Total submissions: 3
| Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
|---|---|---|---|---|---|---|---|---|
| Labcorp Genetics |
RCV001906319 | SCV002174824 | uncertain significance | not provided | 2021-09-05 | criteria provided, single submitter | clinical testing | This sequence change replaces leucine with valine at codon 2187 of the NOTCH3 protein (p.Leu2187Val). The leucine residue is highly conserved and there is a small physicochemical difference between leucine and valine. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate insufficient coverage at this position in the ExAC database. This variant has not been reported in the literature in individuals affected with NOTCH3-related conditions. 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 NOTCH3 protein function. 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. |
| Athena Diagnostics | RCV001906319 | SCV005620652 | uncertain significance | not provided | 2024-09-17 | criteria provided, single submitter | clinical testing | Available data are insufficient to determine the clinical significance of the variant at this time. This variant has not been reported in large, multi-ethnic general populations. (http://gnomad.broadinstitute.org) This variant has been seen where an alternate explanation for disease was also identified, suggesting this variant may not cause disease. Polyphen and MutationTaster predict this amino acid change may be benign. Greater than 90% of NOTCH3 pathogenic variants associated with CADASIL involve the gain or loss of a cysteine residue within the epidermal growth factor (EGF)-like repeat domain (PMID: 32457593, 20301673). |
| Prevention |
RCV004738429 | SCV005357098 | uncertain significance | NOTCH3-related disorder | 2024-08-18 | no assertion criteria provided | clinical testing | The NOTCH3 c.6559C>G variant is predicted to result in the amino acid substitution p.Leu2187Val. To our knowledge, this variant has not been reported in the literature or in a large population database, indicating this variant is rare. At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. |