New pill aims to cut Parkinson's 'OFF' time in major trial
NCT ID NCT06553027
First seen Nov 01, 2025 · Last updated May 15, 2026 · Updated 25 times
Summary
This Phase 3 study tests an experimental oral drug, CVN424, in 330 people with Parkinson's disease who experience motor complications (fluctuations between 'ON' and 'OFF' periods). Participants take either a low or high dose of CVN424 or a placebo daily for 12 weeks. The main goal is to see if the drug reduces daily 'OFF' time (when symptoms return) and increases 'ON' time without troublesome involuntary movements.
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Contacts and locations
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Locations
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Atlanta Neuroscience Institute
Atlanta, Georgia, 30327, United States
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Axon Clinical s.r.o.
Prague, Prague, 150 06, Czechia
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Azienda Ospedale Università di Padova
Padova, Padua, 35128, Italy
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Barrow Neurological Institute
Phoenix, Arizona, 85013, United States
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Boro Neurology
Hopewell, New Jersey, 08525, United States
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Boston Clinical Trials
Boston, Massachusetts, 02131, United States
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CenExel Rocky Mountain Clinical Research
Englewood, Colorado, 80113, United States
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Central Texas Neurology Consultants
Round Rock, Texas, 78681, United States
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Centrum Zdrowia i Urody MAXXMED
Lublin, Lublin Voivodeship, 20-080, Poland
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David and Rhoda Chase Family Movement Disorders Center - Vernon
Vernon, Connecticut, 06066, United States
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Duke Neurology Morreene Road Clinic
Durham, North Carolina, 27705, United States
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ETG Neuroscience Sp. z o. o
Warsaw, Masovian Voivodeship, 02-677, Poland
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EvergreenHealth Research Department
Kirkland, Washington, 98034, United States
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Fakultní Nemocnice u sv. Anny v Brně
Brno, South Moravian, 656 91, Czechia
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Gill Neuroscience
Houston, Texas, 77065, United States
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Global Neurosciences Institute at Pennington
Pennington, New Jersey, 08534, United States
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Henrico Doctors Neurology Associates, LLC
Richmond, Virginia, 23229, United States
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Horizon Clinical Research Group
Cypress, Texas, 77429, United States
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Hospital Clinic de Barcelona
Barcelona, 08036, Spain
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Hospital Universitari General de Catalunya
Sant Cugat del Vallès, Barcelona, 08190, Spain
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Hospital Universitari i Politècnic La Fe
Valencia, Valenciana, Comunidad, 46026, Spain
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Hospital Universitario Cruces
Barakaldo, Biscay, 48903, Spain
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Hospital Universitario Virgen del Rocío
Seville, Andalusia, 41013, Spain
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Hospital Universitario de La Princesa
Madrid, 28006, Spain
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Hospital de la Santa Creu i Sant Pau
Barcelona, 08041, Spain
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Houston Methodist Neurological Institute
Houston, Texas, 77030, United States
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Hôpital Gui de Chauliac
Montpellier, Hérault, 34295, France
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Hôpital Pierre Wertheimer
Bron, Auvergne-Rhône-Alpes, 69500, France
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Hôpital Pierre-Paul Riquet
Toulouse, Haute-Garonne, 31059, France
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Hôpital Roger Salengro
Lille, Nord, 59037, France
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Hôpitaux Universitaires Henri Mondor
Créteil, Val-De-Marne, 94010, France
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Inland Northwest Research
Spokane, Washington, 99202, United States
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Inova Fairfax Medical Campus
Falls Church, Virginia, 22042, United States
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Inova Neurology - Fairfax
Fairfax, Virginia, 22031, United States
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Inova Parkinson's and Movement Disorders Center - Alexandria
Alexandria, Virginia, 22311, United States
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Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) - San Raffaele Pisana
Rome, 00163, Italy
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K2 Medical Research
Maitland, Florida, 32751, United States
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King's College Hospital NHS Foundation Trust
London, SE5 9RS, United Kingdom
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Medical College of Wisconsin-Department of Neurology
Milwaukee, Wisconsin, 53226, United States
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Medical University of South Carolina
Charleston, South Carolina, 29425, United States
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Monash Health
Cheltenham, Victoria, VIC 3192, Australia
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Muhammad Ali Parkinson Center
Phoenix, Arizona, 85013, United States
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N1 Research LLc
Orlando, Florida, 32825, United States
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Nemocnice Pardubického kraje, a.s. - Pardubická nemocnice
Pardubičky, Pardubice, 530 03, Czechia
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Neuro-Care Centrum Medyczne
Katowice, Silesian Voivodeship, 40-001, Poland
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Neurologia Śląska Centrum Medyczne
Katowice, Silesian Voivodeship, 40-123, Poland
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Neurologie Taláb Radomír Doc. MUDr., CSc
Hradec Králové, 500 03, Czechia
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Newcastle Upon Tyne Hospitals NHS Foundation Trust
Newcastle upon Tyne, England, NE4 5PL, United Kingdom
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Northern Care Alliance NHS Foundation Trust
Bury, BL9 7TD, United Kingdom
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Oregon Health and Science University
Portland, Oregon, 97239, United States
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Parkinson's Disease Center of SWFL
Port Charlotte, Florida, 33980, United States
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Parkinson's Disease and Movement Disorders Center of Boca Raton
Boca Raton, Florida, 33486, United States
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Parkinson's Research Centers of America - Long Island
Commack, New York, 11725, United States
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Parkinson's Research Centers of America - Orange County
Newport Beach, California, 92663, United States
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Parkinson's Research Centers of America - Orange county
Aliso Viejo, California, 92656, United States
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Parkinson's Research Centers of America - Palo Alto
Palo Alto, California, 94301, United States
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Perron Institute for Neurological and Translational Science
Nedlands, Western Australia, WA 6009, Australia
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Policlínica Gipuzkoa
San Sebastián, Gipuzkoa, 20014, Spain
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Praglandia s.r.o.
Prague, Prague, 150 00, Czechia
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Princess Alexandra Hospital
Woolloongabba, Queensland, QLD 4102, Australia
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Quest Research Institute
Farmington Hills, Michigan, 48334, United States
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Raleigh Neurology Associates
Raleigh, North Carolina, 27607, United States
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Renstar Medical Research
Ocala, Florida, 34471, United States
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Riverhills Healthcare, Inc dba Riverhills Neuroscience
Cincinnati, Ohio, 45212, United States
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SFM Clinical Research, LLC
Boca Raton, Florida, 33487, United States
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San Raffaele Cassino
Cassino, Frosinone, 03043, Italy
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Southern Neurology
Kogarah, New South Wales, NSW 2217, Australia
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St Vincent's Hospital Sydney
Darlinghurst, New South Wales, NSW 2010, Australia
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St. Joseph's Hospital and Medical Center
Phoenix, Arizona, 85013, United States
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Texas Movement Disorder Specialists, PLLC
Georgetown, Texas, 78628, United States
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The Alfred
Melbourne, Victoria, VIC 3004, Australia
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The Alliance Hispanic Alliance for Clinical and Translational Research
Rio Piedras, 00935, Puerto Rico
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The Kirklin Clinic of UAB Hospital
Birmingham, Alabama, 35233, United States
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The Movement Disorder Clinic of Oklahoma
Tulsa, Oklahoma, 74136, United States
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The Neurological Institute
Charlotte, North Carolina, 28204, United States
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The Ohio State University - Martha Morehouse Medical Plaza
Columbus, Ohio, 43221, United States
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The Ohio State University Wexner Medical Center
Columbus, Ohio, 43210, United States
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USF Parkinson's Disease and Movement Disorders Center
Tampa, Florida, 33613, United States
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Universidad de Puerto Rico Recinto de Ciencias Médicas
San Juan, 00936-5067, Puerto Rico
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University Clinical Research-DeLand, LLC d/b/a Accel Research Sites - Brain & Spine Institute
Port Orange, Florida, 32127, United States
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University Hospitals Plymouth NHS Trust
Plymouth, PL6 8BU, United Kingdom
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University of Alabama at Birmingham
Birmingham, Alabama, 35233, United States
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University of Alabama at Birmingham ALS Clinic
Birmingham, Alabama, 35294, United States
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University of Kansas Medical Center
Kansas City, Kansas, 66160, United States
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University of Kentucky, Dept of Neurology Kentucky Neuroscience Institute Research
Lexington, Kentucky, 40536, United States
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University of Michigan Dept. of Neurology
Ann Arbor, Michigan, 48109, United States
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University of Michigan Hospital - Michigan Clinical Research Unit (MCRU)
Ann Arbor, Michigan, 48109, United States
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Velocity Clinical Research
Raleigh, North Carolina, 27607, United States
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Veracity Neuroscience LLC
Memphis, Tennessee, 38157, United States
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Vseobecna Fakultni Nemocnice v Praze
Prague, Prague, 128 08, Czechia
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Vseobecna Fakultni Nemocnice v Praze
Prague, 120 00, Czechia
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Weill Cornell Medical College
New York, New York, 10021, United States
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Westmead Hospital-Department of Neurology
Sydney, New South Wales, NSW 2145, Australia
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Wielospecjalistyczna Poradnia Lekarska Synapsis
Katowice, Silesian Voivodeship, 40-123, Poland
Conditions
Explore the condition pages connected to this study.