A Long-term Efficacy, Safety, and Tolerability Study of BOTOX® in Patients With Chronic Migraine
Public ClinicalTrials.gov record NCT01516892. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
This open-label study will assess the long-term efficacy, safety, and tolerability of onabotulinumtoxinA administered for prophylaxis of headaches in patients with chronic migraine.
Study identification
- NCT ID
- NCT01516892
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 4
- Enrollment
- 716 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Dec 2011 (Type not available)
- Primary completion
- Nov 2015 (Actual)
- Completion
- Nov 2015 (Actual)
- Last update posted
- Jan 6, 2017
2011 – 2015
United States locations
- U.S. sites
- 21
- U.S. states
- 14
- U.S. cities
- 21
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Arizona Neurological Institute | Scottsdale | Arizona | 85255-7450 | — |
| The Research Center of Southern California, LLC | Encinitas | California | 92024 | — |
| USC Neurology | Los Angeles | California | 90033 | — |
| UCSF Headache Center | San Francisco | California | 94133 | — |
| Neurological Research Institute | Santa Monica | California | 90404 | — |
| Advanced Neurosciences Research, LLC | Fort Collins | Colorado | 80528 | — |
| Tampa General Hospital | Tampa | Florida | 33606 | — |
| Premiere Research Institute at Palm Beach Neurology | West Palm Beach | Florida | 33407 | — |
| Robbins Headache Clinic | Northbrook | Illinois | 60062 | — |
| Mid-Atlantic Headache Institute | Baltimore | Maryland | 21208 | — |
| Kaiser Permanente Research Office/Neurology Department | Largo | Maryland | 20774 | — |
| Clinvest Research | Springfield | Missouri | 65807-6988 | — |
| Mercy Health Research | St Louis | Missouri | 63141 | — |
| Renown Institute for Neurosciences | Reno | Nevada | 89502 | — |
| Dent Neurologic Institute | Amherst | New York | 14226 | — |
| Montefiore Medical Center | The Bronx | New York | 10461 | — |
| Headache Wellness Center | Greensboro | North Carolina | 27405 | — |
| Ohio Clinical Research Partners, LLC | Canton | Ohio | 44718 | — |
| Jefferson University Hospitals | Philadelphia | Pennsylvania | 19107 | — |
| Wesley Headache Clinic | Cordova | Tennessee | 38018 | — |
| Baylor Research Institute | Dallas | Texas | 75231 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
Non-U.S. locations
This page focuses on the U.S. directory. The official record also lists 11 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT01516892, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jan 6, 2017 · Synced Oct 17, 2026
Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.
Open the official record
The complete public registry record, listed eligibility criteria, and available contact information for NCT01516892 live on ClinicalTrials.gov.