Safety and Efficacy of Eculizumab in Refractory Generalized Myasthenia Gravis (REGAIN Study)
A Randomized, Double-Blind, Placebo-Controlled, Multi-Center Study to Evaluate the Safety and Efficacy of Eculizumab in Subjects With Refractory Generalized Myasthenia Gravis (gMG)
Study Overview
Status
Status
Conditions
Conditions
Intervention / Treatment
Intervention / Treatment
Study Type
Study Type
Enrollment (Actual)
Enrollment
Phase
Phase
- Phase 3
Contacts and Locations
Study Locations
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Buenos Aires
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Ciudad Autonoma, Buenos Aires, Argentina, 1181
- Hospital Italiano
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Ciudad Autonoma, Buenos Aires, Argentina, C1428AQK
- Instituto de Investigaciones Neurologicas Raul Carrea, FLENI
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Victoria
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Fitzroy, Victoria, Australia, 3065
- St Vincent's Hospital Melbourne
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Western Australia
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Perth, Western Australia, Australia, 6000
- Royal Perth Hospital
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Edegem, Belgium, 2650
- UZ Antwerpen
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Gent, Belgium, 9000
- AZ Sint-Lucas - Campus Sint-Lucas
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Leuven, Belgium, 3000
- UZ Leuven
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Rio De Janeiro, Brazil, 21941-913
- HUCFF-UFRJ - Hospital Universitario Clementino Fraga Filho - Universidade Federal do Rio de Janeiro
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São Paulo, Brazil, 04037-002
- UNIFESP - Universidade Federal de São Paulo
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Rio Grande Do Sul
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Porto Alegre, Rio Grande Do Sul, Brazil, 90110-270
- Hospital Mae de Deus
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Sao Paulo
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Santo André, Sao Paulo, Brazil, Postal Code: 09060-650
- Faculdade de Medicina do ABC
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São José do Rio Preto, Sao Paulo, Brazil, 15090-000
- Fundação Faculdade Regional de Medicina de São José do Rio Preto
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Alberta
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Edmonton, Alberta, Canada, T6G 2B7
- University of Alberta Hospital
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Ontario
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Toronto, Ontario, Canada, M5G 2C4
- Toronto General Hospital
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Quebec
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Montreal, Quebec, Canada, H3A 2B4
- Montreal Neurological Institute
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Brno, Czechia, 625 00
- Fakultní Nemocnice Brno
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Ostrava - Poruba, Czechia, 708 52
- Fakultni nemocnice Ostrava
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Prague
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Praha, Prague, Czechia, 120 00
- Vseobecna fakultni nemocnice v Praze
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Aarhus C, Denmark, 8000
- Århus Universitetshospital
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København Ø, Denmark, 2100
- Rigshospitalet
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Helsinki, Finland, 00290
- Helsingin yliopistollinen keskussairaala
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Turku, Finland, 20520
- Neuro NEO Oy
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Alpes Maritimes
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Nice Cedex 3, Alpes Maritimes, France, 06202
- CHU de NICE HÔPITAL PASTEUR 2
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Gironde
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Bordeaux Cedex, Gironde, France, 33000
- Groupe Hospitalier Pellegrin - Hôpital Pellegrin
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Nord
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Lille Cedex, Nord, France, 59037
- Hopital Roger Salengro - CHU Lille
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Rhone
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Bron cedex, Rhone, France, 69677
- Hôpital Neurologique Pierre Wertheimer
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Bayern
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Muenchen, Bayern, Germany, 80336
- LMU-Campus Innenstadt
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Niedersachsen
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Hannover, Niedersachsen, Germany, 30625
- Medizinische Hochschule Hannover
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Athens, Greece, 11521
- Navy Hospital of Athens
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Thessaloniki, Greece, 57010
- General Hospital of Thessaloniki "G. Papanikolaou"
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Budapest, Hungary, 1204
- Jahn Ferenc Dél-Pesti Kórház
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Szeged, Hungary, 6725
- Szegedi Tud.Egyetem Szent-Gyorgyi Albert Klin. Kozp.
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Catania, Italy, 95123
- Policlinico di Catania
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Milano, Italy, 20133
- Fondazione IRCCS Istituto Neurologico Carlo Besta
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Napoli, Italy, 80131
- Azienda Ospedaliera Universitaria "Federico II"
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Padova, Italy, 35128
- Ospedale San Camillo IRCCS
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Pisa, Italy, 56126
- Azienda Ospedaliero Universitaria Pisana
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Roma, Italy, 00168
- Policlinico Universitario Agostino Gemelli
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Roma, Italy, 00161
- Umberto I Pol. di Roma-Università di Roma La Sapienza
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Roma, Italy, 00189
- Azienda Ospedaliera Sant'Andrea - Universita di Roma La Sapienza
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Trento, Italy, 38122
- Ospedale Santa Chiara
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Chiba-Ken
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Chiba-shi, Chiba-Ken, Japan, 260-8677
- Chiba University Hospital
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Fukuoka-Ken
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Fukuoka-shi, Fukuoka-Ken, Japan, 812-8582
- Kyushu University Hospital
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Hokkaido
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Sapporo-shi, Hokkaido, Japan, 060-8543
- Sapporo Medical University Hospital
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Iwate-Ken
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Hanamaki-shi, Iwate-Ken, Japan, 025-0075
- Hanamaki General Hospitals
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Miyagi-Ken
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Sendai-shi, Miyagi-Ken, Japan, 983-8520
- NHO Sendai Medical Center
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Nagasaki-Ken
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Kawatana, Nagasaki-Ken, Japan, 859-3615
- NHO Nagasaki Kawatana Medical Center
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Nagasaki-shi, Nagasaki-Ken, Japan, 852-8501
- Nagasaki University Hospital
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Osaka-Fu
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Osakasayama-shi, Osaka-Fu, Japan, 589-8511
- Kinki University Hospital
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Suita-shi, Osaka-Fu, Japan, 565-0871
- Osaka University Hospital
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Tokyo-To
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Meguro-ku, Tokyo-To, Japan, 153-8515
- Toho University Ohashi Medical Center
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Yamaguchi-Ken
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Ube-shi, Yamaguchi-Ken, Japan, 755-8505
- Yamaguchi University Hospital
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Seoul, Korea, Republic of, 135-710
- Samsung Medical Center
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Seoul, Korea, Republic of, 136-705
- Korea University Anam Hospital
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Seoul, Korea, Republic of, 120-752
- Severance Hospital, Yonsei University Health System
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Seoul, Korea, Republic of, 156707
- Seoul Metropolitan Government Seoul National University
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Amsterdam, Netherlands, 1105 AZ
- Academisch Medisch Centrum
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Leiden, Netherlands, 2333 ZA
- Leiden Universitair Medisch Centrum
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Maastricht, Netherlands, 6229 HX
- Maastricht University Medical Center
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Barcelona, Spain, 08035
- Hospital Universitari Vall d'Hebron
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Barcelona, Spain, 08041
- Hospital De La Santa Creu I Sant Pau
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Barcelona, Spain, 08907
- Hospital Universitari de Bellvitge
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Madrid, Spain, 28046
- Hospital Universitario La Paz
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Göteborg, Sweden, 41345
- Sahlgrenska Sjukhuset
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Stockholm, Sweden, 17176
- Karolinska Universitetssjukhuset - Solna
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Ankara, Turkey, 06100
- Hacettepe University Medical Faculty
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Istanbul, Turkey, 61080
- Karadeniz Tecnical Uni. Med. Fac.
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Izmir, Turkey, 35340
- Dokuz Eylul University Medicine Faculty
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Kocaeli, Turkey, 41380
- Kocaeli University Medical Faculty
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Samsun, Turkey, 55139
- Ondokuz Mayıs University of Medicine
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London, United Kingdom, SE5 9NU
- King's College Hospital
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Merseyside
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Liverpool, Merseyside, United Kingdom, L9 7LJ
- The Walton Centre
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West Midlands
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Birmingham, West Midlands, United Kingdom, B15 2WB
- Queen Elizabeth Hospital
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Alabama
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Birmingham, Alabama, United States, 35233
- University of Alabama
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California
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Fresno, California, United States, 93720
- University of California San Francisco-Fresno
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Los Angeles, California, United States, 90033
- University of Southern California
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Orange, California, United States, 92868
- University of California-Irvine
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Sacramento, California, United States, 95765
- University Of California Davis Health System
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San Francisco, California, United States, 94115
- California Pacific Medical Center
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Stanford, California, United States, 94305
- Stanford University School of Medicine
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Connecticut
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New Haven, Connecticut, United States, 06510
- Yale New Haven Hospital
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Florida
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Jacksonville, Florida, United States, 32209
- University of Florida Health Science Center
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Miami, Florida, United States, 33136
- University of Miami School of Medicine
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Tampa, Florida, United States, 33612
- University of South Florida
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Georgia
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Augusta, Georgia, United States, 30912
- Georgia Regents University
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Canton, Georgia, United States, 30114
- Medical Associates of North Georgia
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Illinois
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Springfield, Illinois, United States, 62702
- Southern Illinois University School of Medicine
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Indiana
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Indianapolis, Indiana, United States, 46202
- Indiana University
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Iowa
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Iowa City, Iowa, United States, 52242
- University of Iowa College of Medicine
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Kansas
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Kansas City, Kansas, United States, 66160
- University of Kansas Medical Center
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Maryland
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Baltimore, Maryland, United States, 21201
- University of Maryland Medical Center
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Baltimore, Maryland, United States, 21287-0876
- Johns Hopkins University School of Medicine
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Massachusetts
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Boston, Massachusetts, United States, 02115
- Brigham and Women's Hospital
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Boston, Massachusetts, United States, 02114
- Massachusetts General Hospital
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Burlington, Massachusetts, United States, 01805
- Lahey Clinic Inc.
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Michigan
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Detroit, Michigan, United States, 48201
- Wayne State University School of Medicine
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Nevada
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Las Vegas, Nevada, United States, 89145
- Las Vegas Clinic
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New York
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Buffalo, New York, United States, 14203
- Buffalo General Hospital
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New York, New York, United States, 10029
- Mount Sinai School of Medicine
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New York, New York, United States, 10021
- Hospital For Special Surgery/New York Presbyterian Hospital Cornell Campus
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North Carolina
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Chapel Hill, North Carolina, United States, 27599
- University of North Carolina at Chapel Hill
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Charlotte, North Carolina, United States, 28207
- Carolinas Healthcare System
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Durham, North Carolina, United States, 27705
- Duke University Health System
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Ohio
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Columbus, Ohio, United States, 43210
- Ohio State University Medical Center
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Oregon
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Portland, Oregon, United States, 97239
- Oregon Health & Science University
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Pennsylvania
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Philadelphia, Pennsylvania, United States, 19104
- University of Pennsylvania
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Rhode Island
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Providence, Rhode Island, United States, 02905
- Rhode Island Hospital
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Tennessee
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Cordova, Tennessee, United States, 38018
- Wesley Neurology Clinic
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Nashville, Tennessee, United States, 37232
- Vanderbilt Medical Center
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Texas
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Dallas, Texas, United States, 75390
- UT Southwestern
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Houston, Texas, United States, 77030
- Methodist Neurological Institute
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San Antonio, Texas, United States, 78229
- University of Texas Health Science Center at San Antonio
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Vermont
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Burlington, Vermont, United States, 05405
- University of Vermont Medical Center
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Washington
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Seattle, Washington, United States, 98195
- University of Washington
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Participation Criteria
Eligibility Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Key Inclusion Criteria:
- Male or female patients ≥18 years old
Diagnosis of MG made by the following tests:
- Positive serologic test for anti-AChR Abs as confirmed at screening, and
One of the following:
- History of abnormal neuromuscular transmission test demonstrated by single-fiber electromyography (SFEMG) or repetitive nerve stimulation, or
- History of positive anticholinesterase test, e.g. edrophonium chloride test, or
- Subject has demonstrated improvement in MG signs on oral cholinesterase inhibitors, as assessed by the treating physician.
- MGFA Clinical Classification Class II to IV at screening.
- MG-ADL total score must be ≥6 at screening and Randomization (Day 1).
Subjects who have:
- Failed treatment with at least two immunosuppressive agents. Or,
- Failed treatment with at least one immunosuppressive agent and require chronic plasma exchange or IVIg
Key Exclusion Criteria:
- History of thymoma or other neoplasms of the thymus
- History of thymectomy within 12 months prior to screening
- MGFA Class I or MG crisis at screening (MGFA Class V)
- Use of rituximab within 6 months prior to screening
- Use of IVIg or PE within 4 weeks prior to Randomization (Day 1)
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Quadruple
Number of Arms
Arms and Interventions
Participant Group / ArmParticipant Group / Arm |
Intervention / TreatmentIntervention / Treatment |
|---|---|
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Experimental: Eculizumab
Biological/Vaccine: Eculizumab; Induction phase: 3 vials of study drug (equivalent to 900 mg of eculizumab) weekly for 4 doses (every 7 days ± 2 days) followed by 4 vials of study drug (equivalent to 1200 mg of eculizumab) 1 week later for the fifth dose (Week 4); Maintenance phase: 4 vials of study drug (equivalent to 1200 mg of eculizumab) every 2 weeks (14 days ± 2 days) from the fifth dose onwards (Week 6 through Week 26).
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Induction Phase: 900 mg IV weekly X 4 Maintenance Phase: 1200 mg IV every 2 weeks during Weeks 4-26
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Placebo Comparator: Placebo
Placebo contains the same buffer components without the active ingredient; Induction phase: 3 vials of study drug (placebo) weekly for 4 doses (every 7 days ± 2 days) followed by 4 vials of study drug (placebo) 1 week later for the fifth dose (Week 4); Maintenance phase: 4 vials of study drug (placebo) every 2 weeks (14 days ± 2 days) from the fifth dose onwards (Week 6 through Week 26).
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Placebo
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What is the study measuring?
Primary Outcome Measures
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
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Myasthenia Gravis Activities of Daily Living Profile (MG-ADL): Change From Baseline in MG-ADL Total Score at Week 26 by Worst-Rank Analysis of Covariance (ANCOVA)
Time Frame: End of study (Week 26)
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In the Worst-Rank analysis, the 125 total patients were ranked from best outcome (rank/score of 1) to worst outcome (rank/score of 125).
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End of study (Week 26)
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Collaborators and Investigators
Sponsor
Sponsor
Publications and helpful links
General Publications
- Howard JF Jr, Barohn RJ, Cutter GR, Freimer M, Juel VC, Mozaffar T, Mellion ML, Benatar MG, Farrugia ME, Wang JJ, Malhotra SS, Kissel JT; MG Study Group. A randomized, double-blind, placebo-controlled phase II study of eculizumab in patients with refractory generalized myasthenia gravis. Muscle Nerve. 2013 Jul;48(1):76-84. doi: 10.1002/mus.23839. Epub 2013 Apr 30.
- Howard JF Jr, Utsugisawa K, Benatar M, Murai H, Barohn RJ, Illa I, Jacob S, Vissing J, Burns TM, Kissel JT, Muppidi S, Nowak RJ, O'Brien F, Wang JJ, Mantegazza R; REGAIN Study Group. Safety and efficacy of eculizumab in anti-acetylcholine receptor antibody-positive refractory generalised myasthenia gravis (REGAIN): a phase 3, randomised, double-blind, placebo-controlled, multicentre study. Lancet Neurol. 2017 Dec;16(12):976-986. doi: 10.1016/S1474-4422(17)30369-1. Epub 2017 Oct 20. Erratum In: Lancet Neurol. 2017 Dec;16(12 ):954.
- Monteleone JPR, Gao X, Kleijn HJ, Bellanti F, Pelto R. Eculizumab Pharmacokinetics and Pharmacodynamics in Patients With Generalized Myasthenia Gravis. Front Neurol. 2021 Nov 2;12:696385. doi: 10.3389/fneur.2021.696385. eCollection 2021.
- Siddiqi ZA, Nowak RJ, Mozaffar T, O'Brien F, Yountz M, Patti F; REGAIN Study Group. Eculizumab in refractory generalized myasthenia gravis previously treated with rituximab: subgroup analysis of REGAIN and its extension study. Muscle Nerve. 2021 Dec;64(6):662-669. doi: 10.1002/mus.27422. Epub 2021 Oct 14.
- Nowak RJ, Muppidi S, Beydoun SR, O'Brien FL, Yountz M, Howard JF Jr. Concomitant Immunosuppressive Therapy Use in Eculizumab-Treated Adults With Generalized Myasthenia Gravis During the REGAIN Open-Label Extension Study. Front Neurol. 2020 Nov 24;11:556104. doi: 10.3389/fneur.2020.556104. eCollection 2020.
- Mantegazza R, Wolfe GI, Muppidi S, Wiendl H, Fujita KP, O'Brien FL, Booth HDE, Howard JF Jr; REGAIN Study Group. Post-intervention Status in Patients With Refractory Myasthenia Gravis Treated With Eculizumab During REGAIN and Its Open-Label Extension. Neurology. 2021 Jan 26;96(4):e610-e618. doi: 10.1212/WNL.0000000000011207. Epub 2020 Nov 23.
- Mantegazza R, O'Brien FL, Yountz M, Howard JF Jr; REGAIN study group. Consistent improvement with eculizumab across muscle groups in myasthenia gravis. Ann Clin Transl Neurol. 2020 Aug;7(8):1327-1339. doi: 10.1002/acn3.51121. Epub 2020 Jul 22.
- Jacob S, Murai H, Utsugisawa K, Nowak RJ, Wiendl H, Fujita KP, O'Brien F, Howard JF Jr. Response to eculizumab in patients with myasthenia gravis recently treated with chronic IVIg: a subgroup analysis of REGAIN and its open-label extension study. Ther Adv Neurol Disord. 2020 May 6;13:1756286420911784. doi: 10.1177/1756286420911784. eCollection 2020.
- Vissing J, Jacob S, Fujita KP, O'Brien F, Howard JF; REGAIN study group. 'Minimal symptom expression' in patients with acetylcholine receptor antibody-positive refractory generalized myasthenia gravis treated with eculizumab. J Neurol. 2020 Jul;267(7):1991-2001. doi: 10.1007/s00415-020-09770-y. Epub 2020 Mar 18.
- Andersen H, Mantegazza R, Wang JJ, O'Brien F, Patra K, Howard JF Jr; REGAIN Study Group. Eculizumab improves fatigue in refractory generalized myasthenia gravis. Qual Life Res. 2019 Aug;28(8):2247-2254. doi: 10.1007/s11136-019-02148-2. Epub 2019 Mar 23. Erratum In: Qual Life Res. 2019 May 21;:
Helpful Links
Study record dates
Study Major Dates
Study Start
Study Start
Primary Completion (Actual)
Primary Completion
Study Completion (Actual)
Study Completion
Study Registration Dates
First Submitted
First Submitted
First Submitted That Met QC Criteria
First Submitted That Met QC Criteria
First Posted (Estimate)
First Posted
Study Record Updates
Last Update Posted (Actual)
Last Update Posted
Last Update Submitted That Met QC Criteria
Last Update Submitted That Met QC Criteria
Last Verified
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
- Pathologic Processes
- Nervous System Diseases
- Immune System Diseases
- Neoplasms
- Autoimmune Diseases of the Nervous System
- Autoimmune Diseases
- Neoplasms by Site
- Neurologic Manifestations
- Musculoskeletal Diseases
- Muscular Diseases
- Neuromuscular Diseases
- Neurodegenerative Diseases
- Neuromuscular Manifestations
- Nervous System Neoplasms
- Paraneoplastic Syndromes, Nervous System
- Paraneoplastic Syndromes
- Neuromuscular Junction Diseases
- Muscle Weakness
- Myasthenia Gravis
- Physiological Effects of Drugs
- Immunosuppressive Agents
- Immunologic Factors
- Complement Inactivating Agents
- Eculizumab
Other Study ID Numbers
Other Study ID Numbers
- ECU-MG-301
- 2013-003589-15 (EudraCT Number)
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
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