Adult onset neurodegenerative disorder
Gene: SIGMAR1
early-childhood onset of a neurologic disorder consistent with juvenile ALS, or Distal spinal muscular atrophy-2 is an autosomal recessive neuromuscular disorder characterized by onset of distal muscle weakness and wasting affecting the lower and upper limbs in the first decade. Both childhood onset - redCreated: 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
Amyotrophic lateral sclerosis 16, juvenile, 614373
Includes variants in 3'UTR of gene.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
Amyotrophic lateral sclerosis 16, juvenile, 614373
Publications
Variants in this GENE are reported as part of current diagnostic practice
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 AmberCreated: 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.
Phenotypes for gene: SIGMAR1 were changed from Amyotrophic lateral sclerosis 16, juvenile, 614373 to ?Amyotrophic lateral sclerosis 16, juvenile, OMIM:614373
Source Expert Review Amber was added to SIGMAR1. Rating Changed from Green List (high evidence) to Amber List (moderate evidence)
Source Wessex and West Midlands GLH was added to SIGMAR1.
Publications for gene SIGMAR1 were changed from PMID: 26078401 - c.151+1G>T variant in SIGMARI resulted in a 60 bp deletion in the transcript, and segrated with the distal hereditary motor neuropathy in a Chinese family.; PubMed: 21842496 - E102Q variant identified in a Saudi Arabian family to be associated with amyotrophic lateral sclerosis 16, juvenile; PMID: 26088964 is a commentary on PMID: 25678561 raising a lack of evidence for SIGMARI to be pathogenic, and that previous reports of patients with SIGMARI variants were also shown to harbour C9orf72 expansions; PMID: 26088963 - in reply, authors state that there is in vitro and in vivo evidence, and expression evidence, and that a case reported did not have the C9orf72 expansion; PMID: 26205306 one family report for association with Amyotrophic lateral sclerosis and c.672*31A>G (rs4879809) - the C9ORF72 repeat region in intron 1, previously implicated in a related phenotype, was excluded through linkage, and further confirmation of exclusion was obtained by amplifying intron 1 of C9ORF72 with multiple primers in affected individuals and controls to 26088964; 26078401; 21031579; 26088963; 21842496; 27821430
Source Yorkshire and North East GLH was added to SIGMAR1.
Source NHS GMS was added to SIGMAR1.
Source London North GLH was added to SIGMAR1.
Louise Daugherty: Comment on phenotypes: amended
gene: SIGMAR1 was added gene: SIGMAR1 was added to Neurodegenerative disorders - adult onset. Sources: Expert Review Green Mode of inheritance for gene: SIGMAR1 was set to BIALLELIC, autosomal or pseudoautosomal Publications for gene: SIGMAR1 were set to PMID: 26078401 - c.151+1G>T variant in SIGMARI resulted in a 60 bp deletion in the transcript, and segrated with the distal hereditary motor neuropathy in a Chinese family.; PubMed: 21842496 - E102Q variant identified in a Saudi Arabian family to be associated with amyotrophic lateral sclerosis 16, juvenile; PMID: 26088964 is a commentary on PMID: 25678561 raising a lack of evidence for SIGMARI to be pathogenic, and that previous reports of patients with SIGMARI variants were also shown to harbour C9orf72 expansions; PMID: 26088963 - in reply, authors state that there is in vitro and in vivo evidence, and expression evidence, and that a case reported did not have the C9orf72 expansion; PMID: 26205306 one family report for association with Amyotrophic lateral sclerosis and c.672*31A>G (rs4879809) - the C9ORF72 repeat region in intron 1, previously implicated in a related phenotype, was excluded through linkage, and further confirmation of exclusion was obtained by amplifying intron 1 of C9ORF72 with multiple primers in affected individuals and controls Phenotypes for gene: SIGMAR1 were set to Amyotrophic lateral sclerosis 16, juvenile, 614373