Total submissions: 2
Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
---|---|---|---|---|---|---|---|---|
Invitae | RCV000700932 | SCV000829709 | uncertain significance | Bloom syndrome | 2022-02-18 | criteria provided, single submitter | clinical testing | This sequence change replaces aspartic acid, which is acidic and polar, with valine, which is neutral and non-polar, at codon 563 of the BLM protein (p.Asp563Val). This variant is present in population databases (no rsID available, gnomAD 0.004%). This variant has not been reported in the literature in individuals affected with BLM-related conditions. ClinVar contains an entry for this variant (Variation ID: 578042). 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: "Probably Damaging"; Align-GVGD: "Class C0"). 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. |
Ambry Genetics | RCV003352995 | SCV004076517 | uncertain significance | Hereditary cancer-predisposing syndrome | 2023-07-13 | criteria provided, single submitter | clinical testing | The p.D563V variant (also known as c.1688A>T), located in coding exon 6 of the BLM gene, results from an A to T substitution at nucleotide position 1688. The aspartic acid at codon 563 is replaced by valine, an amino acid with highly dissimilar properties. This amino acid position is not 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. |