de Greef de Greef B B Lacosamide in patients with Nav1.7 mutations-related small fibre neuropathy: a randomized controlled trial Lacosamide in patients with Nav1.7 mutations-related small fibre neuropathy: a randomized controlled trial Brain Brain 2019 2019 142 142 2 2 263 263 275 275 10.1093/brain/awy329 10.1093/brain/awy329 supplied-pmid 30649227? This evidence concerns the gene SCN9A and peripheral neuropathy.