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ARX-Related Disorder
Clinical Genetic Test
Help
offered by
Department of Clinical Genetics
GTR Test Accession: Help GTR000320450.2
INHERITED DISEASENERVOUS SYSTEMSYNDROMIC DISEASE ... View more
Last updated in GTR: 2013-04-23
View version history
Last annual review date for the lab: 2022-01-21 Past due LinkOut
At a Glance
Test purpose: Help
Diagnosis
Conditions (4): Help
Developmental and epileptic encephalopathy, 1; Intellectual disability, X-linked, with or without seizures, arx-related; Partington syndrome more...
Genes (1): Help
ARX (Xp21.3)
Methods (2): Help
Molecular Genetics - Sequence analysis of the entire coding region: Bi-directional Sanger Sequence Analysis; ...
Target population: Help
Not provided
Clinical validity: Help
Not provided
Clinical utility: Help
Not provided
Ordering Information
Offered by: Help
Department of Clinical Genetics
View lab's website
Specimen Source: Help
  • Amniotic fluid
  • Cell culture
  • Cell-free DNA
  • Chorionic villi
  • Fibroblasts
  • Isolated DNA
  • Peripheral (whole) blood
Who can order: Help
  • Genetic Counselor
  • Health Care Provider
  • Licensed Dentist
  • Licensed Physician
  • Nurse Practitioner
  • Physician Assistant
  • Public Health Mandate
  • Registered Nurse
Lab contact: Help
Karen Gronskov, PhD, Staff
kennedy-medgenlab.rigshospitalet@regionh.dk
+45 43260100
Contact Policy: Help
Laboratory can only accept contact from health care providers. Patients/families are encouraged to discuss genetic testing options with their health care provider.
How to Order: Help
A completed referral note, or letter stating name, dob, referral reason and the test that are requested. Also an address where to send the report and the invoice.
Order URL
Test service: Help
Clinical Testing/Confirmation of Mutations Identified Previously
Confirmation of research findings
Custom Sequence Analysis
Test additional service: Help
Custom Prenatal Testing
Custom mutation-specific/Carrier testing
Test development: Help
Test developed by laboratory (no manufacturer test name)
Informed consent required: Help
Decline to answer
Pre-test genetic counseling required: Help
Decline to answer
Post-test genetic counseling required: Help
Decline to answer
Recommended fields not provided:
Test Order Code, Test strategy
Conditions Help
Total conditions: 4
Condition/Phenotype Identifier
Test Targets
Genes Help
Total genes: 1
Gene Associated Condition Germline or Somatic Allele (Lab-provided) Variant in NCBI
Methodology
Total methods: 2
Method Category Help
Test method Help
Instrument
Sequence analysis of the entire coding region
Bi-directional Sanger Sequence Analysis
Applied Biosystems 3130XL capillary sequencing instrument
Targeted variant analysis
PCR followed by cappilary electrophoresis for size determination
Clinical Information
Test purpose: Help
Diagnosis
Variant Interpretation:
What is the protocol for interpreting a variation as a VUS? Help
Missense and silent changes that are unknown to the HGMD database and SNP databases (SNP137, 1000 genomes)

Are family members with defined clinical status recruited to assess significance of VUS without charge? Help
No.

Will the lab re-contact the ordering physician if variant interpretation changes? Help
No.
Recommended fields not provided:
Clinical validity, Clinical utility, Target population, Is research allowed on the sample after clinical testing is complete?, Sample negative report, Sample positive report
Technical Information
Availability: Help
Tests performed
Entire test performed in-house
Analytical Validity: Help
The bidirectional sequencing of the entire ARX coding region and intron-exon boundaries has analytical sensitivity and specificity of 99%. The PCR analysis of nucleotides 247_497 of ARX exon 2 detects duplications and deletion of >3 nucleotides.
Proficiency testing (PT):
Is proficiency testing performed for this test? Help
No
VUS:
Software used to interpret novel variations Help
Variants are analysed using SIFT, polyphen2, Align GVGD and Mutation Taster

Laboratory's policy on reporting novel variations Help
The person who ordered the test will receive a written report by ordinary mail.
Recommended fields not provided:
Test Confirmation, Assay limitations, Description of internal test validation method, Citations for Analytical validity, PT Provider, Description of PT method, Major CAP category, CAP category, CAP test list
Regulatory Approval
FDA Review: Help
Not provided
Additional Information

IMPORTANT NOTE: NIH does not independently verify information submitted to GTR; it relies on submitters to provide information that is accurate and not misleading. NIH makes no endorsements of tests or laboratories listed in GTR. GTR is not a substitute for medical advice. Patients and consumers with specific questions about a genetic test should contact a health care provider or a genetics professional.