ClinVar Miner

Submissions for variant NM_000138.5(FBN1):c.5791G>A (p.Val1931Ile)

dbSNP: rs1555395768
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Total submissions: 4
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV000631995 SCV000753098 uncertain significance Marfan syndrome; Familial thoracic aortic aneurysm and aortic dissection 2025-01-07 criteria provided, single submitter clinical testing This sequence change replaces valine, which is neutral and non-polar, with isoleucine, which is neutral and non-polar, at codon 1931 of the FBN1 protein (p.Val1931Ile). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with FBN1-related conditions. ClinVar contains an entry for this variant (Variation ID: 527199). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be tolerated. 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.
Color Diagnostics, LLC DBA Color Health RCV001190262 SCV001357713 uncertain significance Familial thoracic aortic aneurysm and aortic dissection 2019-06-19 criteria provided, single submitter clinical testing This missense variant replaces valine with isoleucine at codon 1931 of the FBN1 protein. Computational prediction tools and conservation analyses are inconclusive regarding the impact of this variant on the protein function. Computational splicing tools suggest that this variant may not impact RNA splicing. To our knowledge, functional assays have not been performed for this variant nor has this variant been reported in individuals affected with cardiovascular disorders in the literature. This variant has not been identified in the general population by the Genome Aggregation Database (gnomAD). Available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance.
Ambry Genetics RCV001190262 SCV002652177 uncertain significance Familial thoracic aortic aneurysm and aortic dissection 2022-01-21 criteria provided, single submitter clinical testing The p.V1931I variant (also known as c.5791G>A), located in coding exon 47 of the FBN1 gene, results from a G to A substitution at nucleotide position 5791. The valine at codon 1931 is replaced by isoleucine, an amino acid with highly similar properties. This amino acid position is not well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear.
Fulgent Genetics, Fulgent Genetics RCV002483785 SCV002779100 uncertain significance Ectopia lentis 1, isolated, autosomal dominant; Marfan syndrome; MASS syndrome; Stiff skin syndrome; Weill-Marchesani syndrome 2, dominant; Acromicric dysplasia; Geleophysic dysplasia 2; Progeroid and marfanoid aspect-lipodystrophy syndrome 2021-09-14 criteria provided, single submitter clinical testing

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