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Genetic Epilepsy v0.2669 POLG Zornitza Stark Marked gene: POLG as ready
Genetic Epilepsy v0.2669 POLG Zornitza Stark Gene: polg has been classified as Green List (High Evidence).
Genetic Epilepsy v0.2669 POLG Zornitza Stark Phenotypes for gene: POLG were changed from to Mitochondrial DNA depletion syndrome 4A (Alpers type), MIM# 203700; Mitochondrial DNA depletion syndrome 4B (MNGIE type), MIM# 613662
Genetic Epilepsy v0.2668 POLG Zornitza Stark Publications for gene: POLG were set to
Genetic Epilepsy v0.2667 POLG Zornitza Stark Mode of inheritance for gene: POLG was changed from Unknown to BIALLELIC, autosomal or pseudoautosomal
Genetic Epilepsy v0.2666 POLG Zornitza Stark edited their review of gene: POLG: Added comment: Seizures are a feature of the more severe, recessive disorders associated with this gene.; Changed phenotypes: Mitochondrial DNA depletion syndrome 4A (Alpers type), MIM# 203700, Mitochondrial DNA depletion syndrome 4B (MNGIE type), MIM# 613662; Changed mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Genetic Epilepsy v0.2149 POLG2 Zornitza Stark Marked gene: POLG2 as ready
Genetic Epilepsy v0.2149 POLG2 Zornitza Stark Gene: polg2 has been classified as Amber List (Moderate Evidence).
Genetic Epilepsy v0.2149 POLG2 Zornitza Stark Classified gene: POLG2 as Amber List (moderate evidence)
Genetic Epilepsy v0.2149 POLG2 Zornitza Stark Gene: polg2 has been classified as Amber List (Moderate Evidence).
Genetic Epilepsy v0.2148 POLG2 Zornitza Stark reviewed gene: POLG2: Rating: AMBER; Mode of pathogenicity: None; Publications: ; Phenotypes: Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 4 MIM#610131; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Genetic Epilepsy v0.2146 POLG2 Chris Ciotta gene: POLG2 was added
gene: POLG2 was added to Genetic Epilepsy. Sources: Literature
Mode of inheritance for gene: POLG2 was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: POLG2 were set to PMID: 21555342
Phenotypes for gene: POLG2 were set to Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 4 MIM#610131
Review for gene: POLG2 was set to AMBER
Added comment: PMID:21555342 reports 4/11 unrelated individuals with mitochondrial disease as presenting with seizures and heterozygous variants in POLG2, 3/4 of these individuals had missense variants. Of these variants, 2 have been reported in Clinvar as benign and have high homozygote counts in gnomAD V4. The p.P205R variant was seen in an individual with seizures and is absent from gnomAD V4 and has been reported as pathogenic once in ClinVar for MIM#610131.

The last individual with seizures had a high impact variant (p.L475DfsX2) with 3 heterozygotes in the population (V4) which has been classified as pathogenic in ClinVar.

Overall, 2/11 unrelated individuals with plausible pathogenic variants presenting with seizures.
Sources: Literature
Genetic Epilepsy v0.0 POLG Zornitza Stark gene: POLG was added
gene: POLG was added to Genetic Epilepsy_AustralianGenomics_VCGS. Sources: Australian Genomics Health Alliance Epilepsy Flagship,Expert Review Green,Victorian Clinical Genetics Services
Mode of inheritance for gene: POLG was set to Unknown