ClinVar Miner

Submissions for variant NM_016203.4(PRKAG2):c.1655A>G (p.Gln552Arg)

gnomAD frequency: 0.00001  dbSNP: rs1335765564
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV000704777 SCV000833741 uncertain significance Lethal congenital glycogen storage disease of heart 2023-10-18 criteria provided, single submitter clinical testing This sequence change replaces glutamine, which is neutral and polar, with arginine, which is basic and polar, at codon 552 of the PRKAG2 protein (p.Gln552Arg). This variant is present in population databases (no rsID available, gnomAD 0.0009%). 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: 581064). 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) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on 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.
GeneDx RCV001555555 SCV001776995 uncertain significance not provided 2019-06-19 criteria provided, single submitter clinical testing Has not been previously published as pathogenic or benign to our knowledge; Not observed at a significant frequency in large population cohorts (Lek et al., 2016); Reported in ClinVar as a variant of uncertain significance (ClinVar Variant ID# 581064; Landrum et al., 2016); In silico analysis, which includes protein predictors and evolutionary conservation, supports that this variant does not alter protein structure/function
Ambry Genetics RCV004649289 SCV005149147 uncertain significance Cardiovascular phenotype 2024-03-24 criteria provided, single submitter clinical testing The p.Q552R variant (also known as c.1655A>G), located in coding exon 15 of the PRKAG2 gene, results from an A to G substitution at nucleotide position 1655. The glutamine at codon 552 is replaced by arginine, an amino acid with highly similar properties. This amino acid position is conserved. In addition, this alteration is predicted to be deleterious by in silico analysis. Based on the available evidence, the clinical significance of this alteration remains unclear.

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