Basimglurant is a highly selective, potent, and cell-penetrant negative allosteric modulator of metabotropic glutamate receptor 5 (mGluR5). Based on the LibraTN trial — a 24-week, prospective, double-blind, randomized-withdrawal, placebo-controlled study of basimglurant for trigeminal neuralgia, FDA has granted the molecule Fast Track designation.