Genetic Testing in Neurology: What Every Neurologist Must Know.

Approximately 80% genes have an active expression in the brain and 40% of known genetic disorders affect the central nervous system. Revolutionary techniques like next-genome sequencing have solved the problem of the diagnostic odyssey in neurological genetic diseases. As several studies have shown the cost-effectiveness of next-genome sequencing compared to the older tests available in our diagnostic armamentarium, it becomes imperative to know about these genetic mutations and the tests available to diagnose them. We have tried to explain the basic concepts of genetics, the selection of available tests and their interpretation for neurophysicians.