Total submissions: 2
| Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
|---|---|---|---|---|---|---|---|---|
| Women's Health and Genetics/Laboratory Corporation of America, |
RCV000029707 | SCV000052360 | likely pathogenic | Marfan syndrome | 2011-08-18 | criteria provided, single submitter | curation | Converted during submission to Likely pathogenic. |
| Labcorp Genetics |
RCV005222706 | SCV005863562 | pathogenic | Marfan syndrome; Familial thoracic aortic aneurysm and aortic dissection | 2024-05-02 | criteria provided, single submitter | clinical testing | This sequence change replaces cysteine, which is neutral and slightly polar, with serine, which is neutral and polar, at codon 790 of the FBN1 protein (p.Cys790Ser). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with clinical features of Marfan syndrome (PMID: 22876116). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 36047). 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 affects a cysteine residue in the EGF-like, TGFBP or hybrid motif domains of FBN1. Cysteine residues are believed to be involved in intramolecular disulfide bridges and have been shown to be important for FBN1 protein structure (PMID: 16905551, 19349279). In addition, missense substitutions affecting cysteine residues within these domains are significantly overrepresented among patients with Marfan syndrome (PMID: 16571647, 17701892). For these reasons, this variant has been classified as Pathogenic. |