ClinVar Miner

Submissions for variant NM_000138.5(FBN1):c.1944T>A (p.Asp648Glu)

dbSNP: rs2141317175
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV001952699 SCV002210124 uncertain significance Marfan syndrome; Familial thoracic aortic aneurysm and aortic dissection 2021-06-16 criteria provided, single submitter clinical testing This sequence change replaces aspartic acid with glutamic acid at codon 648 of the FBN1 protein (p.Asp648Glu). The aspartic acid residue is highly conserved and there is a small physicochemical difference between aspartic acid and glutamic acid. This variant is not present in population databases (ExAC no frequency). 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 sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site, but this prediction has not been confirmed by published transcriptional studies. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals with FBN1-related conditions.
Greenwood Genetic Center Diagnostic Laboratories, Greenwood Genetic Center RCV003314026 SCV004013436 uncertain significance not provided 2023-04-27 criteria provided, single submitter clinical testing PM2
All of Us Research Program, National Institutes of Health RCV004804317 SCV005424895 uncertain significance Marfan syndrome 2024-03-05 criteria provided, single submitter clinical testing

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