Total submissions: 2
| Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
|---|---|---|---|---|---|---|---|---|
| Illumina Laboratory Services, |
RCV001143771 | SCV001304322 | uncertain significance | Leber congenital amaurosis 16 | 2017-04-27 | criteria provided, single submitter | clinical testing | This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. However, the evidence from the literature, in combination with allele frequency data from public databases where available, was not sufficient to rule this variant in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. |
| Invitae | RCV001304511 | SCV001493796 | uncertain significance | not provided | 2024-01-13 | criteria provided, single submitter | clinical testing | This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 162 of the KCNJ13 protein (p.Arg162Gln). This variant is present in population databases (rs757304681, gnomAD 0.1%). This missense change has been observed in individual(s) with clinical features of inherited retinal dystrophy (PMID: 21763485, 29068479, 32507954). ClinVar contains an entry for this variant (Variation ID: 899321). 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 KCNJ13 protein function with a negative predictive value of 80%. This variant disrupts the p.Arg162 amino acid residue in KCNJ13. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 18179896, 23255580, 23977131). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. 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. |