ClinVar Miner

Submissions for variant NM_003000.3(SDHB):c.584G>C (p.Ser195Thr)

gnomAD frequency: 0.00001  dbSNP: rs1570945866
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV000811313 SCV000951573 uncertain significance Gastrointestinal stromal tumor; Paragangliomas 4; Pheochromocytoma 2023-05-20 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. 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 expected to disrupt SDHB protein function. ClinVar contains an entry for this variant (Variation ID: 655187). This variant has not been reported in the literature in individuals affected with SDHB-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces serine, which is neutral and polar, with threonine, which is neutral and polar, at codon 195 of the SDHB protein (p.Ser195Thr).
Ambry Genetics RCV003166302 SCV003911623 uncertain significance Hereditary cancer-predisposing syndrome 2023-03-03 criteria provided, single submitter clinical testing The p.S195T variant (also known as c.584G>C), located in coding exon 6 of the SDHB gene, results from a G to C substitution at nucleotide position 584. The serine at codon 195 is replaced by threonine, an amino acid with similar properties. This amino acid position is conserved. 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.

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