rs587778171
Variant summary
Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BS2
This summary comes from the ClinGen Evidence Repository: The c.113C>A (p.Thr38Lys) variant results in a non-synonymous amino acid substitution in exon 2 of CDH1. This variant has been observed in at least 10 individuals without DGC, LBC or SRC tumors and whose families do not suggest HDGC (BS2; SCV000637699.3, SCV000275215.5). In summary, this variant meets criteria to be classified as likely benign based the ACMG/AMP criteria applied, as specified by the CDH1 Variant Curation Expert Panel (Variant Interpretation Guidelines Version 3.1): BS2. LINK:https://erepo.genome.network/evrepo/ui/classification/CA8129795/MONDO:0007648/007
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.113C>A | p.Thr38Lys | missense_variant | Exon 2 of 16 | ENST00000261769.10 | NP_004351.1 | |
| CDH1 | NM_001317184.2 | c.113C>A | p.Thr38Lys | missense_variant | Exon 2 of 15 | NP_001304113.1 | ||
| CDH1 | NM_001317185.2 | c.-1503C>A | 5_prime_UTR_variant | Exon 2 of 16 | NP_001304114.1 | |||
| CDH1 | NM_001317186.2 | c.-1707C>A | 5_prime_UTR_variant | Exon 2 of 15 | NP_001304115.1 | 
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt | 
|---|---|---|---|---|---|---|---|---|---|---|
| CDH1 | ENST00000261769.10 | c.113C>A | p.Thr38Lys | missense_variant | Exon 2 of 16 | 1 | NM_004360.5 | ENSP00000261769.4 | ||
| CDH1 | ENST00000422392.6 | c.113C>A | p.Thr38Lys | missense_variant | Exon 2 of 15 | 1 | ENSP00000414946.2 | |||
| CDH1 | ENST00000566612.5 | n.113C>A | non_coding_transcript_exon_variant | Exon 2 of 15 | 1 | ENSP00000454782.1 | ||||
| CDH1 | ENST00000566510.5 | n.113C>A | non_coding_transcript_exon_variant | Exon 2 of 15 | 5 | ENSP00000458139.1 | 
Frequencies
GnomAD3 genomes  0.00000657  AC: 1AN: 152224Hom.:  0  Cov.: 32 show subpopulations 
GnomAD2 exomes  AF:  0.0000191  AC: 3AN: 156704 AF XY:  0.0000242   show subpopulations 
GnomAD4 exome  AF:  0.00000858  AC: 12AN: 1398866Hom.:  0  Cov.: 31 AF XY:  0.00000870  AC XY: 6AN XY: 689938 show subpopulations 
Age Distribution
GnomAD4 genome  0.00000657  AC: 1AN: 152224Hom.:  0  Cov.: 32 AF XY:  0.00  AC XY: 0AN XY: 74380 show subpopulations  ⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. 
Age Distribution
ClinVar
Submissions by phenotype
Hereditary cancer-predisposing syndrome    Uncertain:2 
The p.T38K variant (also known as c.113C>A), located in coding exon 2 of the CDH1 gene, results from a C to A substitution at nucleotide position 113. The threonine at codon 38 is replaced by lysine, an amino acid with similar properties. This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
This missense variant replaces threonine with lysine at codon 38 of the CDH1 protein. To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with CDH1-related disorders in the literature. This variant has been identified in 3/156704 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 threonine, which is neutral and polar, with lysine, which is basic and polar, at codon 38 of the CDH1 protein (p.Thr38Lys). This variant is present in population databases (rs587778171, gnomAD 0.009%). 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: 231383). 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. -
CDH1-related diffuse gastric and lobular breast cancer syndrome    Benign:1 
The c.113C>A (p.Thr38Lys) variant results in a non-synonymous amino acid substitution in exon 2 of CDH1. This variant has been observed in at least 10 individuals without DGC, LBC or SRC tumors and whose families do not suggest HDGC (BS2; SCV000637699.3, SCV000275215.5). In summary, this variant meets criteria to be classified as likely benign based the ACMG/AMP criteria applied, as specified by the CDH1 Variant Curation Expert Panel (Variant Interpretation Guidelines Version 3.1): BS2. -
Computational scores
Source: 
Splicing
 Find out detailed SpliceAI scores and Pangolin per-transcript scores at