ClinVar Miner

Submissions for variant NM_003000.3(SDHB):c.625C>T (p.Pro209Ser)

dbSNP: rs2101516279
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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 RCV001951977 SCV002189067 uncertain significance Gastrointestinal stromal tumor; Paragangliomas 4; Pheochromocytoma 2021-09-02 criteria provided, single submitter clinical testing This sequence change replaces proline with serine at codon 209 of the SDHB protein (p.Pro209Ser). The proline residue is highly conserved and there is a moderate physicochemical difference between proline and serine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals affected with SDHB-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 expected to disrupt SDHB 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.
Ambry Genetics RCV004043606 SCV003672528 uncertain significance Hereditary cancer-predisposing syndrome 2022-12-28 criteria provided, single submitter clinical testing The c.625C>T (p.P209S) alteration is located in exon 6 (coding exon 6) of the SDHB gene. This alteration results from a C to T substitution at nucleotide position 625, causing the proline (P) at amino acid position 209 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear.

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