ClinVar Miner

Submissions for variant NM_016203.4(PRKAG2):c.1324G>A (p.Asp442Asn)

gnomAD frequency: 0.00001  dbSNP: rs199863116
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Total submissions: 6
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Illumina Laboratory Services, Illumina RCV001165045 SCV001327212 uncertain significance Hypertrophic cardiomyopathy 6 2018-01-13 criteria provided, single submitter clinical testing This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease.
Illumina Laboratory Services, Illumina RCV001165046 SCV001327213 uncertain significance Wolff-Parkinson-White pattern 2018-01-13 criteria provided, single submitter clinical testing This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease.
Labcorp Genetics (formerly Invitae), Labcorp RCV001323434 SCV001514347 uncertain significance Lethal congenital glycogen storage disease of heart 2023-04-11 criteria provided, single submitter clinical testing 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. 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. ClinVar contains an entry for this variant (Variation ID: 912070). This variant has not been reported in the literature in individuals affected with PRKAG2-related conditions. This variant is present in population databases (rs199863116, gnomAD 0.002%). This sequence change replaces aspartic acid, which is acidic and polar, with asparagine, which is neutral and polar, at codon 442 of the PRKAG2 protein (p.Asp442Asn).
All of Us Research Program, National Institutes of Health RCV004000266 SCV004816009 uncertain significance Hypertrophic cardiomyopathy 2024-01-11 criteria provided, single submitter clinical testing This missense variant replaces aspartic acid with asparagine at codon 442 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 2/282872 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.
Ambry Genetics RCV004032876 SCV005026393 uncertain significance Cardiovascular phenotype 2022-12-31 criteria provided, single submitter clinical testing The p.D442N variant (also known as c.1324G>A), located in coding exon 12 of the PRKAG2 gene, results from a G to A substitution at nucleotide position 1324. The aspartic acid at codon 442 is replaced by asparagine, 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.
Women's Health and Genetics/Laboratory Corporation of America, LabCorp RCV004526087 SCV005040457 uncertain significance not specified 2024-03-03 criteria provided, single submitter clinical testing

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