16-68738373-C-T

Position:

chr16-68738373-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.125C>T (NM_004360.5) variant in CDH1 is a missense variant predicted to cause substitution of Pro by Leu at amino acid 42 (p.Pro42Leu). This variant has been observed in more than 10 heterozygous individuals with no DGC, SRC tumours and whose families do not suggest HDGC (BS2; GeneDx, Invitae, Color). In summary, the CDH1 VCEP classified the variant as likely benign for DGLBCS based on BS2 alone based on the ACMG/AMP criteria applied, as specified by the ClinGen CDH1 VCEP: BS2. (CDH1 VCEP specifications version 3.1; 04/24/2023) LINK:https://erepo.genome.network/evrepo/ui/classification/CA10580073/MONDO:0100488/007

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

CDH1
ENST00000261769.10 missense

Scores

Clinical Significance

Likely benign reviewed by expert panel U:5B:2

Conservation

PhyloP100: 1.46

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

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

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
CDH1	NM_004360.5 linkuse as main transcript	c.125C>T	p.Pro42Leu	missense_variant	2/16	ENST00000261769.10	NP_004351.1
CDH1	NM_001317184.2 linkuse as main transcript	c.125C>T	p.Pro42Leu	missense_variant	2/15		NP_001304113.1
CDH1	NM_001317185.2 linkuse as main transcript	c.-1491C>T		5_prime_UTR_variant	2/16		NP_001304114.1
CDH1	NM_001317186.2 linkuse as main transcript	c.-1695C>T		5_prime_UTR_variant	2/15		NP_001304115.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CDH1	ENST00000261769.10 linkuse as main transcript	c.125C>T	p.Pro42Leu	missense_variant	2/16	1	NM_004360.5	ENSP00000261769	P1	P12830-1
CDH1	ENST00000422392.6 linkuse as main transcript	c.125C>T	p.Pro42Leu	missense_variant	2/15	1		ENSP00000414946		P12830-2
CDH1	ENST00000566612.5 linkuse as main transcript	c.125C>T	p.Pro42Leu	missense_variant, NMD_transcript_variant	2/15	1		ENSP00000454782
CDH1	ENST00000566510.5 linkuse as main transcript	c.125C>T	p.Pro42Leu	missense_variant, NMD_transcript_variant	2/15	5		ENSP00000458139

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152198

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.000478

GnomAD4 exome

AF:

0.00000143

AC:

AN:

1398702

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

689860

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000345

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152198

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74358

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000478

Bravo

AF:

0.0000151

ClinVar

Significance: Likely benign

Submissions summary: Uncertain:5Benign:2

Revision: reviewed by expert panel

LINK: link

Submissions by phenotype

not provided

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Mayo Clinic Laboratories, Mayo Clinic	Dec 16, 2019	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Quest Diagnostics Nichols Institute San Juan Capistrano	Feb 07, 2018	- -

Hereditary cancer-predisposing syndrome

Uncertain:1Benign:1

Likely benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Feb 14, 2024	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. -
Uncertain significance, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Feb 17, 2023	This missense variant replaces proline with leucine at codon 42 of the CDH1 protein. To our knowledge, functional studies have not been reported for this variant. This variant has been reported in an individual meeting the clinical criteria for Lynch Syndrome in the literature (PMID: 30256826). 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

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 24, 2023

This sequence change replaces proline, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 42 of the CDH1 protein (p.Pro42Leu). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with CDH1-related conditions. ClinVar contains an entry for this variant (Variation ID: 231745). 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. -

Familial cancer of breast

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Baylor Genetics

Jul 18, 2023

- -

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 02, 2023

The c.125C>T (NM_004360.5) variant in CDH1 is a missense variant predicted to cause substitution of Pro by Leu at amino acid 42 (p.Pro42Leu). This variant has been observed in more than 10 heterozygous individuals with no DGC, SRC tumours and whose families do not suggest HDGC (BS2; GeneDx, Invitae, Color). In summary, the CDH1 VCEP classified the variant as likely benign for DGLBCS based on BS2 alone based on the ACMG/AMP criteria applied, as specified by the ClinGen CDH1 VCEP: BS2. (CDH1 VCEP specifications version 3.1; 04/24/2023) -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.14

BayesDel_addAF

Benign

-0.12

BayesDel_noAF

Benign

-0.40

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.31

T;T;T;.;.

Eigen

Benign

0.11

Eigen_PC

Benign

0.077

FATHMM_MKL

Benign

0.58

LIST_S2

Uncertain

0.91

D;D;D;D;D

M_CAP

Benign

0.023

MetaRNN

Uncertain

0.52

D;D;D;D;D

MetaSVM

Benign

-0.95

MutationAssessor

Benign

1.6

L;.;.;.;L

MutationTaster

Benign

1.0

D;D

PrimateAI

Benign

0.44

PROVEAN

Uncertain

-2.9

D;.;.;.;D

REVEL

Benign

0.19

Sift

Benign

0.38

T;.;.;.;T

Sift4G

Benign

0.28

T;T;T;T;T

Polyphen

0.92

P;.;.;.;.

Vest4

0.56

MutPred

0.64

Gain of sheet (P = 0.0477);Gain of sheet (P = 0.0477);Gain of sheet (P = 0.0477);Gain of sheet (P = 0.0477);Gain of sheet (P = 0.0477);

MVP

0.83

MPC

0.47

ClinPred

0.75

GERP RS

4.7

Varity_R

0.21

gMVP

0.58

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