ClinVar Miner

Submissions for variant NM_002693.3(POLG):c.2028G>A (p.Ala676=)

gnomAD frequency: 0.00017  dbSNP: rs373550219
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Total submissions: 9
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV000127516 SCV000171093 benign not specified 2013-04-04 criteria provided, single submitter clinical testing This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease.
Eurofins Ntd Llc (ga) RCV000710184 SCV000332199 uncertain significance not provided 2017-08-01 criteria provided, single submitter clinical testing
Illumina Laboratory Services, Illumina RCV000263177 SCV000394284 uncertain significance POLG-Related Spectrum Disorders 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 RCV000457002 SCV000556236 likely benign Progressive sclerosing poliodystrophy 2025-01-14 criteria provided, single submitter clinical testing
Athena Diagnostics RCV000710184 SCV000614709 likely benign not provided 2019-06-30 criteria provided, single submitter clinical testing
Wong Mito Lab, Molecular and Human Genetics, Baylor College of Medicine RCV000457002 SCV000887075 benign Progressive sclerosing poliodystrophy 2018-10-01 criteria provided, single submitter clinical testing The NM_002693.2:c.2028G>A (NP_002684.1:p.Ala676=) [GRCH38: NC_000015.10:g.89324149C>T] variant in POLG gene is interpretated to be a Benign based on ACMG guidelines (PMID: 25741868). This variant meets the following evidence codes reported in the ACMG-guideline. BS1:The minor allele frequency of this allele is high for Mitochondrial DNA depletion syndrome 4A (Alpers type). BS2:Observation of the variant in controls is inconsistent with penetrance of Mitochondrial DNA depletion syndrome 4A (Alpers type). BP4:Computational evidence/predictors indicate no impact on the POLG structure, function, or protein-protein interaction. Based on the evidence criteria codes applied, the variant is suggested to be Benign.
CeGaT Center for Human Genetics Tuebingen RCV000710184 SCV001149567 likely benign not provided 2025-02-01 criteria provided, single submitter clinical testing POLG: BP4, BP7
Genome Diagnostics Laboratory, The Hospital for Sick Children RCV001847749 SCV002105561 uncertain significance Hereditary spastic paraplegia 2018-02-01 criteria provided, single submitter clinical testing
Ambry Genetics RCV002415616 SCV002718007 likely benign Inborn genetic diseases 2017-12-18 criteria provided, single submitter clinical testing This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity.

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