Clinical Indication ID & Name
Childhood onset dystonia, chorea or related movement disorder
Test Group
Neurology
Specialties
Test code
R57.5
Test name
Childhood onset dystonia or chorea or related movement disorder WGS (phase 2)
Target genes
Childhood onset dystonia or chorea or related movement disorder (847) STR
Test scope
Exon level CNVs, Small variants, STRs
Test method/ technology
WGS
Optimal Family Structure
n/a
Eligibility Criteria
Unexplained dystonia, chorea or related movement disorder with onset in childhood with a likely monogenic cause
Test code
R57.6
Test name
Childhood onset dystonia or chorea or related movement disorder confirmatory STR testing
Target genes
Childhood onset dystonia or chorea or related movement disorder (847)
Test scope
STRs
Test method/ technology
Confirmatory STR testing
Optimal Family Structure
n/a
Eligibility Criteria
Unexplained dystonia, chorea or related movement disorder with onset in childhood with a likely monogenic cause
Commissioning group
Specialised
Overlapping idications
• R61 Childhood onset hereditary spastic paraplegia – if the patient has spastic paraplegia • R55 Hereditary ataxia with onset in childhood – if the patient has ataxia • R27 Congenital malformation and dysmorphism syndromes – likely monogenic, • R29 Intellectual disability – microarray, fragile X and sequencing, • R89 Ultra-rare and atypical monogenic disorders tests should be used in individuals with complex or syndromic presentations
Address for samples/request forms
Please refer to the test request form.
Contact with queries
Supporting documents
n/a
Education resources
n/a
Service updates
n/a
Request form download
Form not available, please contact us to enquire.
Consent record
See consent guidance in test request form
Sample requirements
Sample Requirements Each sample must be sent labelled with 3 patient identifiers and must state the sample type clearly on the sample container. Sample Rejection Samples may be rejected for the following reasons: 1. Samples and request form do not show at least three identical patient identifiers 2. The sample is in the incorrect collection media 3. The request form is not sufficiently completed 4. The sample is not of sufficient volume 5. The sample is too old Sample Storage and Volume Required: 1. Peripheral blood in an EDTA tube: Adult and children 4 ml, Infants (0-2 years) 1 ml or a DNA sample (1-7µg of purified DNA). Where it is not possible to collect peripheral blood we will accept a saliva sample (please contact the lab for specific details). 2. Bone marrow sample in EDTA tube, cell count must be provided. 3. Cultured Fibroblasts in medium 4. Fresh tissue with at least 30% tumour cell content: Adequate sample sizes include 5mm x 5mm x 2mm tissue or 15mm x 2mm needle core biopsy. Multiple biopsies recommended if clinically feasible. Tissue should be embedded in OCT or preserved in RNA Later where appropriate 5. Extracted DNA , 1 μg to 7.2 μg depending on WGS pathway. Storage, sample packing and transportation: Blood and bone marrow samples should be stored at 4°C whenever possible and sent at room temperature via first-class post or courier. Tissue samples preserved in RNA Later can be shipped at room temperature, while fresh tissue samples must be shipped on ice/dry ice. All samples should arrive at the laboratory within 24 hours of collection. Patient/Clinician Instructions: N/A Factors affecting performance of test/interpretation of results: Clotted samples are unsuitable for DNA analysis. Blood Samples in incorrect anticoagulant tubes may be rejected.