ClinVar Miner

Submissions for variant NM_016203.4(PRKAG2):c.361A>G (p.Met121Val)

gnomAD frequency: 0.00003  dbSNP: rs760511236
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV000231871 SCV000290209 uncertain significance Lethal congenital glycogen storage disease of heart 2022-07-01 criteria provided, single submitter clinical testing This sequence change replaces methionine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 121 of the PRKAG2 protein (p.Met121Val). This variant is present in population databases (rs760511236, gnomAD 0.002%). This variant has not been reported in the literature in individuals affected with PRKAG2-related conditions. ClinVar contains an entry for this variant (Variation ID: 241095). 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 not expected to disrupt PRKAG2 protein function. 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 RCV003532067 SCV004359765 uncertain significance Cardiomyopathy 2023-11-08 criteria provided, single submitter clinical testing This missense variant replaces methionine with valine at codon 121 of the PRKAG2 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with PRKAG2-related disorders in the literature. This variant has been identified in 2/282652 chromosomes 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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