ClinVar Miner

Submissions for variant NM_003000.3(SDHB):c.263C>T (p.Thr88Ile)

dbSNP: rs915794675
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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV001315331 SCV001505900 uncertain significance Gastrointestinal stromal tumor; Paragangliomas 4; Pheochromocytoma 2020-02-29 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. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain. This variant has not been reported in the literature in individuals with SDHB-related conditions. This variant is not present in population databases (ExAC no frequency). This sequence change replaces threonine with isoleucine at codon 88 of the SDHB protein (p.Thr88Ile). The threonine residue is highly conserved and there is a moderate physicochemical difference between threonine and isoleucine.

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