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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
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

Full criteria on ClinicalTrials.gov

Sites (52)

Sites in registry order. Pick your city on the disease page to sort them by distance.

SiteCityCountrySite status
Royal Adelaide Hospital /ID# 218417
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AdelaideAustraliaUnknown status
Liverpool Hospital /ID# 221693
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LiverpoolAustraliaUnknown status
The Royal Melbourne Hospital /ID# 218419
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ParkvilleAustraliaUnknown status
Gold coast University Hospital /ID# 221694
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SouthportAustraliaUnknown status
Westmead Hospital /ID# 218418
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WestmeadAustraliaUnknown status
University of Colorado Hospital /ID# 218486
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AuroraUnited StatesUnknown status
St. David's Healthcare Partnership, L.P., LLP /ID# 248148
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AustinUnited StatesUnknown status
University of Alabama at Birmingham - Main /ID# 217814
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BirminghamUnited StatesUnknown status
Alpine Clinical Research Center /ID# 218461
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BoulderUnited StatesUnknown status
St Elizabeth's Medical Center - Brighton /ID# 223082
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BrightonUnited StatesUnknown status
University of Chicago Medical Center /ID# 218611
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ChicagoUnited StatesUnknown status
Rush University Medical Center /ID# 217807
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ChicagoUnited StatesUnknown status
Houston Pulmonary Sleep and Allergy Associates /ID# 218473
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CypressUnited StatesUnknown status
Denver Neurological Research, LLC /ID# 217811
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DenverUnited StatesUnknown status
CenExel Rocky Mountain Clinical Research, LLC /ID# 217731
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EnglewoodUnited StatesUnknown status
KCA Neurology - Franklin /ID# 222811
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FranklinUnited StatesUnknown status
Neuro Pain Research Center /ID# 217720
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FresnoUnited StatesUnknown status
Texas Movement Disorder Specialists /ID# 218610
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GeorgetownUnited StatesUnknown status
Prisma Health-Upstate /ID# 217803
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GreenvilleUnited StatesUnknown status
Baylor College of Medicine /ID# 217728
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HoustonUnited StatesUnknown status
St. Lukes Hosp. of Kansas City /ID# 218604
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Kansas CityUnited StatesUnknown status
Northwell Health /ID# 218600
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Lake SuccessUnited StatesUnknown status
Global Neurosciences Institute /ID# 218472
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LawrencevilleUnited StatesUnknown status
Loma Linda University Medical /ID# 217724
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Loma LindaUnited StatesUnknown status
University of California, Los Angeles /ID# 218460
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Los AngelesUnited StatesUnknown status
Visionary Investigators Network - Miami /ID# 217726
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MiamiUnited StatesUnknown status
Duplicate_Medical College of Wisconsin /ID# 217721
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MilwaukeeUnited StatesUnknown status
Usa Mitchell Cancer Institute /ID# 218467
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MobileUnited StatesUnknown status
Vanderbilt University Medical Center /ID# 217722
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NashvilleUnited StatesUnknown status
The Orthopedic Foundation /ID# 218608
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New AlbanyUnited StatesUnknown status
Renstar Medical Research /ID# 217837
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OcalaUnited StatesUnknown status
Neurology Associates Ormond Beach /ID# 217800
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Ormond BeachUnited StatesUnknown status
SC3 Research Group - Pasadena /ID# 223018
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PasadenaUnited StatesUnknown status
Thomas Jefferson University Hospital /ID# 218594
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PhiladelphiaUnited StatesUnknown status
University of Pennsylvania /ID# 218605
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PhiladelphiaUnited StatesUnknown status
Muhammad Ali Parkinson Center /ID# 218609
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PhoenixUnited StatesUnknown status
Xenoscience, Inc /ID# 222515
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PhoenixUnited StatesUnknown status
Parkinson's Disease Treatment Center of Southwest Florida /ID# 222679
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Port CharlotteUnited StatesUnknown status
Legacy Medical Group - Neurology /ID# 217804
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PortlandUnited StatesUnknown status
Coastal Neurology /ID# 222893
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Port RoyalUnited StatesUnknown status
M3 Wake Research - Raleigh /ID# 218482
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RaleighUnited StatesUnknown status
Neurological Associates - Forest Ave /ID# 218458
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RichmondUnited StatesUnknown status
University of Utah Health Care /ID# 218597
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Salt Lake CityUnited StatesUnknown status
University of California, San /ID# 218595
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San DiegoUnited StatesUnknown status
Movement Disorders Center of Arizona /ID# 218471
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ScottsdaleUnited StatesUnknown status
Inland Northwest Research /ID# 222520
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SpokaneUnited StatesUnknown status
Washington University-School of Medicine /ID# 217723
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St LouisUnited StatesUnknown status
University of South Florida- Neuroscience Institute /ID# 218481
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TampaUnited StatesUnknown status
The Movement Disorder Clinic of Oklahoma /ID# 218580
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TulsaUnited StatesUnknown status
Georgetown University Hospital /ID# 218599
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Washington D.C.United StatesUnknown status
Duplicate_Cedars-Sinai Medical Center-West Hollywood /ID# 218607
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West HollywoodUnited StatesUnknown status
Premiere Research Institute - Palm Beach /ID# 218743
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West Palm BeachUnited StatesUnknown status

This page is information, not medical advice. Discuss any trial with your doctor.