NCT04750226CompletedPhase 3
Study To Assess Adverse Events and Change in Disease Activity Of 24-hour Continuous Subcutaneous Infusion Of ABBV-951 In Adult Participants With Advanced Parkinson's Disease
An Open-Label Extension of Studies M15-736 and M20-339 to Evaluate the Safety and Tolerability of 24-Hour Daily Exposure of ABBV-951 in Subjects With Advanced Parkinson's Disease
Source: ClinicalTrials.gov · Last updated 1 Jun 2026
Brief summary (registry, in English)
Parkinson's disease (PD) is a neurological condition, which affects the brain. PD gets worse over time, but how quickly it progresses varies a lot from person to person. Some symptoms of PD are tremors, stiffness, and slowness of movement. This study will assess how safe and effective ABBV-951 is in adult participants with PD. Adverse events and change in disease activity is evaluated. ABBV-951 is an investigational (unapproved) drug containing Levodopa Phosphate/Carbidopa Phosphate (LDP/CDP) given as an infusion under the skin for the treatment of Parkinson's Disease. Adult participants with advanced PD and who have completed M15-736 or M20-339 study will be enrolled. Approximately 130 participants will be enrolled in the study in approximately 60 sites in the United States and Australia. Participants will receive continuous subcutaneous infusion (CSCI) (under the skin) of ABBV-951 for 96 weeks during the Primary Treatment Period and during the optional Extended Treatment Period. There may be higher treatment burden for participants in this trial compared to their standard of care. Participants will attend regular visits during the course of the study at a hospital or clinic. The effect of the treatment will be checked by medical and remote telephone assessments, blood tests, checking for side effects, and completing questionnaires.
- Status (registry)
- Completed
- Phase (registry)
- Phase 3
- Study type
- Interventional
- Enrollment
- 118 (actual)
- First submitted
- 10 Feb 2021
- Start date
- 18 Feb 2021
- Primary completion date
- 27 Apr 2026
- Lead sponsor
- AbbVie
- Diseases
- Parkinson disease
- NCT number
- NCT04750226
- EudraCT number
- 2019-004204-35
What you commit to
- Study type: Interventional · Phase 3
- Participants enrolled: 118
- From 18 Feb 2021 to the primary completion date, 27 Apr 2026
- 52 sites in 2 countries
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Other
- \- Participant considered by the investigator to be an unsuitable candidate to receive ABBV-951 for any reason.
Who the study is looking for
- \- Completion of the parent study, Study M15-736 or Study M20-339.
Age in the registry: 30 years to - · Sex: All · Does not accept healthy volunteers
Sites (52)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Royal Adelaide Hospital /ID# 218417 Coordinator of this site? Confirm its status | Adelaide | Australia | Unknown status |
| Liverpool Hospital /ID# 221693 Coordinator of this site? Confirm its status | Liverpool | Australia | Unknown status |
| The Royal Melbourne Hospital /ID# 218419 Coordinator of this site? Confirm its status | Parkville | Australia | Unknown status |
| Gold coast University Hospital /ID# 221694 Coordinator of this site? Confirm its status | Southport | Australia | Unknown status |
| Westmead Hospital /ID# 218418 Coordinator of this site? Confirm its status | Westmead | Australia | Unknown status |
| University of Colorado Hospital /ID# 218486 Coordinator of this site? Confirm its status | Aurora | United States | Unknown status |
| St. David's Healthcare Partnership, L.P., LLP /ID# 248148 Coordinator of this site? Confirm its status | Austin | United States | Unknown status |
| University of Alabama at Birmingham - Main /ID# 217814 Coordinator of this site? Confirm its status | Birmingham | United States | Unknown status |
| Alpine Clinical Research Center /ID# 218461 Coordinator of this site? Confirm its status | Boulder | United States | Unknown status |
| St Elizabeth's Medical Center - Brighton /ID# 223082 Coordinator of this site? Confirm its status | Brighton | United States | Unknown status |
| University of Chicago Medical Center /ID# 218611 Coordinator of this site? Confirm its status | Chicago | United States | Unknown status |
| Rush University Medical Center /ID# 217807 Coordinator of this site? Confirm its status | Chicago | United States | Unknown status |
| Houston Pulmonary Sleep and Allergy Associates /ID# 218473 Coordinator of this site? Confirm its status | Cypress | United States | Unknown status |
| Denver Neurological Research, LLC /ID# 217811 Coordinator of this site? Confirm its status | Denver | United States | Unknown status |
| CenExel Rocky Mountain Clinical Research, LLC /ID# 217731 Coordinator of this site? Confirm its status | Englewood | United States | Unknown status |
| KCA Neurology - Franklin /ID# 222811 Coordinator of this site? Confirm its status | Franklin | United States | Unknown status |
| Neuro Pain Research Center /ID# 217720 Coordinator of this site? Confirm its status | Fresno | United States | Unknown status |
| Texas Movement Disorder Specialists /ID# 218610 Coordinator of this site? Confirm its status | Georgetown | United States | Unknown status |
| Prisma Health-Upstate /ID# 217803 Coordinator of this site? Confirm its status | Greenville | United States | Unknown status |
| Baylor College of Medicine /ID# 217728 Coordinator of this site? Confirm its status | Houston | United States | Unknown status |
| St. Lukes Hosp. of Kansas City /ID# 218604 Coordinator of this site? Confirm its status | Kansas City | United States | Unknown status |
| Northwell Health /ID# 218600 Coordinator of this site? Confirm its status | Lake Success | United States | Unknown status |
| Global Neurosciences Institute /ID# 218472 Coordinator of this site? Confirm its status | Lawrenceville | United States | Unknown status |
| Loma Linda University Medical /ID# 217724 Coordinator of this site? Confirm its status | Loma Linda | United States | Unknown status |
| University of California, Los Angeles /ID# 218460 Coordinator of this site? Confirm its status | Los Angeles | United States | Unknown status |
| Visionary Investigators Network - Miami /ID# 217726 Coordinator of this site? Confirm its status | Miami | United States | Unknown status |
| Duplicate_Medical College of Wisconsin /ID# 217721 Coordinator of this site? Confirm its status | Milwaukee | United States | Unknown status |
| Usa Mitchell Cancer Institute /ID# 218467 Coordinator of this site? Confirm its status | Mobile | United States | Unknown status |
| Vanderbilt University Medical Center /ID# 217722 Coordinator of this site? Confirm its status | Nashville | United States | Unknown status |
| The Orthopedic Foundation /ID# 218608 Coordinator of this site? Confirm its status | New Albany | United States | Unknown status |
| Renstar Medical Research /ID# 217837 Coordinator of this site? Confirm its status | Ocala | United States | Unknown status |
| Neurology Associates Ormond Beach /ID# 217800 Coordinator of this site? Confirm its status | Ormond Beach | United States | Unknown status |
| SC3 Research Group - Pasadena /ID# 223018 Coordinator of this site? Confirm its status | Pasadena | United States | Unknown status |
| Thomas Jefferson University Hospital /ID# 218594 Coordinator of this site? Confirm its status | Philadelphia | United States | Unknown status |
| University of Pennsylvania /ID# 218605 Coordinator of this site? Confirm its status | Philadelphia | United States | Unknown status |
| Muhammad Ali Parkinson Center /ID# 218609 Coordinator of this site? Confirm its status | Phoenix | United States | Unknown status |
| Xenoscience, Inc /ID# 222515 Coordinator of this site? Confirm its status | Phoenix | United States | Unknown status |
| Parkinson's Disease Treatment Center of Southwest Florida /ID# 222679 Coordinator of this site? Confirm its status | Port Charlotte | United States | Unknown status |
| Legacy Medical Group - Neurology /ID# 217804 Coordinator of this site? Confirm its status | Portland | United States | Unknown status |
| Coastal Neurology /ID# 222893 Coordinator of this site? Confirm its status | Port Royal | United States | Unknown status |
| M3 Wake Research - Raleigh /ID# 218482 Coordinator of this site? Confirm its status | Raleigh | United States | Unknown status |
| Neurological Associates - Forest Ave /ID# 218458 Coordinator of this site? Confirm its status | Richmond | United States | Unknown status |
| University of Utah Health Care /ID# 218597 Coordinator of this site? Confirm its status | Salt Lake City | United States | Unknown status |
| University of California, San /ID# 218595 Coordinator of this site? Confirm its status | San Diego | United States | Unknown status |
| Movement Disorders Center of Arizona /ID# 218471 Coordinator of this site? Confirm its status | Scottsdale | United States | Unknown status |
| Inland Northwest Research /ID# 222520 Coordinator of this site? Confirm its status | Spokane | United States | Unknown status |
| Washington University-School of Medicine /ID# 217723 Coordinator of this site? Confirm its status | St Louis | United States | Unknown status |
| University of South Florida- Neuroscience Institute /ID# 218481 Coordinator of this site? Confirm its status | Tampa | United States | Unknown status |
| The Movement Disorder Clinic of Oklahoma /ID# 218580 Coordinator of this site? Confirm its status | Tulsa | United States | Unknown status |
| Georgetown University Hospital /ID# 218599 Coordinator of this site? Confirm its status | Washington D.C. | United States | Unknown status |
| Duplicate_Cedars-Sinai Medical Center-West Hollywood /ID# 218607 Coordinator of this site? Confirm its status | West Hollywood | United States | Unknown status |
| Premiere Research Institute - Palm Beach /ID# 218743 Coordinator of this site? Confirm its status | West Palm Beach | United States | Unknown status |
This page is information, not medical advice. Discuss any trial with your doctor.