Investigation of Efficacy and Safety of Botulinum Toxin A (Botox-Allergan Inc) in Migraine Headaches
|Study Design:||Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Investigator)
Primary Purpose: Treatment
|Official Title:||Investigation of Efficacy and Safety of Botulinum Toxin A (Botox-Allergan Inc) in Migraine Headaches|
- Mean Number of Days of Decrease in Pain Level Using VAS [ Time Frame: 4 weeks ]Number of days of decreased pain (2 grades or more) on Visual Analog scale. VAS ranges from 0-10, with 0 being no pain, and 10 being worst pain.
- Number of Participants Satisfied With Treatment [ Time Frame: 4 weeks ]
Number of Patients whose Patient global impression of change (PGIC) moderately or much improved- The PGIC is a 7 point scale that requires the clinician to assess how much the patient's pain has improved or worsened relative to a baseline state at the beginning of the intervention. and rated as:
No change (or condition has gotten worse) (1) Almost the same, hardly any change at all (2) A little better, but no noticeable change (3) Somewhat better, but the change has not made any real difference (4) Moderately better, and a slight but noticeable change (5) Better and a definite improvement that has made a real and worthwhile difference (6) A great deal better and a considerable improvement that has made all the difference (7)improved
This outcome is number of patients who chose a 6 or above on the PGIC 6 weeks after treatment.
|Study Start Date:||January 2008|
|Study Completion Date:||July 2015|
|Primary Completion Date:||July 2012 (Final data collection date for primary outcome measure)|
Placebo Comparator: Placebo
Subjects are randomized to receive Placebo which is inactive saline (sterile salt water solution). The Subjects are injected with a comparable amount of placebo solution (2cc-3cc) as received by those randomized to receive active study drug. The randomization will be done in a double blinded manner where the investigator nor the subject knows which substance (Placebo vs. Botox) is being injected.
subjects randomized to receive Placebo will have a series of injections of saline solution totalling 2cc's to 3cc's injected into the scalp in a halo pattern; and into affected neck muscles.
Other Name: Saline
Active Comparator: Botox
Subjects are randomized to receive Active study drug Botox (onobotulinumtoxinA). The Botox is prepare by diluting 100units of toxin /1cc Saline. The Subjects are injected with 200-300units of units of Botox which is 2cc-3cc of solution. The randomization will be done in a double blinded manner where the investigator nor the subject knows which substance (Placebo vs. Botox) is being injected.
subjects randomized to receive Botox with have a series of injections of onobotulinumtoxinA totalling 200 to 300 units. Botox is prepared b adding 1cc of preservative free saline in 100 unit vial. Final dose is determined by bod and neck size.
Other Name: onobotulinumtoxinA
Please refer to this study by its ClinicalTrials.gov identifier: NCT00660192
|United States, Connecticut|
|Yale Physician's Building, 800 Howard Ave, lower level,|
|New Haven, Connecticut, United States, 06510|
|Principal Investigator:||Bahman Jabbari, M.D.||Yale- 203-737-2464|