A Study to Learn About the Safety of BIIB122 Tablets and Whether They Can Slow the Worsening of Early-Stage Parkinson's Disease in Adults Between the Ages of 30 and 80

Klinik Ottakring, Vienna

Medizinische Universität, Innsbruck

Hospital Clinic de Barcelona, Barcelona

Mount Sinai Beth Israel, New York

Weill Medical College of Cornell University, New York

Hôpital de la Timone, Marseille

Complejo Hospitalario Universitario A Coruña, A Coruña

UPHS, Philadelphia

Policlinica Gipuzkoa, Donostia / San Sebastian

Fondazione, Milan

Ospedale San Raffaele, Milan

Virginia Commonwealth University Department of Neurology, Richmond

Universitaetsklinikum Schleswig-Holstein - Campus Luebeck, Lübeck

Azienda Ospedaliera Spedali, Brescia

Duke Movement Disorders Clinic, Durham

Hospital Universitario de La Princesa, Madrid

Medical University of South Carolina, Charleston

Medizinische Hochschule Hannover, Hanover

Clinica Universidad de Navarra, Pamplona

Hopital Purpan, Toulouse

Adventist Health System/Sunbelt, Inc., Orlando

University of Miami, Miami

Parkinson's Disease and Movement Disorders Center of Boca Raton, Boca Raton

USF Health Byrd Institute, Tampa

Paracelsus-Elena-Klinik Kassel, Kassel

Hopital Gui de Chauliac, Montpellier

CHU Rennes - Hopital Pontchaillou, Rennes

Philipps University of Marburg, Marburg

Hospital Universitario Marques, Santanda

Neurology Clinic, PC, Cordova

IRCCS-Institute of Neurological Sciences of Bologna, Bologna

Universitaetsklinikum Duesseldorf AoeR, Düsseldorf

Hospital Universitario Virgen del Rocio, Seville

CHU Nantes - Hopital Nord Laën, Loire-Atlantique

The Cleveland Clinic Foundation, Cleveland

Katholisches Klinikum Bochum gGmbH, Bochum

Quest Research Institute, Farmington Hills

Hospital de Cruces, Barakaldo

AO Universitaria Pisana, Pisa

Northwestern University, Chicago

Rush University Medical Center, Chicago

CHU Clermont Ferrand - Hopital Gabriel Montpied, Clermont-Ferrand

Ospedale Clinicizzato SS. Annu, Chieti

University of Kansas Medical Center Research Institute, Inc., Kansas City

Centre Hospitalier Universitaire de Lyon-Hospices Civils de Lyon-Hopital Pierre Wertheimer, Bron

Universitaetsklinikum Tuebingen, Tübingen

Groupe Hospitalier Pitie-Salpetriere, Paris

The Methodist Hospital Research Institute, Houston

Central Texas Neurology Consultants, Round Rock

University of Colorado, Aurora

CenExel Rocky Mountain Clinical Research, Englewood

AOU Luigi Vanvitelli, Napoli

Klinikum der Universität München, Munich

Klinikum rechts der Isar der TU Muenchen, Munich

Mayo Clinic Arizona, Phoenix

Banner Sun Health Research Institute, Sun City

I.R.C.C.S. Neuromed, Diego

Universitaetsklinikum Ulm, Ulm

University of Southern California, Los Angeles

Cedars Sinai, Los Angeles

SC3 Research Group Inc., Pasadena

Hopital Henri Mondor, Paris

University of California San Francisco (UCSF), San Francisco

Azienda Ospedaliero Universitaria Policlinico 'Gaspare Rodolico - San Marco' (Presidio G. Rodolico), Catania

Hawaii Pacific Neuroscience, LLC, Honolulu

Universitaetsklinikum Wuerzburg, Würzburg

Evergreen Hospital Medical Center, Kirkland

Inland Northwest Research, Spokane

Xuanwu Hospital Capital Medical University, Beijing

Beijing Hospital, Beijing

Second Affiliated Hospital of Soochow University, Jiangsu

West China Hospital, Sichuan University, Chengdu

Rabin Medical Center, Petah Tikva

Center Chaim Sheba Medical Center, Ramat Gan

Tel Aviv Sourasky Medical Center, Tel Aviv

Invicro, New Haven

Boston University Medical Center, Boston

Beth Israel Deaconess Medical Center, Boston

Massachusetts General Hospital, Boston

University of Calgary, Calgary

True North Clinical Research, Halifax

Toronto Western Hospital, Toronto

CHUM Centre de Recherche, Montreal

Montreal Neurological Institute, Montreal

Universitaetsklinikum Carl Gustav Carus TU Dresden, Dresden

IRCCS San Raffaele Pisana, Roma

Okinawa Prefectural Nanbu, Haeburu

Tazuke-kofukai Medical Research Institute Kitano Hospital, Osaka

NHO Asahikawa Medical Center, Asahikawa-shi

Himeji Central, Himeji-shi

Sendai Nishitaga National Hospital, Sendai

Juntendo University, Tokyo

Brain Research Center Amsterdam, Amsterdam

Radboudumc, Nijmegen

Brain Research Center Zwolle B.V., Zwolle

Instytut Zdrowia dr Boczarska-Jedynak sp.z.o.o, Sp.K, Oświęcim

NeuroProtect Sp. z o.o., Warsaw

Centrum Medyczne Neuromed, Bydgoszcz

Nzoz Novo-Med, Katowice

INSULA Centrum Badan Klinicznych, Warsaw

MD Clinic Praga, Warsaw

Hospital General de Catalunya, Sant Cugat del Vallès

Hospital Universitari Vall d'Hebron, Barcelona

Hospital de la Santa Creu i Sant Pau, Barcelona

University Hospitals Plymouth, Plymouth

Re:Cognition Health Ltd (London), London

Charing Cross Hospital, London

The National Hospital for Neurology & Neurosurgery, London

Salford Royal NHS Foundation Trust, Salford

NeuroClin Limited, Motherwell

Newcastle University, Newcastle upon Tyne

Re:Cognition Health - Birmingham, Birmingham

Ninewells Hospital, Dundee