title: Efficacy and safety of incobotulinumtoxinA (NT 201, XEOMIN®, botulinum neurotoxin type A, without accessory proteins) in patients with cervical dystonia.
abstract: OBJECTIVE
  IncobotulinumtoxinA differs from available formulations in that it does not have accessory proteins. IncobotulinumtoxinA has previously shown non-inferiority to onabotulinumtoxinA for the treatment of CD with a 1:1 dosing regimen. The objective of this study was to compare the safety and efficacy of incobotulinumtoxinA (120 U, 240 U; Merz Pharmaceuticals) to placebo in subjects with cervical dystonia (CD).
  
  
  METHODS
  This was a prospective, double-blind, randomized, placebo-controlled, multicenter clinical trial in botulinum toxin-treated or toxin-naïve CD patients. The primary outcome measure was change from baseline to Week 4 on the Toronto Western Spasmodic Torticollis Rating Scale (TWSTRS) Total score. Adverse events (AEs) also were evaluated.
  
  
  RESULTS
  Participants (N=233) were mostly women (66%), a mean of 52.8 years old, who had CD for a mean of 51.9 months. Of those, 39% were toxin-naïve. IncobotulinumtoxinA significantly improved TWSTRS-Total scores from baseline to Week 4 compared to placebo (placebo=-2.2; 120 U=-9.9, and 240 U=-10.9; 240 U vs. placebo p<0.001 and 120 U vs. placebo p<0.001). This effect persisted through to the end of the study. The most frequently reported AEs in the incobotulinumtoxinA groups were dysphagia, neck pain, and muscular weakness which were generally mild.
  
  
  CONCLUSIONS
  IncobotulinumtoxinA (at doses of 120 U or 240 U) is a safe and effective treatment for CD in previously-treated as well as toxin-naïve subjects.
authors.affiliation: Merz Pharmaceuticals GmbH, Frankfurt, Germany. Cynthia_L_Comella@rush.edu
authors.forename: Cynthia L
authors.initials: CL
authors.lastname: Comella
authors.forename: Joseph
authors.initials: J
authors.lastname: Jankovic
authors.forename: Daniel D
authors.initials: DD
authors.lastname: Truong
authors.forename: Angelika
authors.initials: A
authors.lastname: Hanschmann
authors.forename: Susanne
authors.initials: S
authors.lastname: Grafe
mesh_terms: D000328:Adult; D000368:Aged; D019274:Botulinum Toxins, Type A / Q000009:adverse effects / Q000627:therapeutic use*; D003680:Deglutition Disorders / Q000139:chemically induced; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D018908:Muscle Weakness / Q000139:chemically induced; D011446:Prospective Studies; D014103:Torticollis / Q000188:drug therapy* / Q000503:physiopathology*; D016896:Treatment Outcome
chemical_list: D019274:Botulinum Toxins, Type A; C545476:incobotulinumtoxinA