rs2276331
Variant summary
Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BA1
This summary comes from the ClinGen Evidence Repository: The c.1888C>G (p.Leu630Val) variant has an allele frequency of 0.00519 (0.52%, 98/18,866 alleles) in the East Asian subpopulation of the gnomAD cohort (BA1). In summary, this variant meets criteria to be classified as benign. ACMG/AMP criteria applied, as specified by the CDH1 Variant Curation Expert Panel (Variant Interpretation Guidelines Version 3.1): BA1. LINK:https://erepo.genome.network/evrepo/ui/classification/CA157951/MONDO:0007648/007
Frequency
Consequence
NM_004360.5 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Benign. Variant got -8 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
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CDH1 | NM_004360.5 | c.1888C>G | p.Leu630Val | missense_variant | Exon 12 of 16 | ENST00000261769.10 | NP_004351.1 | |
CDH1 | NM_001317184.2 | c.1705C>G | p.Leu569Val | missense_variant | Exon 11 of 15 | NP_001304113.1 | ||
CDH1 | NM_001317185.2 | c.340C>G | p.Leu114Val | missense_variant | Exon 12 of 16 | NP_001304114.1 | ||
CDH1 | NM_001317186.2 | c.-78C>G | 5_prime_UTR_variant | Exon 11 of 15 | NP_001304115.1 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.000158 AC: 24AN: 152144Hom.: 0 Cov.: 31
GnomAD3 exomes AF: 0.000378 AC: 95AN: 251472Hom.: 0 AF XY: 0.000324 AC XY: 44AN XY: 135910
GnomAD4 exome AF: 0.000166 AC: 243AN: 1461884Hom.: 0 Cov.: 32 AF XY: 0.000164 AC XY: 119AN XY: 727246
GnomAD4 genome AF: 0.000158 AC: 24AN: 152262Hom.: 0 Cov.: 31 AF XY: 0.000228 AC XY: 17AN XY: 74448
ClinVar
Submissions by phenotype
Hereditary diffuse gastric adenocarcinoma Benign:4
BA1 (PMID: 30311375) -
This variant is considered benign. This variant has been observed at a population frequency that is significantly greater than expected given the associated disease prevalence and penetrance. Homozygosity has been confirmed in one or more individuals. As homozygosity for pathogenic variants in this gene is generally assumed to result in embryonic lethality, this variant is unlikely to be pathogenic. -
This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to rule this variant out of causing disease. Therefore, this variant is classified as benign. -
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Hereditary cancer-predisposing syndrome Benign:3
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This alteration is classified as 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 provided Benign:2
This variant is associated with the following publications: (PMID: 30022640, 29770616, 25980754, 23431106, 26757417, 27227907, 26707089, 25648022, 24728327, 28580595, 29212164, 32426482) -
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not specified Benign:1Other:1
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Variant summary: CDH1 c.1888C>G (p.Leu630Val) results in a conservative amino acid change located in the Cadherin of the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The observed variant frequency within East Asian control individuals in the gnomAD database is approximately 183.84 fold of the estimated maximal expected allele frequency for a pathogenic variant in CDH1 causing Hereditary Diffuse Gastric Cancer phenotype (2.8e-05), strongly suggesting that the variant is a benign polymorphism found primarily in populations of East Asian origin. The variant allele was found at a frequency of 0.00037 in 277212 control chromosomes, predominantly at a frequency of 0.0052 within the East Asian subpopulation in the gnomAD database. The observed variant frequency within East Asian control individuals in the gnomAD database is approximately 250 fold of the estimated maximal expected allele frequency for a pathogenic variant in CDH1 causing Hereditary Breast and Ovarian Cancer phenotype (2.1e-05), strongly suggesting that the variant is a benign polymorphism found primarily in populations of East Asian origin. c.1888C>G has been reported in the literature in individuals affected with Hereditary Breast and Ovarian Cancer. These report(s) do not provide unequivocal conclusions about association of the variant with Hereditary Breast and Ovarian Cancer. Co-occurrences with other pathogenic variant(s) have been reported (BRIP1 del exons 4-5), providing supporting evidence for a benign role. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Four clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. All laboratories classified the variant as benign/likely benign. Based on the evidence outlined above, the variant was classified as likely benign. -
Breast and/or ovarian cancer Benign:1
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CDH1-related diffuse gastric and lobular breast cancer syndrome Benign:1
The c.1888C>G (p.Leu630Val) variant has an allele frequency of 0.00519 (0.52%, 98/18,866 alleles) in the East Asian subpopulation of the gnomAD cohort (BA1). In summary, this variant meets criteria to be classified as benign. ACMG/AMP criteria applied, as specified by the CDH1 Variant Curation Expert Panel (Variant Interpretation Guidelines Version 3.1): BA1. -
Malignant tumor of breast Benign:1
The CDH1 p.Leu630Val variant was identified in 3 of 512 proband chromosomes (frequency: 0.006) from individuals or families with gastric cancer or oral cleft and was present in 2 of 480 control chromosomes (frequency: 0.004) from healthy individuals (Chen 2013, Huang 2017). The variant was also identified in dbSNP (ID: rs2276331) as "With other allele", ClinVar (classified as benign by ClinGen CDH1 Variant Curation Expert Panel, Ambry Genetics, Invitae; and as likely benign by GeneDx, Quest Diagnostics, Color Genomics). The variant was identified in control databases in 102 of 277212 chromosomes at a frequency of 0.0004 increasing the likelihood this could be a low frequency benign variant (Genome Aggregation Database Feb 27, 2017). The variant was observed in the following populations: Other in 3 of 6464 chromosomes (freq: 0.0005), East Asian in 98 of 18866 chromosomes (freq: 0.005), and South Asian in 1 of 30782 chromosomes (freq: 0.00003); it was not observed in the African, Latino, European Non-Finnish, Ashkenazi Jewish, or Finnish, populations. Two studies assessed the p.Leu630Val variant using in silico analysis and consider it to be “probably damaging”, however it was recommended that in vitro studies would be necessary to confirm the findings (Chen 2013, Santhiya 2013). The p.Leu630 residue is conserved in mammals and computational analyses (PolyPhen-2, SIFT, AlignGVGD, BLOSUM, MutationTaster) provide inconsistent predictions regarding the impact to the protein; this information is not very predictive of pathogenicity. The variant occurs outside of the splicing consensus sequence and in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer) do not predict a difference in splicing. In summary, based on the above information the clinical significance of this variant cannot be determined with certainty at this time although we would lean towards a more benign role for this variant. This variant is classified as likely benign. -
Hereditary breast ovarian cancer syndrome Benign:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at