Total submissions: 7
Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
---|---|---|---|---|---|---|---|---|
Ambry Genetics | RCV000251778 | SCV000320640 | likely pathogenic | Cardiovascular phenotype | 2022-07-15 | criteria provided, single submitter | clinical testing | The p.D955N variant (also known as c.2863G>A), located in coding exon 21 of the MYH7 gene, results from a G to A substitution at nucleotide position 2863. The aspartic acid at codon 955 is replaced by asparagine, an amino acid with highly similar properties. This variant along with MYH7 p.D545N in cis reportedly co-segregated with disease in families with dilated cardiomyopathy (DCM) and left ventricular non-compaction (Hoedemaekers YM et al. Eur Heart J. 2007;28(22):2732-7; van den Berg MP et al. Eur J Heart Fail. 2010;12(12):1297-9). Both p.D545N and p.D955N were detected in another LVNC cohort; however, additional details were limited (Chang B. Mol Genet Metab. 2011 Feb;102(2):200-6). This alteration also segregated with the TNNT2 p.N83H variant in multiple members of a consanguineous family with DCM; individuals with either variant alone were unaffected (Petropoulou E et al. Eur J Med Genet, 2017 Sep;60:485-488). This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Based on the majority of available evidence to date, this variant is likely to be pathogenic when in cis with MYH7 p.D545N; however, the clinical significance of the p.D955N variant alone is unclear. |
Invitae | RCV000552105 | SCV000623686 | uncertain significance | Hypertrophic cardiomyopathy | 2022-05-10 | criteria provided, single submitter | clinical testing | This sequence change replaces aspartic acid, which is acidic and polar, with asparagine, which is neutral and polar, at codon 955 of the MYH7 protein (p.Asp955Asn). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with left ventricular noncompaction or dilated cardiomyopathy (PMID: 20965760, 23349452, 29447731). ClinVar contains an entry for this variant (Variation ID: 264608). 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: "Deleterious"; PolyPhen-2: "Not Available"; Align-GVGD: "Class C15"). 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. |
Gene |
RCV001529965 | SCV002013666 | uncertain significance | not provided | 2022-10-26 | criteria provided, single submitter | clinical testing | Identified in patients with cardiomyopathy in published literature; however, all probands were found to harbor other variants in MYH7 or another cardiomyopathy-associated gene (Hoedemaekers et al., 2007; vanSpaendonck-Zwarts et al., 2013; Petropoulou et al., 2017; van Waning et al., 2018); 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; This variant is associated with the following publications: (PMID: 17947214, 23349452, 29447731, 28642161, 25332820, 20952769, 30650640, 20965760) |
Mayo Clinic Laboratories, |
RCV001529965 | SCV004226499 | uncertain significance | not provided | 2023-04-14 | criteria provided, single submitter | clinical testing | PM2_supporting |
Diagnostic Laboratory, |
RCV001529965 | SCV001744363 | pathogenic | not provided | no assertion criteria provided | clinical testing | ||
Clinical Genetics, |
RCV001529965 | SCV001924777 | pathogenic | not provided | no assertion criteria provided | clinical testing | ||
Clinical Genetics DNA and cytogenetics Diagnostics Lab, |
RCV001529965 | SCV001971399 | pathogenic | not provided | no assertion criteria provided | clinical testing |