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Hereditary neuropathy NOT PMP22 copy number

Gene: XK

Amber List (moderate evidence)

XK (X-linked Kx blood group)
EnsemblGeneIds (GRCh38): ENSG00000047597
EnsemblGeneIds (GRCh37): ENSG00000047597
OMIM: 314850, Gene2Phenotype
XK is in 8 panels

3 reviews

Rachel Jones (GSTT)

Green List (high evidence)

Several publications including those given above regarding this well characterised link between XK gene and McLeod syndrome in many patients. Phenotype is acanthosis, haemolysis and elevated CK. Neurological phenotype (from OMIM) "Onset of neurologic symptoms ranges between 25 and 60 years (mean onset 30-40 years), and penetrance appears to be high. Additional symptoms include generalized seizures, neuromuscular symptoms leading to weakness and atrophy, and cardiomyopathy mainly manifesting with atrial fibrillation, malignant arrhythmias, and dilated cardiomyopathy"

Testing not currently offered by UK labs but several accredited European laboratories are offering testing.
Created: 23 Sep 2019, 11:06 a.m. | Last Modified: 23 Sep 2019, 11:06 a.m.
Panel Version: 1.333

Mode of inheritance
X-LINKED: hemizygous mutation in males, biallelic mutations in females

Phenotypes
McLeod syndrome with or without chronic granulomatous disease OMIM 300842

Publications

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

Louise Daugherty (Genomics England Curator)

I don't know

Gene rated Amber : From feedback from Genomics England Clinical team (Anna de Burca and Meriel McEntagart): Extension of panel scope - syndrome with non-neurological features / Broader phenotype: McLeod syndrome, note adult onset
Created: 7 Dec 2019, 12:03 a.m. | Last Modified: 7 Dec 2019, 12:03 a.m.
Panel Version: 0.86
This gene has changed ratings because the panel for R78 was going to be a broad panel (to include conditions where neuropathy is part of a more complex phenotype or where there is overlap with another neurological presentation eg. HSP) but subsequently during the follow up call on 21st June with the Test Group it was agreed that it was more clinically relevant for R78 to be restricted to genes that are associated with isolated neuropathy, which this panel represents. For genes that represent the broader phenotype see https://panelapp.genomicsengland.co.uk/panels/85/.
Created: 6 Dec 2019, 10:25 p.m. | Last Modified: 6 Dec 2019, 10:25 p.m.
Panel Version: 0.84
Review and rating uploaded from file (Curation_Template_GMS_Neuro_AR_20190521.xlsx) submitted by Alex Rossor (UCL Institute of Neurology) on behalf of London North GLH for GMS Neurology specialist test group.
Created: 11 Jun 2019, 1:40 p.m.
Review and rating uploaded from file (Curation_Template_GMS_Neuro_AR_20190521.xlsx) submitted by Alex Rossor (UCL Institute of Neurology) on behalf of London North GLH for GMS Neurology specialist test group.
Created: 11 Jun 2019, 1:40 p.m.

Alexander Rossor (UCL Institute of Neurology)

Green List (high evidence)

Mode of inheritance
X-LINKED: hemizygous mutation in males, biallelic mutations in females

Phenotypes
Mceod syndrome, Onset 25-60, acanthocytes and Huntington-like syndrome, also epilepsy, cardiomyopathy, axonal motor neuropathy

Details

Mode of Inheritance
X-LINKED: hemizygous mutation in males, biallelic mutations in females
Sources
  • Expert Review Amber
  • London North GLH
  • NHS GMS
  • NHS GMS
  • London North GLH
Phenotypes
  • Mceod syndrome, Onset 25-60, acanthocytes and Huntington-like syndrome, also epilepsy, cardiomyopathy, axonal motor neuropathy
  • McLeod syndrome with or without chronic granulomatous disease, 300842
OMIM
314850
Clinvar variants
Variants in XK
Penetrance
None
Panels with this gene

History Filter Activity

6 Dec 2019, Gel status: 2

Added New Source, Status Update

Louise Daugherty (Genomics England Curator)

Source Expert Review Amber was added to XK. Rating Changed from Red List (low evidence) to Amber List (moderate evidence)

5 Dec 2019, Gel status: 1

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

Ellen McDonagh (Genomics England Curator)

gene: XK was added gene: XK was added to Hereditary neuropathy NOT PMP22 copy number. Sources: NHS GMS,London North GLH Mode of inheritance for gene: XK was set to X-LINKED: hemizygous mutation in males, biallelic mutations in females Phenotypes for gene: XK were set to Mceod syndrome, Onset 25-60, acanthocytes and Huntington-like syndrome, also epilepsy, cardiomyopathy, axonal motor neuropathy; McLeod syndrome with or without chronic granulomatous disease, 300842