Daily Dystonia Practice - A Trial to Investigate NT 201, the Duration of Treatment Effect After One Injection Session and in Long-term Treatment in Cervical Dystonia

Prospective, Single-arm, Multicenter Trial to Investigate the Efficacy and Safety of NT 201 and the Duration of Treatment Effect After One Injection Session and in Long-term Treatment in Patients With Cervical Dystonia

The aim of this study is to confirm efficacy and safety of NT 201 (Xeomin®, also known as IncobotulinumtoxinA) after one injection session and to determine the efficacy and safety profile and the duration of treatment effect of NT 201 in long-term treatment with repeated injection sessions.

Inclusion Criteria:

• Toronto Western Spasmodic Torticollis Rating Scale (TWSTRS) - total score at baseline > / = 25 with TWSTRS - severity score > / = 10 and TWSTRS - disability score > / = 3
• Patients must be on a stable dose of other medications
• For pre-treated patients only: Source documentation of the last two consecutive injection sessions with botulinum neurotoxin type A and stable treatment response directly prior to trial entry
• For pre-treated patients only: At least 10 weeks must have passed between the last injection session of botulinum neurotoxin type A for cervical dystonia and the time of the baseline visit.
• For pre-treated patients only: The most recent injection session with botulinum neurotoxin for cervical dystonia must have been at a dose of ≤ 300 units of Botox® or Xeomin®, or ≤ 1,200 units Dysport®.
• Age > / = 18 and < 76 years