rs771551231
Variant summary
Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2
The NM_001317185.2(CDH1):c.-23C>A variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000013 in 1,614,106 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Consequence
NM_001317185.2 5_prime_UTR_premature_start_codon_gain
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -4 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
CDH1 | NM_004360.5 | c.1526C>A | p.Thr509Asn | missense_variant | Exon 10 of 16 | ENST00000261769.10 | NP_004351.1 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152216Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.00000795 AC: 2AN: 251480Hom.: 0 AF XY: 0.00000736 AC XY: 1AN XY: 135914
GnomAD4 exome AF: 0.0000137 AC: 20AN: 1461890Hom.: 0 Cov.: 32 AF XY: 0.0000110 AC XY: 8AN XY: 727244
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152216Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74364
ClinVar
Submissions by phenotype
not provided Uncertain:3
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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; Observed in breast cancer cases but also in unaffected controls (PMID: 33471991); This variant is associated with the following publications: (PMID: 36436516, 33471991, 15235021, 22850631) -
The frequency of this variant in the general population, 0.000008 (2/251480 chromosomes, http://gnomad.broadinstitute.org), is uninformative in assessment of its pathogenicity. In the published literature, the variant was found both in individuals with breast cancer as well as unaffected individuals in a large breast cancer association study (PMID: 33471991 (2021), see also LOVD (https://databases.lovd.nl/shared/variants/CDH1). Analysis of this variant using bioinformatics tools for the prediction of the effect of amino acid changes on protein structure and function yielded conflicting predictions that this variant is benign or damaging. Based on the available information, we are unable to determine the clinical significance of this variant. -
Hereditary diffuse gastric adenocarcinoma Uncertain:2
PM2 (PMID: 30311375) -
This sequence change replaces threonine, which is neutral and polar, with asparagine, which is neutral and polar, at codon 509 of the CDH1 protein (p.Thr509Asn). This variant is present in population databases (rs771551231, gnomAD 0.002%). This missense change has been observed in individual(s) with a personal history of cancer (PMID: 36436516). ClinVar contains an entry for this variant (Variation ID: 239884). 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. -
Hereditary cancer-predisposing syndrome Uncertain:1Benign:1
This missense variant replaces threonine with asparagine at codon 509 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 an unspecified cancer (PMID: 36436516) and in a large breast cancer case-control study, this variant has been reported in 1/60466 cases and 1/53461 unaffected controls (PMID: 33471991). This variant has been identified in 2/251480 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. -
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