom.:

Cov.:

show subpopulations

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000159

AC:

AN:

251460

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135904

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000578

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000226

AC:

AN:

1461718

Hom.:

Cov.:

AF XY:

0.0000234

AC XY:

AN XY:

727168

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000447

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.0000243

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152226

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74372

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000655

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000113

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Likely benign

Submissions summary: Uncertain:6Benign:4

Revision: reviewed by expert panel

LINK: link

Submissions by phenotype

Hereditary diffuse gastric adenocarcinoma

Uncertain:4Benign:1

Benign, criteria provided, single submitter	clinical testing	Invitae	Jan 12, 2024	- -
Uncertain significance, criteria provided, single submitter	clinical testing	European Reference Network on Genetic Tumour Risk Syndromes (ERN-GENTURIS), i3s - Instituto de Investigação e Inovação em Saúde, University of Porto	Aug 01, 2022	PM2 (PMID: 30311375) -
Uncertain significance, criteria provided, single submitter	clinical testing	Myriad Genetics, Inc.	Mar 06, 2023	This variant is classified as a variant of uncertain significance as there is insufficient evidence to determine its impact on protein function and/or cancer risk. -
Uncertain significance, criteria provided, single submitter	clinical testing	Mendelics	Jul 02, 2018	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Counsyl	Jun 14, 2016	- -

not provided

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Sep 14, 2023	The CDH1 c.1136C>T; p.Thr379Met variant (rs587782856) is reported in the literature in individuals affected with cancer (Garcia-Pelaez 2023, Guindalini 2022). This variant is reported in ClinVar (Variation ID: 142968), and is found in the general population with an overall allele frequency of 0.002% (4/251,460 alleles) in the Genome Aggregation Database. Computational analyses predict that this variant is neutral (REVEL: 0.03). Due to limited information, the clinical significance of this variant is uncertain at this time. References: Garcia-Pelaez J et al. Genotype-first approach to identify associations between CDH1 germline variants and cancer phenotypes: a multicentre study by the European Reference Network on Genetic Tumour Risk Syndromes. Lancet Oncol. 2023 Jan;24(1):91-106. PMID: 36436516. Guindalini RSC et al. Detection of germline variants in Brazilian breast cancer patients using multigene panel testing. Sci Rep. 2022 Mar 9;12(1):4190. PMID: 35264596. -
Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Dec 02, 2022	Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 30836094, 30766968, 31871109, 15235021, 22850631) -

Hereditary cancer-predisposing syndrome

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Feb 16, 2021	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. -
Likely benign, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Jan 05, 2024	- -

CDH1-related diffuse gastric and lobular breast cancer syndrome

Benign:1

Likely benign, reviewed by expert panel

curation

ClinGen CDH1 Variant Curation Expert Panel

Aug 03, 2023

The c.1136C>T (p.Thr379Met) variant results in a conservative missense change in the Cadherin 3 domain of CDH1. This variant was observed in 2 of 152,226 alleles in the gnomAD population database. However, this variants has also been observed in more than 10 individuals without GC, DGC, gastric SRC tumours or LBC and whose families do not suggest HDGC (BS2). In summary, this variant meets criteria to be classified as Likely Benign based on the ACMG/AMP criteria applied as specified by the CDH1 Variant Curation Expert Panel: BS2. (CDH1 VCEP specifications version 3.1; 05/22/2023) -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.070

BayesDel_addAF

Benign

-0.34

BayesDel_noAF

Benign

-0.55

CADD

Benign

6.6

DANN

Benign

0.84

DEOGEN2

Uncertain

0.73

D;T;T;.;.

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.12

LIST_S2

Benign

0.52

T;T;T;T;T

M_CAP

Benign

0.020

MetaRNN

Benign

0.14

T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.1

L;.;.;.;L

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.23

PROVEAN

Benign

-2.4

N;.;.;.;D

REVEL

Benign

0.030

Sift

Benign

0.093

T;.;.;.;D

Sift4G

Benign

0.16

T;T;T;T;T

Polyphen

0.031

B;.;.;.;.

Vest4

0.14

MutPred

0.27

Loss of glycosylation at T379 (P = 0.0586);Loss of glycosylation at T379 (P = 0.0586);Loss of glycosylation at T379 (P = 0.0586);Loss of glycosylation at T379 (P = 0.0586);Loss of glycosylation at T379 (P = 0.0586);

MVP

0.61

MPC

0.27

ClinPred

0.045

GERP RS

-4.7

Varity_R

0.047

gMVP

0.50

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00054

dbscSNV1_RF

Benign

0.0040

SpliceAI score (max)

0.010

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