Next-Generation Sequencing (NGS) is an advanced genetic testing technology used to analyze multiple genes simultaneously and identify genetic variations that may be associated with inherited conditions, neurological disorders, cancers, and other complex diseases. Unlike conventional genetic testing, NGS can examine a large number of genes in a single test, helping doctors obtain more comprehensive genetic information.
When Is NGS Recommended?
An NGS genetic test may be recommended when a patient's symptoms, family history, or clinical findings suggest a possible genetic cause. In neurosurgical and neurological care, genetic testing may support the evaluation of certain inherited neurological disorders, unexplained seizures, developmental conditions, brain tumors, or other complex conditions where genetic information can assist clinical decision-making.
What Does the Test Involve?
Depending on the test ordered, a blood or other suitable biological sample is collected and analyzed in a specialized laboratory. The sequencing process examines selected genes or broader sections of DNA for clinically relevant genetic changes. Results are interpreted alongside the patient's medical history and other diagnostic findings by the treating doctor or genetic specialist.
Benefits of NGS Testing
NGS testing can provide a broader genetic assessment than many single-gene tests and may help identify variants that could otherwise remain undetected. The findings can support diagnosis, guide further investigations, help assess inherited disease risk, and, in selected conditions, contribute to personalized treatment planning.
Patients should discuss the purpose, limitations, possible findings, and implications of genetic testing with their doctor before testing. A genetic result does not always confirm a diagnosis and may require additional clinical evaluation or genetic counselling.