ClinVar Miner

Submissions for variant NM_000057.4(BLM):c.2343_2344dup (p.Asn782fs)

dbSNP: rs1555420842
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Total submissions: 4
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV000467746 SCV000543351 pathogenic Bloom syndrome 2023-08-31 criteria provided, single submitter clinical testing For these reasons, this variant has been classified as Pathogenic. ClinVar contains an entry for this variant (Variation ID: 405291). This variant has not been reported in the literature in individuals affected with BLM-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change creates a premature translational stop signal (p.Asn782Argfs*34) in the BLM gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in BLM are known to be pathogenic (PMID: 17407155).
Counsyl RCV000467746 SCV000792094 likely pathogenic Bloom syndrome 2017-06-20 criteria provided, single submitter clinical testing
Fulgent Genetics, Fulgent Genetics RCV000467746 SCV002813884 likely pathogenic Bloom syndrome 2022-02-08 criteria provided, single submitter clinical testing
Ambry Genetics RCV003298468 SCV004001025 pathogenic Hereditary cancer-predisposing syndrome 2023-04-13 criteria provided, single submitter clinical testing The c.2343_2344dupGA pathogenic mutation, located in coding exon 10 of the BLM gene, results from a duplication of GA at nucleotide position 2343, causing a translational frameshift with a predicted alternate stop codon (p.N782Rfs*34). This alteration is expected to result in loss of function by premature protein truncation or nonsense-mediated mRNA decay. This variant is considered to be rare based on population cohorts in the Genome Aggregation Database (gnomAD). As such, this alteration is interpreted as a disease-causing mutation.

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