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GTR Home > Tests > NextStepDx PLUS

Indication

This is a clinical test intended for Help: Diagnosis, Prognostic, Recurrence, Therapeutic management

Clinical summary

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A disorder characterized by recurrent seizures. [from SNOMEDCT_US]

Conditions tested

Target population

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Individuals with autism spectrum disorder, developmental delays or regressions, intellectual disability, congenital anomalies, and/or seizures. Unless suggested by specific phenotype and supported with peer-reviewed literature, it is recommended that NSDX is performed after a non-diagnostic chromosomal microarray/FirstStepDx PLUS.

Citations

  • Diagnostic odyssey in severe neurodevelopmental disorders: toward clinical whole-exome sequencing as a first-line diagnostic test. - PubMed ID: 26757139
  • Whole-exome sequencing is a powerful approach for establishing the etiological diagnosis in patients with intellectual disability and microcephaly. - PubMed ID: 26846091
  • Clinical genomics expands the morbid genome of intellectual disability and offers a high diagnostic yield. - PubMed ID: 27431290
  • Utility of Whole Exome Sequencing for Genetic Diagnosis of Previously Undiagnosed Pediatric Neurology Patients. - PubMed ID: 27572814
  • Outcomes of Diagnostic Exome Sequencing in Patients With Diagnosed or Suspected Autism Spectrum Disorders. - PubMed ID: 28330790
  • A clinical utility study of exome sequencing versus conventional genetic testing in pediatric neurology. - PubMed ID: 28333917
  • Proband-Only Clinical Exome Sequencing for Neurodevelopmental Disabilities. - PubMed ID: 30952489

Clinical validity

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Not provided

Clinical utility

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Lower cost than traditional diagnostic pathways

Citations
  • A clinical utility study of exome sequencing versus conventional genetic testing in pediatric neurology. - PubMed ID: 28333917
  • Diagnostic Impact and Cost-effectiveness of Whole-Exome Sequencing for Ambulant Children With Suspected Monogenic Conditions. - PubMed ID: 28759686
  • Integrating exome sequencing into a diagnostic pathway for epileptic encephalopathy: Evidence of clinical utility and cost effectiveness. - PubMed ID: 29314763

Establish or confirm diagnosis

Citations
  • Diagnostic Impact and Cost-effectiveness of Whole-Exome Sequencing for Ambulant Children With Suspected Monogenic Conditions. - PubMed ID: 28759686

Avoidance of invasive testing

Citations
  • Diagnostic Impact and Cost-effectiveness of Whole-Exome Sequencing for Ambulant Children With Suspected Monogenic Conditions. - PubMed ID: 28759686

Clinical resources

Practice guidelines

  • NICE, 2022
    UK NICE Guideline NG217, Epilepsies in children, young people and adults, 2022

Consumer resources

IMPORTANT NOTE: NIH does not independently verify information submitted to the GTR; it relies on submitters to provide information that is accurate and not misleading. NIH makes no endorsements of tests or laboratories listed in the 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.