Total submissions: 2
| Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
|---|---|---|---|---|---|---|---|---|
| Labcorp Genetics |
RCV001208925 | SCV001380339 | uncertain significance | Retinoblastoma | 2019-09-13 | criteria provided, single submitter | clinical testing | This sequence change replaces threonine with alanine at codon 821 of the RB1 protein (p.Thr821Ala). The threonine residue is moderately conserved and there is a small physicochemical difference between threonine and alanine. 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: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals with RB1-related conditions. This variant is present in population databases (rs761015353, ExAC 0.02%). |
| Ambry Genetics | RCV004033749 | SCV005034594 | likely benign | Hereditary cancer-predisposing syndrome | 2023-10-21 | criteria provided, single submitter | clinical testing | This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. |