ClinVar Miner

Submissions for variant NM_001927.4(DES):c.1346A>C (p.Lys449Thr)

dbSNP: rs267607485
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Total submissions: 7
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Eurofins Ntd Llc (ga) RCV000056786 SCV000335262 likely pathogenic not provided 2015-09-11 criteria provided, single submitter clinical testing
CeGaT Center for Human Genetics Tuebingen RCV000056786 SCV001502389 pathogenic not provided 2022-12-01 criteria provided, single submitter clinical testing DES: PP1:Strong, PM2, PS4:Moderate, PP3, PP4, PS3:Supporting
Labcorp Genetics (formerly Invitae), Labcorp RCV001854166 SCV002238968 pathogenic Desmin-related myofibrillar myopathy 2022-07-29 criteria provided, single submitter clinical testing For these reasons, this variant has been classified as Pathogenic. Experimental studies have shown that this missense change affects DES function (PMID: 17221859). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). ClinVar contains an entry for this variant (Variation ID: 66400). This missense change has been observed in individuals with clinical features of autosomal dominant desminopathy (PMID: 14711882, 23051780, 29892087). It has also been observed to segregate with disease in related individuals. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces lysine, which is basic and polar, with threonine, which is neutral and polar, at codon 449 of the DES protein (p.Lys449Thr).
Athena Diagnostics RCV000056786 SCV002770669 likely pathogenic not provided 2021-06-22 criteria provided, single submitter clinical testing This variant has not been reported in large, multi-ethnic general populations (http://gnomad.broadinstitute.org). This variant appears to be associated with disease in at least one family with myofibrillar myopathy (PMID: 23051780) and one family with dilated cardiomyopathy (PMID: 29892087). Assessment of experimental evidence regarding the effect of this variant on protein function is inconclusive. Though studies suggest that this variant impacts filament-formation in some in vitro experiments, additional research is needed to understand how this relates to disease in vivo (PMID: 17221859). Additionally, though patient-derived samples have shown abnormal desmin aggregates, it is possible that results could be influenced by factors other than this variant (PMID: 23051780). Computational tools predict that this variant is damaging.
Victorian Clinical Genetics Services, Murdoch Childrens Research Institute RCV001854166 SCV005398106 pathogenic Desmin-related myofibrillar myopathy 2023-07-17 criteria provided, single submitter clinical testing Based on the classification scheme VCGS_Germline_v1.3.4, this variant is classified as Pathogenic. Following criteria are met: 0103 - Dominant negative and loss of function are known mechanisms of disease in this gene and are associated with dilated cardiomyopathy 1I (MIM#604765), myofibrillar myopathy 1 (MIM#601419) and Kaeser type neurogenic scapuloperoneal syndrome (MIM#181400). (I) 0108 - This gene is associated with both recessive and dominant disease. The majority of disease-associated DES variants exhibit autosomal dominant inheritance, with rare cases of biallelic truncating and missense variants reported for myopathy (PMID: 29926427). (I) 0200 - Variant is predicted to result in a missense amino acid change from lysine to threonine. (I) 0251 - This variant is heterozygous. (I) 0301 - Variant is absent from gnomAD (both v2 and v3). (SP) 0501 - Missense variant consistently predicted to be damaging by multiple in silico tools or highly conserved with a major amino acid change. (SP) 0604 - Variant is not located in an established domain, motif, hotspot or informative constraint region (DECIPHER). (I) 0801 - This variant has strong previous evidence of pathogenicity in unrelated individuals. It has been reported in association with myofibrillar myopathy (PMIDs: 23051780, 29926427) and dilated cardiomyopathy (PMID: 29892087). In addition, it is regarded likely pathogenic and pathogenic in ClinVar by diagnostic laboratories. (SP) 0901 - This variant has strong evidence for segregation with disease. It was shown to segregate with myofibrillar myopathy in a multi-generational Irish family (PMID: 23051780). (SP) 1208 - Inheritance information for this variant is not currently available in this individual. (I) Legend: (SP) - Supporting pathogenic, (I) - Information, (SB) - Supporting benign
Epithelial Biology; Institute of Medical Biology, Singapore RCV000056786 SCV000087899 not provided not provided no assertion provided not provided
Wellcome Centre for Mitochondrial Research, Newcastle University RCV000239724 SCV000298020 pathogenic Myofibrillar myopathy 2016-08-16 no assertion criteria provided clinical testing

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