The study has revealed a greater frequency of occurrence of PKP2 mutations when compared to DSG2 mutations. (3) Phenotypic influence on lethal VAs was less potent in truncating mutation carriers whose arrhythmic risk was independent of phenotype severity. The disease is caused by mutations affecting the gene represented in this entry. Conclusions Five novel heterozygous mutations (R158K, Q211X, L419S, A793D and N852fsX930) of PKP2 and three heterozygous mutations (R46G, D494A and F531C) of DSG2 were identified. The DSG2 gene encodes the protein desmoglein-2. ARVC/D patients with compound heterozygous mutations in the DSG2 gene or digenic mutations in the DSG2 and DSC2 genes have been reported (Awad et al. DSG2 mutations were predominant over those of PKP2 or other desmosomal genes. Aims Mutations in the desmoglein-2 (DSG2) gene have been reported in patients with arrhythmogenic right ventricular cardiomyopathy (ARVC) but clinical information regarding the associated phenotype is at present limited. Haploinsufficiency phenotype comments: Desmoglein-2 (DSG2) is a member of the desmoglein family and is expressed in myocardium. Conclusions-Mutations in DSG2 and DSC2 are together less prevalent (10%) than PKP2 mutations (40%) in Dutch TFC+ ARVD/C patients. Nine heterozygous DSG2 mutations (5 missense, 2 insertion-deletions, 1 nonsense, and 1 splice site mutation) were detected in 8 probands (10%). Desmoglein-2 (DSG2) is a specific cadherin of the cell-cell contact in cardiac desmosomes. These results further support the recent human genetic findings that loss of function mutations in the CSTA gene result in skin fragility due to impaired cell-cell adhesion: autosomal-recessive exfoliative ichthyosis or acral peeling skin syndrome. All probands fulfilled task force criteria for ARVC. Keratoderma with woolly hair. Mutations in this gene have been associated with arrhythmogenic right ventricular dysplasia, familial, 10. Gene symbol: Chromosomal location: Gene name: Mutation total: Log in: DSG2: 18q12.1: Desmoglein 2: 99 One of these probands has compound-heterozygous mutations in DSG2, and the remaining three have isolated heterozygous missense mutations, each disrupting known functional components of desmoglein-2. (2) Cardiac outcome could be stratified by mutation status and age. An endomyocardial biopsy was obtained in 5, showing extensive … 1 Nine heterozygous DSG2 mutations (5 missense, 2 insertion-deletions, 1 nonsense, and 1 splice site mutation) were detected in subjects with ARVC. PMID: 16505173; mutations in DSG2 contribute to the development ofarrhythmogenic right ventricular dysplasia/cardiomyopathy PMID: 16773573 17 Because of the association between mutations in three components of the cardiac desmosome and ARVD/C, we analyzed probands with this disorder for mutations in DSG2, which encodes desmoglein-2. Desmoglein-2 and Desmocollin-2 Mutations in Dutch Arrhythmogenic Right Ventricular Dysplasia/Cardiomypathy Patients: Results From a Multicenter Study Our findings here offer a novel pathway of CSTA regulation involving Dsg2 and a potential crosstalk between Dsg2 and CSTA that modulates cell adhesion. Further supporting evidence for a pathogenic role comes from a report of a similar mutation at amino acid position 812 of DSG2 (heterozygous glycine to cysteine change: DSG2 G812C), which has been found to be causative for ARVC in a U.S. patient. 7, 8 This process has been shown in classical cadherins to unmask the N-terminal EC1 domain and its tryptophan residue at position 2 (Trp-2), elements essential for Ca 2+-dependent trans-interactions. DSG2 mutations contribute to arrhythmogenic right ventricular dysplasia/cardiomyopathy. The pathogenic mutation related to ARVC/D, hypertrophic cardiomyopathy (HCM) and dilated cardiomyopathy (DCM) were displayed according to PubMed ClinVar and recent reports from PubMed. The majority of causative variants are missense mutations, however, nonsense, small insertions or deletions, and splicing mutations have also been reported. Nine heterozygous DSG2 mutations (5 missense, 2 insertion-deletions, 1 nonsense, and 1 splice site mutation) were detected in 8 probands (10%). Interestingly, biallelic or digenic DSC2 and/or DSG2 mutations are frequently identified in TFC+ ARVD/C patients, suggesting that a single mutation is less likely to cause a full-blown ARVD/C phenotype. Arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVD/C) is a disorder characterized by fibrofatty replacement of cardiac myocytes that typically manifests in the right ventricle. Abstract. Studies investigating two heterozygous DSC2 mutations have shown that certain mutations in the N-terminal region can modify the subcellular localization of desmocollin-2 from the desmosomal plaque to the cytoplasm. Mutations in the DSG2 gene are associated with rare but severe heart muscle diseases such as arrhythmogenic right ventricular cardiomyopathy (ARVC). (provided by RefSeq, Jul 2008) GeneCards Summary for DSG2 Gene: DSG2 (desmoglein 2) is a protein-coding gene. There are some difference between patients with PKP2 mutation and that with DSG2 mutation … This protein is part of the desmosome complex, which is present in both muscle and skin cells. 2,3 The majority of these mutations are insertion/deletion or nonsense mutations, which are expected to cause premature termination of the encoded proteins. Pathogenic mutations in the DSG2 protein and structure of KCNE5 mutations. Desmoglein-2 (Dsg2) is a specific cadherin of the cell-cell contact in cardiac desmosomes. And immunofluorescence staining demonstrated the expression of CX43 decreased in intercalated discs. Diseases associated with DSG1 include Erythroderma, Congenital, With Palmoplantar Keratoderma, Hypotrichosis, And Hyper-Ige and Palmoplantar Keratoderma I, Striate, Focal, Or Diffuse.Among its related pathways are Keratinization and Apoptotic execution phase. These mutations, that account for ∼40% of DSG2 mutations, 2 are predicted to abolish DSG2 propeptide cleavage. KEGG is a database resource for understanding high-level functions and utilities of the biological system, such as the cell, the organism and the ecosystem, from molecular-level information, especially large-scale molecular datasets generated by genome sequencing and … Interactions. These results show that DSG2-F531C mutation can destroy the structure of desmosome. Nine heterozygous DSG2 mutations (5 missense, 2 insertion-deletions, 1 nonsense, and 1 splice site mutation) were detected in 8 probands (10%). Because of this asymmetrical distribution of mutated genes, the effectiveness of this risk score to predict events in patients with DSP or DSG2 mutation was not guaranteed. DSG1 (Desmoglein 1) is a Protein Coding gene. Desmocollin-2 has been shown to interact with: DSG2; JUP; References It is inherited as an autosomal dominant disease with reduced penetrance, although autosomal recessive forms of the disease also occur. Conclusions: The mutation of DSG2-F531C is a pathogenic mutation of ARVC, and further, DSG2-F531C caused ARVC in human and knock-in mice is gene dose-dependent. The molecular pathomechanisms of the vast majority of DSG2 mutations, however, are unknown. Mutations in the DSG2-gene are regarded to cause arrhythmogenic (right ventricular) cardiomyopathy (ARVC) which is a rare but severe heart muscle disease. No association between mutations in this gene and human disease has been reported elsewhere. DSG2 is an essential component of the desmosome so mutations of this gene disrupt the proper organization of desmosomal junctions. Awad MM, Dalal D, Cho E, Amat-Alarcon N, James C, Tichnell C, Tucker A, … Interestingly, biallelic or digenic DSC2 and/or DSG2 mutations are frequently identified in TFC+ ARVD/C patients, suggesting that a single mutation is less likely to cause a full-blo … DSG2 is expressed in many tissues, including the myocardium. Mutations in DSG2 and DSC2 are together less prevalent (10%) than PKP2 mutations (40%) in Dutch TFC+ ARVD/C patients. View mouse Dsg2 Chr18:20558074-20604521 with: phenotypes, sequences, polymorphisms, proteins, references, function, expression Diseases associated with DSG2 include arrhythmogenic right ventricular dysplasia 10, and cardiomyopathy, dilated, 1bb. Furthermore, in Cadrin‐Tourigny's study, among the 340 patients with mutations, 258 (76%) patients had a PKP2 mutation, while DSP was involved in 7% and DSG2 in 5% of patients. All probands fulfilled task force criteria for ARVC. An endomyocardial biopsy was obtained in 5, showing extensive … Both novel missense mutations DSG2 G812S and DSG2 C813R were absent in 400 control individuals. The role of rare variants in DSG2 as causative mutations in Dilated Cardiomyopathy is described below. 28 Jan 2019, Gel status: 1 Created, Added New Source, Set mode of inheritance, Set Phenotypes Rebecca Foulger (Genomics England curator) gene: DSG2 was added gene: DSG2 … To identify early changes in gene expression that are caused by Dsg2 mutation, transcriptome profiles of heart tissue were determined for 2-week-old, macroscopically normal-appearing hearts of Dsg2 mt/mt mice and compared to those of matched hearts obtained from Dsg2 wt/wt and Dsg2 mt/wt mice (n=3 in each instance). All probands fulfilled task force criteria for ARVC. DSG2 A gene on chromosome 18q12.1 that encodes desmoglein 2, a calcium-binding transmembrane glycoprotein component of desmosomes expressed in the colon, in colorectal carcinoma, and in other simple and stratified epithelial-derived cell lines. At least one mutation in the DSC2 gene has been found to cause a form of keratoderma with woolly hair classified as type III. The primary role of the desmosome is to adhere cells to each other, thus maintaining the structural integrity of skin and muscle tissues. Am J Hum Genet 79:136-142, 2006). Therefore, ARVD is currently considered, at least in a subset, a disease of the cardiac desmosome. However, the molecular pathomechanism of many DSG2 mutations is … a secondary structure of DSG2 protein (NP_001934.2), which consists of 1118 amino acids. Expression of Acta1 mRNA is increased in Dsg2 mutant myocardium. Mutations in DSG2 and DSP each account for approximately 10% to 15% of cases. 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