Total submissions: 3
Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
---|---|---|---|---|---|---|---|---|
Invitae | RCV000232272 | SCV000288137 | uncertain significance | Mitochondrial complex II deficiency, nuclear type 1; Paragangliomas 5 | 2024-01-18 | criteria provided, single submitter | clinical testing | This sequence change replaces valine, which is neutral and non-polar, with isoleucine, which is neutral and non-polar, at codon 151 of the SDHA protein (p.Val151Ile). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with SDHA-related conditions. ClinVar contains an entry for this variant (Variation ID: 239669). 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 SDHA 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. |
Ambry Genetics | RCV002338729 | SCV002635177 | uncertain significance | Hereditary cancer-predisposing syndrome | 2022-01-13 | criteria provided, single submitter | clinical testing | The p.V151I variant (also known as c.451G>A), located in coding exon 4 of the SDHA gene, results from a G to A substitution at nucleotide position 451. The valine at codon 151 is replaced by isoleucine, an amino acid with highly similar properties. This amino acid position is conserved. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. |
Prevention |
RCV003417819 | SCV004108599 | uncertain significance | SDHA-related condition | 2023-05-17 | criteria provided, single submitter | clinical testing | The SDHA c.451G>A variant is predicted to result in the amino acid substitution p.Val151Ile. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.0063% of alleles in individuals of African descent in gnomAD (http://gnomad.broadinstitute.org/variant/5-225672-G-A). At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. |