16-68808811-C-A
Variant summary
Our verdict is Likely benign. Variant got -1 ACMG points: 0P and 1B. BS2_Supporting
The NM_004360.5(CDH1):c.650C>A(p.Thr217Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000743 in 1,613,996 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T217I) has been classified as Uncertain significance.
Frequency
Consequence
NM_004360.5 missense
Scores
Clinical Significance
Conservation
Genome browser will be placed here
ACMG classification
Verdict is Likely_benign. Variant got -1 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
CDH1 | NM_004360.5 | c.650C>A | p.Thr217Lys | missense_variant | 5/16 | ENST00000261769.10 | |
CDH1 | NM_001317184.2 | c.650C>A | p.Thr217Lys | missense_variant | 5/15 | ||
CDH1 | NM_001317185.2 | c.-966C>A | 5_prime_UTR_variant | 5/16 | |||
CDH1 | NM_001317186.2 | c.-1170C>A | 5_prime_UTR_variant | 5/15 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
CDH1 | ENST00000261769.10 | c.650C>A | p.Thr217Lys | missense_variant | 5/16 | 1 | NM_004360.5 | P1 |
Frequencies
GnomAD3 genomes AF: 0.0000131 AC: 2AN: 152162Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.0000119 AC: 3AN: 251058Hom.: 0 AF XY: 0.0000221 AC XY: 3AN XY: 135666
GnomAD4 exome AF: 0.00000684 AC: 10AN: 1461834Hom.: 0 Cov.: 32 AF XY: 0.00000825 AC XY: 6AN XY: 727226
GnomAD4 genome AF: 0.0000131 AC: 2AN: 152162Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1AN XY: 74328
ClinVar
Submissions by phenotype
Hereditary cancer-predisposing syndrome Uncertain:3
Uncertain significance, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Dec 13, 2022 | This missense variant replaces threonine with lysine at codon 217 of the CDH1 protein. To our knowledge, functional studies have not been reported for this variant. This variant has been reported in individuals affected with breast cancer in the literature, but also in control individuals (PMID: 33471991). This variant has been identified in 3/251058 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. - |
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Mar 18, 2024 | The p.T217K variant (also known as c.650C>A), located in coding exon 5 of the CDH1 gene, results from a C to A substitution at nucleotide position 650. The threonine at codon 217 is replaced by lysine, an amino acid with similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. - |
Uncertain significance, criteria provided, single submitter | curation | Sema4, Sema4 | Sep 15, 2021 | - - |
not provided Uncertain:2
Uncertain significance, criteria provided, single submitter | clinical testing | Quest Diagnostics Nichols Institute San Juan Capistrano | Mar 25, 2019 | - - |
Uncertain significance, criteria provided, single submitter | clinical testing | GeneDx | Jul 12, 2022 | 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; Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 15235021, 22850631) - |
Hereditary diffuse gastric adenocarcinoma Uncertain:2
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Dec 29, 2023 | This sequence change replaces threonine, which is neutral and polar, with lysine, which is basic and polar, at codon 217 of the CDH1 protein (p.Thr217Lys). This variant is present in population databases (rs778382252, gnomAD 0.003%). This variant has not been reported in the literature in individuals affected with CDH1-related conditions. ClinVar contains an entry for this variant (Variation ID: 219527). 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. - |
Uncertain significance, criteria provided, single submitter | clinical testing | European Reference Network on Genetic Tumour Risk Syndromes (ERN-GENTURIS), i3s - Instituto de Investigação e Inovação em Saúde, University of Porto | Aug 01, 2022 | Not applicable criteria (PMID: 30311375) - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at