ClinVar Miner

Submissions for variant NM_001211.6(BUB1B):c.2693A>G (p.Tyr898Cys)

gnomAD frequency: 0.00001  dbSNP: rs757927200
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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 RCV002239288 SCV001202454 uncertain significance Mosaic variegated aneuploidy syndrome 1 2021-07-06 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 output the following: SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The cysteine amino acid residue is found in multiple mammalian species, suggesting that this missense change does not adversely affect protein function. 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 BUB1B-related conditions. This variant is present in population databases (rs757927200, ExAC 0.009%). This sequence change replaces tyrosine with cysteine at codon 898 of the BUB1B protein (p.Tyr898Cys). The tyrosine residue is weakly conserved and there is a large physicochemical difference between tyrosine and cysteine.
Ambry Genetics RCV002434444 SCV002745333 uncertain significance Inborn genetic diseases 2024-05-02 criteria provided, single submitter clinical testing The p.Y898C variant (also known as c.2693A>G), located in coding exon 21 of the BUB1B gene, results from an A to G substitution at nucleotide position 2693. The tyrosine at codon 898 is replaced by cysteine, an amino acid with highly dissimilar properties. This amino acid position is conserved. 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.

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