Total submissions: 2
Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
---|---|---|---|---|---|---|---|---|
Invitae | RCV000631218 | SCV000752232 | uncertain significance | Cowden syndrome | 2017-11-28 | 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 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 PIK3CA-related disease. This variant is not present in population databases (ExAC no frequency). This sequence change replaces serine with isoleucine at codon 332 of the PIK3CA protein (p.Ser332Ile). The serine residue is highly conserved and there is a large physicochemical difference between serine and isoleucine. |
Ambry Genetics | RCV003162796 | SCV003855771 | uncertain significance | Inborn genetic diseases | 2023-02-04 | criteria provided, single submitter | clinical testing | The p.S332I variant (also known as c.995G>T), located in coding exon 4 of the PIK3CA gene, results from a G to T substitution at nucleotide position 995. The serine at codon 332 is replaced by isoleucine, 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. |