ClinVar Miner

Submissions for variant NM_004168.4(SDHA):c.1951G>A (p.Glu651Lys)

gnomAD frequency: 0.00004  dbSNP: rs375396913
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Total submissions: 4
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV000204436 SCV000261611 uncertain significance Mitochondrial complex II deficiency, nuclear type 1; Paragangliomas 5 2024-01-30 criteria provided, single submitter clinical testing This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 651 of the SDHA protein (p.Glu651Lys). This variant is present in population databases (rs375396913, gnomAD 0.008%). 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: 220782). 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 RCV001013731 SCV001174354 uncertain significance Hereditary cancer-predisposing syndrome 2023-08-23 criteria provided, single submitter clinical testing The p.E651K variant (also known as c.1951G>A), located in coding exon 15 of the SDHA gene, results from a G to A substitution at nucleotide position 1951. The glutamic acid at codon 651 is replaced by lysine, 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 tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear.
GeneDx RCV003441788 SCV004169643 uncertain significance not provided 2023-09-29 criteria provided, single submitter clinical testing Not observed at a significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter protein structure/function; Observed in an individual with breast and/or ovarian cancer and in a pediatric patient with myocarditis (Maxwell et al., 2016; Seidel et al., 2022); This variant is associated with the following publications: (PMID: 27153395, 35877578)
Baylor Genetics RCV003474987 SCV004200587 uncertain significance Dilated cardiomyopathy 1GG 2023-08-23 criteria provided, single submitter clinical testing

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