rs587782113
Variant summary
Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PP3_ModerateBS2
The NM_004360.5(CDH1):c.1423G>A(p.Val475Met) variant causes a missense change. The variant allele was found at a frequency of 0.0000103 in 1,461,890 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V475A) has been classified as Uncertain significance.
Frequency
Consequence
NM_004360.5 missense
Scores
Clinical Significance
Conservation
Publications
- blepharocheilodontic syndrome 1Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, Illumina, Labcorp Genetics (formerly Invitae), G2P
- CDH1-related diffuse gastric and lobular breast cancer syndromeInheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, G2P
- hereditary breast carcinomaInheritance: AD Classification: DEFINITIVE Submitted by: Ambry Genetics
- hereditary diffuse gastric adenocarcinomaInheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet
- cleft soft palateInheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
- orofacial cleft 3Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
- blepharocheilodontic syndromeInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- familial ovarian cancerInheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
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ACMG classification
Our verdict: Likely_benign. The variant received -2 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| CDH1 | NM_004360.5 | c.1423G>A | p.Val475Met | missense_variant | Exon 10 of 16 | ENST00000261769.10 | NP_004351.1 |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| CDH1 | ENST00000261769.10 | c.1423G>A | p.Val475Met | missense_variant | Exon 10 of 16 | 1 | NM_004360.5 | ENSP00000261769.4 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD2 exomes AF: 0.0000199 AC: 5AN: 251484 AF XY: 0.0000147 show subpopulations
GnomAD4 exome AF: 0.0000103 AC: 15AN: 1461890Hom.: 0 Cov.: 32 AF XY: 0.0000110 AC XY: 8AN XY: 727246 show subpopulations
Age Distribution
GnomAD4 genome Cov.: 32
ClinVar
Submissions by phenotype
not provided Uncertain:2
Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Identified in individuals with breast cancer, but also in unaffected controls (Momozawa et al., 2018); This variant is associated with the following publications: (PMID: 22810696, 34426522, 30287823, 15235021, 22850631) -
The frequency of this variant in the general population, 0.00012 (4/34592 chromosomes in Latino/Admixed American subpopulation, http://gnomad.broadinstitute.org), is higher than would generally be expected for pathogenic variants in this gene. In the published literature, the variant has been reported in individuals with breast cancer (PMID: 30287823 (2018), 31206626 (2019)), and in unaffected individuals (PMID: 30287823 (2018), 33471991 (2021), see also LOVD (https://databases.lovd.nl/shared/view/CDH1)). Analysis of this variant using bioinformatics tools for the prediction of the effect of amino acid changes on protein structure and function yielded predictions that this variant is damaging. Based on the available information, we are unable to determine the clinical significance of this variant. -
Hereditary cancer-predisposing syndrome Uncertain:1Benign:1
This missense variant replaces valine with methionine at codon 475 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 been identified in 5/251484 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. -
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. -
not specified Uncertain:1
Variant summary: CDH1 c.1423G>A (p.Val475Met) results in a conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 2e-05 in 251484 control chromosomes, predominantly at a frequency of 0.00012 within the Latino subpopulation in the gnomAD database. The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.1423G>A has been reported in the literature in individuals affected with breast cancer and in unaffected controls (example, Momozawa_2018, Weitzel_2019) and as a presumed somatic variant in small intestinal-type high-grade adenoma (example, Ota_2020). The variant was also reported only in the control cohort, not in the case cohort in a large case-control study for Biliary tract cancer (Okawa_2023). These report(s) do not provide unequivocal conclusions about association of the variant with Breast Cancer. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publications have been ascertained in the context of this evaluation (PMID: 30287823, 36243179, 32770675, 31206626). ClinVar contains an entry for this variant (Variation ID: 141920). Based on the evidence outlined above, the variant was classified as uncertain significance. -
Hereditary diffuse gastric adenocarcinoma Uncertain:1
This sequence change replaces valine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 475 of the CDH1 protein (p.Val475Met). This variant is present in population databases (rs587782113, gnomAD 0.01%). This missense change has been observed in individual(s) with breast cancer (PMID: 30287823, 31206626). ClinVar contains an entry for this variant (Variation ID: 141920). 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 disruptive. 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:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at