Fetal anomalies
Gene: POLG2The rating of this gene has been updated following NHS Genomic Medicine Service approval.Created: 3 Mar 2022, 11:19 a.m. | Last Modified: 3 Mar 2022, 11:19 a.m.
Panel Version: 1.836
Comment on list classification: New gene added by Rhiannon Mellis (GOSH). Following curation and clinical review it has been agreed that the associated phenotype is fetally-relevant and therefore this gene should be promoted to Green at the next GMS panel update (added 'for-review' tag)Created: 1 Feb 2021, 3:56 p.m. | Last Modified: 1 Feb 2021, 3:56 p.m.
Panel Version: 1.496
This gene and phenotype were reviewed during meetings at Great Ormond Street hospital in October 2020. This gene has a Green evidence rating on at least one other related PanelApp panel. Clinical review and curation was performed by Lyn Chitty, Rhiannon Mellis, and Richard Scott. Outcome of review: Confirmed that phenotype is fetally-relevant: add to the Fetal anomalies panel as a Green gene.
Green on related panel(s): Neuromuscular disorders
Sources: Expert listCreated: 28 Jan 2021, 4:08 p.m.
Mode of inheritance
BOTH monoallelic and biallelic (but BIALLELIC mutations cause a more SEVERE disease form), autosomal or pseudoautosomal
Phenotypes
Mitochondrial DNA depletion syndrome 16 (hepatic type); Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 4
Phenotypes for gene: POLG2 were changed from Mitochondrial DNA depletion syndrome 16 (hepatic type), OMIM:618528; Mitochondrial DNA depletion syndrome 16 (hepatic type), MONDO:0032799; Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 4, OMIM:610131; Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 4, MONDO:0012415 to Mitochondrial DNA depletion syndrome syndrome 16 (hepatic type), OMIM:618528; Mitochondrial DNA depletion syndrome 16B (neuroophthalmic type), OMIM:619425; Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 4, OMIM:610131
Tag for-review was removed from gene: POLG2.
Source Expert Review Green was added to POLG2. Rating Changed from Amber List (moderate evidence) to Green List (high evidence)
Phenotypes for gene: POLG2 were changed from Mitochondrial DNA depletion syndrome 16 (hepatic type); Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 4 to Mitochondrial DNA depletion syndrome 16 (hepatic type), OMIM:618528; Mitochondrial DNA depletion syndrome 16 (hepatic type), MONDO:0032799; Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 4, OMIM:610131; Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 4, MONDO:0012415
Gene: polg2 has been classified as Amber List (Moderate Evidence).
Tag for-review tag was added to gene: POLG2.
gene: POLG2 was added gene: POLG2 was added to Fetal anomalies. Sources: Expert list Mode of inheritance for gene: POLG2 was set to BOTH monoallelic and biallelic (but BIALLELIC mutations cause a more SEVERE disease form), autosomal or pseudoautosomal Phenotypes for gene: POLG2 were set to Mitochondrial DNA depletion syndrome 16 (hepatic type); Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 4 Review for gene: POLG2 was set to GREEN