ClinVar Miner

Submissions for variant NM_004168.4(SDHA):c.826G>A (p.Gly276Ser)

gnomAD frequency: 0.00002  dbSNP: rs751008647
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Total submissions: 4
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV000472703 SCV000553869 uncertain significance Mitochondrial complex II deficiency, nuclear type 1; Paragangliomas 5 2024-12-17 criteria provided, single submitter clinical testing This sequence change replaces glycine, which is neutral and non-polar, with serine, which is neutral and polar, at codon 276 of the SDHA protein (p.Gly276Ser). This variant is present in population databases (rs751008647, gnomAD 0.009%). 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: 412356). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed for this missense variant. However, the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on SDHA 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.
Counsyl RCV000663336 SCV000786613 uncertain significance Paragangliomas 5 2018-06-07 criteria provided, single submitter clinical testing
Ambry Genetics RCV002429556 SCV002680151 uncertain significance Hereditary cancer-predisposing syndrome 2024-04-13 criteria provided, single submitter clinical testing The p.G276S variant (also known as c.826G>A), located in coding exon 7 of the SDHA gene, results from a G to A substitution at nucleotide position 826. The glycine at codon 276 is replaced by serine, an amino acid with similar 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.
Myriad Genetics, Inc. RCV000663336 SCV004045429 uncertain significance Paragangliomas 5 2023-04-21 criteria provided, single submitter clinical testing This variant is classified as a variant of uncertain significance as there is insufficient evidence to determine its impact on protein function and/or cancer risk.

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