Total submissions: 2
| Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
|---|---|---|---|---|---|---|---|---|
| Ambry Genetics | RCV004030297 | SCV001170441 | uncertain significance | not specified | 2023-11-08 | criteria provided, single submitter | clinical testing | The p.R398C variant (also known as c.1192C>T), located in coding exon 6 of the GALNT12 gene, results from a C to T substitution at nucleotide position 1192. The arginine at codon 398 is replaced by cysteine, an amino acid with highly dissimilar 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. |
| Labcorp Genetics |
RCV002549315 | SCV003289243 | uncertain significance | not provided | 2022-12-05 | criteria provided, single submitter | clinical testing | This variant is present in population databases (rs747755624, gnomAD 0.03%). 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. 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 expected to disrupt GALNT12 protein function. ClinVar contains an entry for this variant (Variation ID: 818566). This variant has not been reported in the literature in individuals affected with GALNT12-related conditions. This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 398 of the GALNT12 protein (p.Arg398Cys). |