Total submissions: 3
Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
---|---|---|---|---|---|---|---|---|
Genetic Services Laboratory, |
RCV000193549 | SCV000248284 | uncertain significance | not specified | 2014-09-10 | criteria provided, single submitter | clinical testing | |
Gene |
RCV000767067 | SCV000617000 | uncertain significance | not provided | 2018-04-09 | criteria provided, single submitter | clinical testing | A variant of uncertain significance has been identified in the NRXN1 gene. The I1246V variant has not been published as a pathogenic variant, nor has it been reported as a benign variant to our knowledge. It was not observed in approximately 6,500 individuals of European and African American ancestry in an external variant database, indicating it is not a common benign variant in these populations. The I1246V variant is a conservative amino acid substitution, which is not likely to impact secondary protein structure as these residues share similar properties. This substitution occurs at a position where amino acids with similar properties to Isoleucine are tolerated across species. In silico analysis predicts this variant likely does not alter the protein structure/function. Based on the currently available information, it is unclear whether this variant is a pathogenic variant or a rare benign variant. |
Invitae | RCV002517107 | SCV003501265 | uncertain significance | Pitt-Hopkins-like syndrome 2 | 2022-01-25 | 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 (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. ClinVar contains an entry for this variant (Variation ID: 211691). This variant has not been reported in the literature in individuals affected with NRXN1-related conditions. This variant is present in population databases (rs751778015, gnomAD 0.004%). This sequence change replaces isoleucine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 1246 of the NRXN1 protein (p.Ile1246Val). |