ClinVar Miner

Submissions for variant NM_006949.4(STXBP2):c.1621G>T (p.Gly541Cys)

dbSNP: rs61736587
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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV001244298 SCV001417507 uncertain significance Familial hemophagocytic lymphohistiocytosis 5 2022-07-13 criteria provided, single submitter clinical testing This sequence change replaces glycine, which is neutral and non-polar, with cysteine, which is neutral and slightly polar, at codon 541 of the STXBP2 protein (p.Gly541Cys). This variant is present in population databases (no rsID available, gnomAD 0.0009%). This variant has not been reported in the literature in individuals affected with STXBP2-related conditions. ClinVar contains an entry for this variant (Variation ID: 969042). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). This variant disrupts the p.Gly541 amino acid residue in STXBP2. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 20558610, 20798128, 20823128, 23687090, 24194549). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. 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.

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