rs1255556757
Variant summary
Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BS2
The NM_004360.5(CDH1):c.865G>A(p.Ala289Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000958 in 1,461,874 control chromosomes in the GnomAD database, with no homozygous occurrence. 13/22 in silico tools predict a benign 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. A289V) has been classified as Likely benign.
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 -4 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| CDH1 | NM_004360.5 | c.865G>A | p.Ala289Thr | missense_variant | Exon 7 of 16 | ENST00000261769.10 | NP_004351.1 | |
| CDH1 | NM_001317184.2 | c.865G>A | p.Ala289Thr | missense_variant | Exon 7 of 15 | NP_001304113.1 | ||
| CDH1 | NM_001317185.2 | c.-751G>A | 5_prime_UTR_variant | Exon 7 of 16 | NP_001304114.1 | |||
| CDH1 | NM_001317186.2 | c.-955G>A | 5_prime_UTR_variant | Exon 7 of 15 | NP_001304115.1 |
Ensembl
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD2 exomes AF: 0.00000398 AC: 1AN: 251464 AF XY: 0.00000736 show subpopulations
GnomAD4 exome AF: 0.00000958 AC: 14AN: 1461874Hom.: 0 Cov.: 32 AF XY: 0.0000124 AC XY: 9AN XY: 727240 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 does not alter protein structure/function; Observed in a breast cancer case-control study, but it's not clear whether the variant was identified in case(s) or control(s) (Adedokun et al., 2020); This variant is associated with the following publications: (PMID: 15235021, 22850631, 31871109) -
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Hereditary cancer-predisposing syndrome Uncertain:1Benign:1
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. -
This missense variant replaces alanine with threonine at codon 289 of the CDH1 protein. To our knowledge, functional studies have not been reported for this variant. This variant has been reported in an individual affected with breast cancer in the literature (PMID: 31871109). This variant has been identified in 1/251464 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. -
Hereditary diffuse gastric adenocarcinoma Uncertain:1
This sequence change replaces alanine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 289 of the CDH1 protein (p.Ala289Thr). This variant is present in population databases (no rsID available, gnomAD 0.0009%). This missense change has been observed in individual(s) with breast cancer and pancreatic cancer (PMID: 31871109, 35171259). ClinVar contains an entry for this variant (Variation ID: 532469). 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. -
Familial cancer of breast Uncertain:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at