Genes in panel

Neurodegenerative disorders - adult onset

Gene: PRKRA

Amber List (moderate evidence)

PRKRA (protein activator of interferon induced protein kinase EIF2AK2)
EnsemblGeneIds (GRCh38): ENSG00000180228
EnsemblGeneIds (GRCh37): ENSG00000180228
OMIM: 603424, Gene2Phenotype
PRKRA is in 6 panels

4 reviews

Tracy Lester (Genetics laboratory, Oxford UK)

Red List (low evidence)

early-onset dystonia-parkinsonism - >3 families reported with onset in 2nd decade. Childhood onset - 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
early-onset generalized dystonia-parkinsonism (DYT16), non-responsive to levo-dopa; Early-Onset Generalized Dystonia-Parkinsonism; Dystonia 16; Dystonia; Dystonia 16, 612067; early-Onset Generalized dystonia-parkinsonism (DYT16), non-responsive to levo-dopa; Early Onset Complex Disease

Louise Daugherty (Genomics England Curator)

I don't know

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 Amber
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.
Created: 23 Jul 2019, 5:51 p.m. | Last Modified: 23 Jul 2019, 5:53 p.m.
Panel Version: 1.80

Nick Beauchamp (Sheffield Diagnostic Genetics Service)

Green List (high evidence)

Onset between 7 and 18 years
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

Publications

Variants in this GENE are reported as part of current diagnostic practice

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

Green List (high evidence)

Pseudogene would confound variant calling
Created: 23 Apr 2019, 5:31 p.m.

Details

Mode of Inheritance
BIALLELIC, autosomal or pseudoautosomal
Sources
  • Expert Review Amber
  • Wessex and West Midlands GLH
  • Yorkshire and North East GLH
  • NHS GMS
  • London North GLH
Phenotypes
  • early-onset generalized dystonia-parkinsonism (DYT16), non-responsive to levo-dopa
  • Early-Onset Generalized Dystonia-Parkinsonism
  • Dystonia 16
  • Dystonia
  • Dystonia 16, 612067
  • early-Onset Generalized dystonia-parkinsonism (DYT16), non-responsive to levo-dopa
  • Early Onset Complex Disease
OMIM
603424
Clinvar variants
Variants in PRKRA
Penetrance
None
Publications
Panels with this gene

History Filter Activity

20 Sep 2019, Gel status: 2

Added New Source, Status Update

Louise Daugherty (Genomics England Curator)

Source Expert Review Amber was added to PRKRA. Rating Changed from Green List (high evidence) to Amber List (moderate evidence)

2 Sep 2019, Gel status: 3

Added New Source

Louise Daugherty (Genomics England Curator)

Source Wessex and West Midlands GLH was added to PRKRA.

23 Jul 2019, Gel status: 3

Set publications

Louise Daugherty (Genomics England Curator)

Publications for gene PRKRA were changed from 18420150 - a novel heterozygous variant c.266_267delAT; 25914261; 26990861; 22842711; 24142417 - Compound heterozygous variants were reported in a patient with early onset dystonia c.665C>T (p.P222L) inherited from his mother, and c.637T>C (p.C213R) was a novel mutation; 25142429 In a Polish family, the homozygous p.Pro222Leu mutation segregated with autosomal-recessive, early-onset generalized dystonia and slight parkinsonism; 22842711 describes the clinical features of three original cases with homozygous PRKRA variants - the patients presented with either a pure generalised dystonia or with a dystonia-parkinsonism that was relatively unresponsive to L-dopa; 18243799; 25142429; http://www.ncbi.nlm.nih.gov/books/NBK1155/; 18420150; p.H89fsX20 was reported in a proband with early childhood-onset leg dystonia (though testing in the parents was not mentioned).; 24142417; 25737287 Compound het variants (c.G230C (p.Cys77Ser), and in exon 7, c.G638T (p.Cys213Phe)) identified in the two affected siblings reported with dystonia without parkinsonism, unaffected family members were heterozygous; PMID: 26990861 - c.665C>T homozygous variant was identified in 3 affected siblings with Early-Onset Generalized Dystonia-Parkinsonism (and was heterozygous in the unaffected patients and an unaffected sibling). It was confirmed by Sanger sequencing and had a frequency of 0.01% in the Exome Aggregation Consortium database, predicted to be deleterious by 2 of 6 in silico tools. They showed it was within a founder haplotype shared by all previoulsy reported cases. The Authors state Screening of PRKRA is warranted in all patients with early-onset generalized dystonia, or dystonia parkinsonism compatible with autosomal recessive inheritance; 18243799 - two unrelated families with members with an apparent autosomal recessive, novel, young-onset, generalised form of dystonia parkinsonism. A region of homozygosity was found in all affected individuals, and narrowed down to the homozygous variant c.665C>T (P222L); 25737287 to 24142417; 25737287 26990861; 18420150.; 25914261; 25737287; 18243799; 26990861; http://www.ncbi.nlm.nih.gov/books/NBK1155/; 18420150; 22842711; 25142429

23 Jul 2019, Gel status: 3

Added New Source

Louise Daugherty (Genomics England Curator)

Source Yorkshire and North East GLH was added to PRKRA.

23 Apr 2019, Gel status: 4

Added New Source

Louise Daugherty (Genomics England Curator)

Source NHS GMS was added to PRKRA.

23 Apr 2019, Gel status: 4

Added New Source

Louise Daugherty (Genomics England Curator)

Source London North GLH was added to PRKRA.

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

Set Phenotypes

Rebecca Foulger (Genomics England curator)

Added phenotypes Dystonia; Dystonia 16, 612067; early-Onset Generalized dystonia-parkinsonism (DYT16), non-responsive to levo-dopa for gene: PRKRA

18 Dec 2018, Gel status: 4

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

Rebecca Foulger (Genomics England curator)

gene: PRKRA was added gene: PRKRA was added to Neurodegenerative disorders - adult onset. Sources: Expert Review Green Mode of inheritance for gene: PRKRA was set to BIALLELIC, autosomal or pseudoautosomal Publications for gene: PRKRA were set to 18420150 - a novel heterozygous variant c.266_267delAT; 25914261; 26990861; 22842711; 24142417 - Compound heterozygous variants were reported in a patient with early onset dystonia c.665C>T (p.P222L) inherited from his mother, and c.637T>C (p.C213R) was a novel mutation; 25142429 In a Polish family, the homozygous p.Pro222Leu mutation segregated with autosomal-recessive, early-onset generalized dystonia and slight parkinsonism; 22842711 describes the clinical features of three original cases with homozygous PRKRA variants - the patients presented with either a pure generalised dystonia or with a dystonia-parkinsonism that was relatively unresponsive to L-dopa; 18243799; 25142429; http://www.ncbi.nlm.nih.gov/books/NBK1155/; 18420150; p.H89fsX20 was reported in a proband with early childhood-onset leg dystonia (though testing in the parents was not mentioned).; 24142417; 25737287 Compound het variants (c.G230C (p.Cys77Ser), and in exon 7, c.G638T (p.Cys213Phe)) identified in the two affected siblings reported with dystonia without parkinsonism, unaffected family members were heterozygous; PMID: 26990861 - c.665C>T homozygous variant was identified in 3 affected siblings with Early-Onset Generalized Dystonia-Parkinsonism (and was heterozygous in the unaffected patients and an unaffected sibling). It was confirmed by Sanger sequencing and had a frequency of 0.01% in the Exome Aggregation Consortium database, predicted to be deleterious by 2 of 6 in silico tools. They showed it was within a founder haplotype shared by all previoulsy reported cases. The Authors state Screening of PRKRA is warranted in all patients with early-onset generalized dystonia, or dystonia parkinsonism compatible with autosomal recessive inheritance; 18243799 - two unrelated families with members with an apparent autosomal recessive, novel, young-onset, generalised form of dystonia parkinsonism. A region of homozygosity was found in all affected individuals, and narrowed down to the homozygous variant c.665C>T (P222L); 25737287 Phenotypes for gene: PRKRA were set to Dystonia 16; early-onset generalized dystonia-parkinsonism (DYT16), non-responsive to levo-dopa; Early-Onset Generalized Dystonia-Parkinsonism; Early Onset Complex Disease