Total submissions: 2
Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
---|---|---|---|---|---|---|---|---|
Labcorp Genetics |
RCV002011171 | SCV002288669 | uncertain significance | Bloom syndrome | 2020-12-27 | criteria provided, single submitter | clinical testing | 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. 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: "Possibly Damaging"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals with BLM-related conditions. This variant is not present in population databases (ExAC no frequency). This sequence change replaces serine with tyrosine at codon 1228 of the BLM protein (p.Ser1228Tyr). The serine residue is weakly conserved and there is a large physicochemical difference between serine and tyrosine. |
Ambry Genetics | RCV003355756 | SCV004051491 | uncertain significance | Hereditary cancer-predisposing syndrome | 2023-07-12 | criteria provided, single submitter | clinical testing | The p.S1228Y variant (also known as c.3683C>A), located in coding exon 18 of the BLM gene, results from a C to A substitution at nucleotide position 3683. The serine at codon 1228 is replaced by tyrosine, an amino acid with dissimilar properties. This amino acid position is conserved. 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. |