ClinVar Miner

Submissions for variant NM_000138.5(FBN1):c.3473A>G (p.Glu1158Gly)

dbSNP: rs1597562926
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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 RCV000802337 SCV000942163 pathogenic Marfan syndrome; Familial thoracic aortic aneurysm and aortic dissection 2023-11-11 criteria provided, single submitter clinical testing This sequence change replaces glutamic acid, which is acidic and polar, with glycine, which is neutral and non-polar, at codon 1158 of the FBN1 protein (p.Glu1158Gly). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with Marfan syndrome (PMID: 17657824; Invitae). ClinVar contains an entry for this variant (Variation ID: 647760). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt FBN1 protein function with a positive predictive value of 95%. This variant disrupts the p.Glu1158 amino acid residue in FBN1. Other variant(s) that disrupt this residue have been observed in individuals with FBN1-related conditions (PMID: 27906200), which suggests that this may be a clinically significant amino acid residue. For these reasons, this variant has been classified as Pathogenic.

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