Genes in panel

Neurodegenerative disorders - adult onset

Gene: FXN

Red List (low evidence)

FXN (frataxin)
EnsemblGeneIds (GRCh38): ENSG00000165060
EnsemblGeneIds (GRCh37): ENSG00000165060
OMIM: 606829, Gene2Phenotype
FXN is in 18 panels

4 reviews

Tracy Lester (Genetics laboratory, Oxford UK)

Red List (low evidence)

Friedreich ataxia is an autosomal recessive neurodegenerative disorder characterized by progressive gait and limb ataxia with associated limb muscle weakness, absent lower limb reflexes, extensor plantar responses, dysarthria, and decreased vibratory sense and proprioception. Onset is usually in the first or second decade, before the end of puberty. The most common molecular abnormality is a GAA trinucleotide repeat expansion in intron 1 of the FXN gene: normal individuals have 5 to 30 GAA repeat expansions, whereas affected individuals have from 70 to more than 1,000 GAA triplets: not detected by WGS? Childhood onset, so 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
BIALLELIC, autosomal or pseudoautosomal

Phenotypes
Friedreichataxia,229300Friedreichataxiawithretainedreflexes,229300

Mode of pathogenicity
Other - please provide details in the comments

Nick Beauchamp (Sheffield Diagnostic Genetics Service)

Red List (low evidence)

Neurodegeneration not feature of disease.
Created: 23 Jul 2019, 3:35 p.m. | Last Modified: 23 Jul 2019, 3:35 p.m.
Panel Version: 1.72

Mode of inheritance
BIALLELIC, autosomal or pseudoautosomal

Phenotypes
Friedreichataxia,229300Friedreichataxiawithretainedreflexes, 229300

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 FXN. 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 FXN.

23 Jul 2019, Gel status: 3

Added New Source

Louise Daugherty (Genomics England Curator)

Source Yorkshire and North East GLH was added to FXN.

23 Apr 2019, Gel status: 4

Added New Source

Louise Daugherty (Genomics England Curator)

Source NHS GMS was added to FXN.

23 Apr 2019, Gel status: 4

Added New Source

Louise Daugherty (Genomics England Curator)

Source London North GLH was added to FXN.

25 Jan 2019, Gel status: 4

Panel promoted to version 1.0

Louise Daugherty (Genomics England Curator)

Louise Daugherty: Comment on phenotypes: amended

18 Dec 2018, Gel status: 4

Added Tag

Rebecca Foulger (Genomics England curator)

Tag nucleotide-repeat-expansion tag was added to gene: FXN.

18 Dec 2018, Gel status: 4

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

Rebecca Foulger (Genomics England curator)

gene: FXN was added gene: FXN was added to Neurodegenerative disorders - adult onset. Sources: Expert Review Green Mode of inheritance for gene: FXN was set to BIALLELIC, autosomal or pseudoautosomal Phenotypes for gene: FXN were set to Friedreichataxia,229300Friedreichataxiawithretainedreflexes,229300