16-68828262-C-T
Variant summary
Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP2BA1
This summary comes from the ClinGen Evidence Repository: The NM_004360.5(CDH1):c.2253C>T (p.Asn751=) variant has an allele frequency of 0.10006 (10%, 3546/35438 alleles, 185 homozygotes) in the Latino subpopulation of the gnomAD v2.1.1 cohort (BA1; BP2). Therefore, 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, BP2. LINK:https://erepo.genome.network/evrepo/ui/classification/CA167533/MONDO:0007648/007
Frequency
Consequence
NM_004360.5 synonymous
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: Benign. The variant received -9 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| CDH1 | NM_004360.5 | c.2253C>T | p.Asn751Asn | synonymous_variant | Exon 14 of 16 | ENST00000261769.10 | NP_004351.1 | |
| CDH1 | NM_001317184.2 | c.2070C>T | p.Asn690Asn | synonymous_variant | Exon 13 of 15 | NP_001304113.1 | ||
| CDH1 | NM_001317185.2 | c.705C>T | p.Asn235Asn | synonymous_variant | Exon 14 of 16 | NP_001304114.1 | ||
| CDH1 | NM_001317186.2 | c.288C>T | p.Asn96Asn | synonymous_variant | Exon 13 of 15 | NP_001304115.1 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0391 AC: 5949AN: 152028Hom.: 139 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0429 AC: 10791AN: 251474 AF XY: 0.0400 show subpopulations
GnomAD4 exome AF: 0.0330 AC: 48303AN: 1461686Hom.: 1031 Cov.: 33 AF XY: 0.0327 AC XY: 23784AN XY: 727158 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0392 AC: 5965AN: 152146Hom.: 142 Cov.: 32 AF XY: 0.0398 AC XY: 2959AN XY: 74356 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
not specified Benign:5
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Hereditary diffuse gastric adenocarcinoma Benign:4
This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -
This variant is considered benign. This variant is a silent/synonymous amino acid change and it is not expected to impact splicing. -
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not provided Benign:3
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Hereditary cancer-predisposing syndrome Benign:2
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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. -
Prostate cancer Benign:1
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Malignant tumor of breast Benign:1
The CDH1 p.Asn751Asn variant was identified in 57 of 2080 proband chromosomes (frequency: 0.0274038461538462) from individuals or families with gastric cancer (Becker 1994, Berx 1997, Chen 2013, Chu 2014, Fang 2013, Zhang 2006). The variant was also identified in dbSNP (rs: rs33964119) with benign allele, ClinVar (4x as benign), Cosmic (as neutral), and the Zhejiang Colon Cancer Database (4x). The variant was not identified in MutDB, or Insight Colon Cancer Gene Variant Database. The variant was identified in control databases in 11569 of 277194 chromosomes at a frequency of 0.041736 increasing the likelihood this could be a low frequency benign variant (Genome Aggregation Consortium Feb 27, 2017). The variant was identified in the following populations at a frequency greater than 1%: Latino in 3462 (181 homozygous) of 34416 chromosomes (freq: 0.101), East Asian in 1459 (64 homozygous) of 18858 chromosomes (freq: 0.077), African in 1243 (39 homozygous) of 24026 chromosomes (freq: 0.052), South Asian in 1355 (48 homozygous) of 30782 chromosomes (freq: 0.044), Other in 232 (5 homozygous) of 6468 chromosomes (freq: 0.036), European (Non-Finnish) in 3253 (38 homozygous) of 126698 chromosomes (freq: 0.026), European (Finnish) in 448 of 25794 chromosomes (freq: 0.017). In addition, several studies classify the variant as a benign polymorphism (Berx 1997, Chen 2013, Chu 2014, Milne 2007). The p.Asn751Asn variant is not expected to have clinical significance because it does not result in a change of amino acid and is not located in a known consensus splice site. In addition, in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer, HumanSpliceFinder) do not predict a difference in splicing. In summary, based on the above information this variant meets our laboratory's criteria to be classified as benign. -
CDH1-related diffuse gastric and lobular breast cancer syndrome Benign:1
The NM_004360.5(CDH1):c.2253C>T (p.Asn751=) variant has an allele frequency of 0.10006 (10%, 3546/35438 alleles, 185 homozygotes) in the Latino subpopulation of the gnomAD v2.1.1 cohort (BA1; BP2). Therefore, 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, BP2. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at