ClinVar Miner

Submissions for variant NM_000057.4(BLM):c.2409G>A (p.Trp803Ter)

dbSNP: rs1896235438
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV001059204 SCV001223821 pathogenic Bloom syndrome 2019-04-04 criteria provided, single submitter clinical testing This sequence change creates a premature translational stop signal (p.Trp803*) in the BLM gene. It is expected to result in an absent or disrupted protein product. For these reasons, this variant has been classified as Pathogenic. Loss-of-function variants in BLM are known to be pathogenic (PMID: 17407155). This variant has not been reported in the literature in individuals with BLM-related conditions. This variant is not present in population databases (ExAC no frequency).
Ambry Genetics RCV002451246 SCV002738590 pathogenic Hereditary cancer-predisposing syndrome 2021-10-28 criteria provided, single submitter clinical testing The p.W803* pathogenic mutation (also known as c.2409G>A), located in coding exon 11 of the BLM gene, results from a G to A substitution at nucleotide position 2409. This changes the amino acid from a tryptophan to a stop codon within coding exon 11. This variant is considered to be rare based on population cohorts in the Genome Aggregation Database (gnomAD). This alteration is expected to result in loss of function by premature protein truncation or nonsense-mediated mRNA decay. As such, this alteration is interpreted as a disease-causing mutation.

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