Genes in panel

Neurodegenerative disorders - adult onset

Gene: FMR1

Red List (low evidence)

FMR1 (fragile X mental retardation 1)
EnsemblGeneIds (GRCh38): ENSG00000102081
EnsemblGeneIds (GRCh37): ENSG00000102081
OMIM: 309550, Gene2Phenotype
FMR1 is in 10 panels

4 reviews

Tracy Lester (Genetics laboratory, Oxford UK)

I don't know

In FXTAS, the expanded repeats range in size from 55 to 200 repeats and are referred to as 'premutations;' full repeat expansions with greater than 200 repeats results in fragile X syndrome. The penetrance of FXTAS in male carriers aged 50 years and over, ascertained through families with a fragile X syndrome proband, is at least 33% (Hagerman and Hagerman, 2004); its penetrance in female carriers is approximately 5-10% (Greco et al., 2008). WGS may not be the best testing strategy.
Created: 2 Sep 2019, 4:06 p.m. | Last Modified: 2 Sep 2019, 4:06 p.m.
Panel Version: 1.99

Mode of inheritance
X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)

Phenotypes
FMR1-related disorders include fragile X syndrome, fragile X-associated tremor/ataxia syndrome (FXTAS), and FMR1-related premature ovarian insufficiency (POI); males with a tremor phenotype; FragileXtremor/ataxiasyndrome,300623

Mode of pathogenicity
Other - please provide details in the comments

Nick Beauchamp (Sheffield Diagnostic Genetics Service)

Red List (low evidence)

Symptoms identical to expansions
Created: 23 Jul 2019, 3:35 p.m. | Last Modified: 23 Jul 2019, 3:35 p.m.
Panel Version: 1.72

Mode of inheritance
X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)

Phenotypes
FMR1-related disorders include fragile X syndrome, fragile X-associated tremor/ataxia syndrome (FXTAS), and FMR1-related premature ovarian insufficiency (POI); males with a tremor phenotype; FragileXtremor/ataxiasyndrome,300623

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)

Green List (high evidence)

Details

Mode of Inheritance
X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)
Sources
  • Expert Review Red
  • Wessex and West Midlands GLH
  • Yorkshire and North East GLH
  • NHS GMS
  • London North GLH
Phenotypes
  • FMR1-related disorders include fragile X syndrome, fragile X-associated tremor/ataxia syndrome (FXTAS), and FMR1-related premature ovarian insufficiency (POI)
  • males with a tremor phenotype
  • FragileXtremor/ataxiasyndrome,300623
Tags
nucleotide-repeat-expansion
OMIM
309550
Clinvar variants
Variants in FMR1
Penetrance
None
Publications
Panels with this gene

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 FMR1. 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 FMR1.

23 Jul 2019, Gel status: 3

Set publications

Louise Daugherty (Genomics England Curator)

Publications for gene FMR1 were changed from to 28176767

23 Jul 2019, Gel status: 3

Added New Source

Louise Daugherty (Genomics England Curator)

Source Yorkshire and North East GLH was added to FMR1.

23 Apr 2019, Gel status: 4

Added New Source

Louise Daugherty (Genomics England Curator)

Source NHS GMS was added to FMR1.

23 Apr 2019, Gel status: 4

Added New Source

Louise Daugherty (Genomics England Curator)

Source London North GLH was added to FMR1.

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: FMR1.

18 Dec 2018, Gel status: 4

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

Rebecca Foulger (Genomics England curator)

gene: FMR1 was added gene: FMR1 was added to Neurodegenerative disorders - adult onset. Sources: Expert Review Green Mode of inheritance for gene: FMR1 was set to X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males) Phenotypes for gene: FMR1 were set to FMR1-related disorders include fragile X syndrome, fragile X-associated tremor/ataxia syndrome (FXTAS), and FMR1-related premature ovarian insufficiency (POI); males with a tremor phenotype; FragileXtremor/ataxiasyndrome,300623