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ObjectiveWe evaluated the efficacy and safety of amifampridine phosphate (Firdapse®) for symptomatic treatment in Lambert‐Eaton myasthenic syndrome (LEMS).
MethodsPhase 3, randomized, double‐blind, study. Patients were treated initially with amifampridine phosphate for 7–91 days, followed by randomization to continue amifampridine phosphate for 14 days or placebo (7‐day taper, 7‐day placebo). The...