ClinVar Miner

Submissions for variant NM_000057.4(BLM):c.229C>G (p.Leu77Val)

dbSNP: rs1555418283
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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 RCV000628647 SCV000749551 uncertain significance Bloom syndrome 2021-08-31 criteria provided, single submitter clinical testing This sequence change replaces leucine with valine at codon 77 of the BLM protein (p.Leu77Val). The leucine residue is weakly conserved and there is a small physicochemical difference between leucine and valine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals affected with BLM-related conditions. 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 tolerated. 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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