Total submissions: 2
| Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
|---|---|---|---|---|---|---|---|---|
| Ambry Genetics | RCV000575487 | SCV000667719 | uncertain significance | Hereditary cancer-predisposing syndrome | 2017-03-22 | criteria provided, single submitter | clinical testing | The p.S1400L variant (also known as c.4199C>T), located in coding exon 15 of the APC gene, results from a C to T substitution at nucleotide position 4199. The serine at codon 1400 is replaced by leucine, an amino acid with dissimilar properties. This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. |
| Invitae | RCV003764745 | SCV004633787 | uncertain significance | Familial adenomatous polyposis 1 | 2024-01-17 | criteria provided, single submitter | clinical testing | This sequence change replaces serine, which is neutral and polar, with leucine, which is neutral and non-polar, at codon 1400 of the APC protein (p.Ser1400Leu). This variant is present in population databases (rs267600319, gnomAD 0.003%). This variant has not been reported in the literature in individuals affected with APC-related conditions. ClinVar contains an entry for this variant (Variation ID: 75618). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt APC protein function with a negative predictive value of 95%. 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. |