Total submissions: 2
| Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
|---|---|---|---|---|---|---|---|---|
| Invitae | RCV001202743 | SCV001373869 | uncertain significance | Spinocerebellar ataxia type 19/22 | 2019-09-16 | 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 KCND3-related conditions. This variant is present in population databases (rs774711788, ExAC 0.003%). This sequence change replaces alanine with threonine at codon 654 of the KCND3 protein (p.Ala654Thr). The alanine residue is highly conserved and there is a small physicochemical difference between alanine and threonine. |
| Ambry Genetics | RCV002418669 | SCV002718872 | uncertain significance | Cardiovascular phenotype | 2023-12-22 | criteria provided, single submitter | clinical testing | The p.A654T variant (also known as c.1960G>A), located in coding exon 7 of the KCND3 gene, results from a G to A substitution at nucleotide position 1960. The alanine at codon 654 is replaced by threonine, an amino acid with similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. |