Study MTR-601-201 is an 8-week, randomized, placebo-controlled study to examine the safety, tolerability, and efficacy of MTR-601 in participants with cervical dystonia.

This is a randomized, double-blind, placebo-controlled, parallel group, multi-center trial of two doses of daxibotulinumtoxinA (DAXI) for injection (high-dose; low-dose in adult subjects with isolated (primary) cervical dystonia (CD).