About this condition
Neurological Genetic Testing — Comprehensive
Neurological genetics is one of the most gene-rich areas of medicine — over 1,000 genes cause neurological conditions spanning neurodegenerative disease (Alzheimer's, Parkinson's, ALS, Huntington's, FTD), epilepsy (SCN1A, KCNQ2, CDKL5, and 500+ epilepsy genes), movement disorders (dystonia, ataxia, parkinsonism), neuropathy (CMT, 100+ genes), and cerebrovascular disease (CADASIL, Fabry).
Gene-specific neurological therapies are rapidly expanding: tofersen for SOD1-ALS, nusinersen/onasemnogene for SMA, migalastat for Fabry disease, enzyme replacement for Gaucher and Pompe, precision anti-seizure medications guided by channel genotype (sodium channel blockers for SCN1A gain-of-function, avoided in SCN1A loss-of-function), and antisense oligonucleotides in development for Huntington's, C9orf72 ALS, and CMT1A.
Standard neurological gene panels test 50-200 genes for specific indications (epilepsy panel, neuropathy panel, ataxia panel). These indication-specific panels miss: (1) phenotypically overlapping conditions (a dystonia gene on an epilepsy panel), (2) rare genes not included on curated panels, (3) structural variants (repeat expansions, deletions), and (4) new genes discovered after the panel was designed. WGS evaluates all neurological genes simultaneously with reanalysis as new genes are discovered.
Neurological gene panels test 50-200 genes for one indication. But neurology is gene-rich with 1,000+ genes and significant phenotypic overlap. WGS skips the panel selection problem entirely — every neurological gene is evaluated in one test.
- Gene locus
- 1,000+ genes across all chromosomes
