ClinVar Miner

Submissions for variant NM_000138.5(FBN1):c.4036_4037insACATTTGAAGCTTCCTGCTGTATTGGTACATACAGCAGGAAGCT (p.Phe1346delinsTyrIleTer)

dbSNP: rs1597554086
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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV001008348 SCV001168116 likely pathogenic not provided 2018-09-07 criteria provided, single submitter clinical testing Although the c.4036_4037ins44 pathogenic variant in the FBN1 gene has not been reported to our knowledge, this variant causes a shift in reading frame starting at codon phenylalanine 1346, changing it to a tyrosine, and creating a premature stop codon at position 3 of the new reading frame, denoted p.Phe1346TyrfsX3. This pathogenic variant is expected to result in either an abnormal, truncated protein product or loss of protein from this allele through nonsense-mediated mRNA decay. Other frameshift variants in the FBN1 gene have been reported in Human Gene Mutation Database in association with Marfan syndrome (Stenson et al., 2014), indicating that loss of function is a mechanism of disease for this gene. Furthermore, the c.4036_4037ins44 variant has not been observed in large population cohorts (Lek et al., 2016). In summary, c.4036_4037ins44 in the FBN1 gene is interpreted as a pathogenic variant.

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