Genes in panel

Neurodegenerative disorders - adult onset

Gene: TWNK

Red List (low evidence)

TWNK (twinkle mtDNA helicase)
EnsemblGeneIds (GRCh38): ENSG00000107815
EnsemblGeneIds (GRCh37): ENSG00000107815
OMIM: 606075, Gene2Phenotype
TWNK is in 17 panels

4 reviews

Tracy Lester (Genetics laboratory, Oxford UK)

Red List (low evidence)

Mitochondrial DNA depletion syndrome-7 is an autosomal recessive severe neurodegenerative disorder - onset in childhood. Red. Perrault syndrome5 - not neurodegenerative? Onset in teens - red. PEOA3 - AD adult onset of weakness of the external eye muscles and exercise intolerance - not sure it is neurodegenerative. Red
Created: 2 Sep 2019, 4:06 p.m. | Last Modified: 2 Sep 2019, 4:06 p.m.
Panel Version: 1.99

Mode of inheritance
BOTH monoallelic and biallelic, autosomal or pseudoautosomal

Phenotypes
Spinocerebellar Ataxia, Recessive; Ataxia Neuropathy Spectrum Disorders, Dominant; Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 3, 609286; Perrault syndrome 5, 616138; Mitochondrial DNA depletion syndrome 7 (hepatocerebral type), 271245

Nick Beauchamp (Sheffield Diagnostic Genetics Service)

Green List (high evidence)

Progressive external ophthalmoplegia which can progress to late on set dementia.
Created: 23 Jul 2019, 3:35 p.m. | Last Modified: 23 Jul 2019, 3:35 p.m.
Panel Version: 1.72

Mode of inheritance
BOTH monoallelic and biallelic, autosomal or pseudoautosomal

Publications

Louise Daugherty (Genomics England Curator)

Red List (low evidence)

As discussed with the GMS Neurology Specialist Test Group webex call 11th September 2019: The Specialist Test Group all agreed that there is only enough evidence to rate this gene Red
Created: 20 Sep 2019, 4:19 p.m. | Last Modified: 20 Sep 2019, 4:19 p.m.
Panel Version: 1.106
Review and rating from Tracy Lester (Oxford Medical Genetics Laboratories Oxford University Hospitals NHS Foundation Trust) on behalf of Wessex and West Midlands GLH for GMS Neurology specialist test group. All the green and amber, except for the genes with triplet repeats, were reviewed.
Created: 2 Sep 2019, 4:46 p.m. | Last Modified: 2 Sep 2019, 4:46 p.m.
Panel Version: 1.101
Review and rating submitted by Nick Beauchamp (Sheffield Diagnostic genetics Service), on behalf of Yorkshire and North East GLH for GMS Neurology specialist test group.
Created: 23 Jul 2019, 3:51 p.m. | Last Modified: 23 Jul 2019, 3:51 p.m.
Panel Version: 1.74
Review and rating submitted byJames Polke (North Bristol NHS Trust), unless specified in the review comment, on behalf of London North GLH for GMS Neurology specialist test group.
Created: 23 Apr 2019, 5:35 p.m.

James Polke (Neurogenetics Laboratory, Institute of Neurology, London)

Red List (low evidence)

History Filter Activity

20 Sep 2019, Gel status: 1

Added New Source, Status Update

Louise Daugherty (Genomics England Curator)

Source Expert Review Red was added to TWNK. Rating Changed from Green List (high evidence) to Red List (low evidence)

2 Sep 2019, Gel status: 3

Added New Source

Louise Daugherty (Genomics England Curator)

Source Wessex and West Midlands GLH was added to TWNK.

23 Jul 2019, Gel status: 3

Set publications

Louise Daugherty (Genomics England Curator)

Publications for gene TWNK were changed from to 19513767

23 Jul 2019, Gel status: 3

Added New Source

Louise Daugherty (Genomics England Curator)

Source Yorkshire and North East GLH was added to TWNK.

23 Apr 2019, Gel status: 4

Added New Source

Louise Daugherty (Genomics England Curator)

Source NHS GMS was added to TWNK.

23 Apr 2019, Gel status: 4

Added New Source

Louise Daugherty (Genomics England Curator)

Source London North GLH was added to TWNK.

25 Jan 2019, Gel status: 4

Panel promoted to version 1.0

Louise Daugherty (Genomics England Curator)

Louise Daugherty: Comment on phenotypes: amended

9 Jan 2019, Gel status: 4

Set Phenotypes

Louise Daugherty (Genomics England Curator)

Phenotypes for gene: TWNK were changed from Spinocerebellar Ataxia, Recessive; Ataxia Neuropathy Spectrum Disorders (Dominant) to Spinocerebellar Ataxia, Recessive; Ataxia Neuropathy Spectrum Disorders, Dominant; Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 3, 609286; Perrault syndrome 5, 616138; Mitochondrial DNA depletion syndrome 7 (hepatocerebral type), 271245

18 Dec 2018, Gel status: 4

Created, Added New Source, Set mode of inheritance, Set Phenotypes

Rebecca Foulger (Genomics England curator)

gene: TWNK was added gene: TWNK was added to Neurodegenerative disorders - adult onset. Sources: Expert Review Green Mode of inheritance for gene: TWNK was set to BOTH monoallelic and biallelic, autosomal or pseudoautosomal Phenotypes for gene: TWNK were set to Spinocerebellar Ataxia, Recessive; Ataxia Neuropathy Spectrum Disorders (Dominant)