ClinVar Miner

Submissions for variant NM_001458.5(FLNC):c.5248C>A (p.Leu1750Met)

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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Ambry Genetics RCV003358184 SCV004056741 uncertain significance Cardiovascular phenotype 2023-08-29 criteria provided, single submitter clinical testing The p.L1750M variant (also known as c.5248C>A), located in coding exon 31 of the FLNC gene, results from a C to A substitution at nucleotide position 5248. The leucine at codon 1750 is replaced by methionine, an amino acid with highly similar properties. This amino acid position is conserved. 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.
Invitae RCV003777449 SCV004574849 uncertain significance Myofibrillar myopathy 5; Distal myopathy with posterior leg and anterior hand involvement; Hypertrophic cardiomyopathy 26; Dilated Cardiomyopathy, Dominant 2023-06-05 criteria provided, single submitter clinical testing This sequence change replaces leucine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 1750 of the FLNC protein (p.Leu1750Met). 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 missense changes on protein structure and function output the following: SIFT: "Not Available"; PolyPhen-2: "Benign"; Align-GVGD: "Not Available". The methionine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. This variant has not been reported in the literature in individuals affected with FLNC-related conditions. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database.

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