ClinVar Miner

Submissions for variant NM_170707.4(LMNA):c.364A>G (p.Lys122Glu)

gnomAD frequency: 0.00002  dbSNP: rs1222398892
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV001755041 SCV001995861 uncertain significance not provided 2020-02-07 criteria provided, single submitter clinical testing Not observed in large population cohorts (Lek et al., 2016); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge
Labcorp Genetics (formerly Invitae), Labcorp RCV001885033 SCV002190119 uncertain significance Charcot-Marie-Tooth disease type 2 2024-02-24 criteria provided, single submitter clinical testing This sequence change replaces lysine, which is basic and polar, with glutamic acid, which is acidic and polar, at codon 122 of the LMNA protein (p.Lys122Glu). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with LMNA-related conditions. ClinVar contains an entry for this variant (Variation ID: 1312287). 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 LMNA protein function with a positive predictive value of 95%. 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 RCV003533022 SCV004359093 uncertain significance Cardiomyopathy 2022-05-16 criteria provided, single submitter clinical testing This missense variant replaces lysine with glutamic acid at codon 122 of the lamin A/C proteins. Computational prediction suggests that this variant may have deleterious impact on protein structure and function (internally defined REVEL score threshold >= 0.7, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not 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). The 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.

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