An Efficacy and Safety Study of Ontamalimab as Maintenance Therapy in Participants With Moderate to Severe Ulcerative Colitis (FIGARO UC 303)
Ulcerative Colitis
About this trial
This is an interventional treatment trial for Ulcerative Colitis focused on measuring Ulcerative colitis
Eligibility Criteria
Inclusion Criteria:
- Participants and/or their parent or legally authorized representative must have an understanding, ability, and willingness to fully comply with study procedures and restrictions.
- Participants must be able to voluntarily provide written, signed, and dated (personally or via a legally authorized representative) informed consent and/or assent, as applicable, to participate in the study.
- Participants must have completed the 12-week induction treatment period (SHP647-301 [NCT03259334] and SHP647-302 [NCT03259308]).
Participants must have achieved clinical response in induction study (SHP647-301 [NCT03259334] and SHP647-302 [NCT03259308]). Clinical response is defined as:
i) A decrease from the induction study (SHP647-301 [NCT03259334] and SHP647-302 [NCT03259308]) baseline in the composite score of patient reported symptoms using daily e-diary and centrally read endoscopy of at least 2 points and at least 30 percent (%), with an accompanying decrease in the sub score for rectal bleeding greater than or equal to (>=) 1 point or a sub score for rectal bleeding less than or equal to (<=) 1 OR ii) A decrease from the induction study (SHP647-301 [NCT03259334] and SHP647-302 [NCT03259308]) baseline in total Mayo score of at least 3 points and at least 30%, with an accompanying decrease in the rectal bleeding sub score of at least 1 point or an absolute rectal bleeding sub score of 0 or 1.
For eligibility assessment, clinical response will be determined based on the centrally read endoscopy performed during screening and at Week 12 of induction study (SHP647-301 [NCT03259334] and SHP647-302 [NCT03259308]).
- Participants receiving any treatment(s) for ulcerative colitis (UC) are eligible provided they have been, and are anticipated to be, on a stable dose for the designated period of time.
Exclusion Criteria:
- Participants who had major protocol deviation(s) (as determined by the sponsor) in induction study (SHP647-301 [NCT03259334] and SHP647-302 [NCT03259308]).
- Participants who permanently discontinued investigational product because of an adverse event (AE), regardless of relatedness to investigational product, in induction study (SHP647-301 [NCT03259334] and SHP647-302 [NCT03259308]).
- Participants who are likely to require surgery for UC during the study period.
- Participants are females who became pregnant during induction study (SHP647-301 [NCT03259334] and SHP647-302 [NCT03259308]), females who are planning to become pregnant during the study period, or males or females of childbearing potential not agreeing to continue using appropriate contraception methods (that is [i.e,] highly effective methods for female and medically appropriate methods for male study participants) through the conclusion of study participation.
- Participants who do not agree to postpone donation of any organ or tissue, including male participants who are planning to bank or donate sperm and female participants who are planning to harvest or donate eggs, for the duration of the study and through 16 weeks after last dose of investigational product.
- Participants who, in the opinion of the investigator or the sponsor, will be uncooperative or unable to comply with study procedures.
- Participants who have a newly diagnosed malignancy or recurrence of malignancy (other than resected cutaneous basal cell carcinoma, squamous cell carcinoma, or carcinoma in situ of the uterine cervix that has been treated with no evidence of recurrence).
- Participants who have developed any major illness/condition or evidence of an unstable clinical condition (example [eg], renal, hepatic, hematologic, gastrointestinal (except disease under study), endocrine, cardiovascular, pulmonary, immunologic [eg, Felty's syndrome], or local active infection/infectious illness) that, in the investigator's judgment, will substantially increase the risk to the participant if he or she participates in the study.
- Participants with any other severe acute or chronic medical or psychiatric condition or laboratory or electrocardiogram (ECG) abnormality that may increase the risk associated with study participation or investigational product administration or may interfere with the interpretation of study results and, in the judgment of the investigator, would make the participant inappropriate for entry into this study.
- Participants with known exposure to Mycobacterium tuberculosis (TB) since testing at screening in induction study (SHP647-301 [NCT03259334] and SHP647-302 [NCT03259308]) and who are without a generally accepted course of treatment.
- Participants who are investigational site staff members or relatives of those site staff members or participants who are sponsor employees directly involved in the conduct of the study.
- Participants who are participating in or plan to participate in other investigational studies (other than induction study SHP647- 301 [NCT03259334] and SHP647-302 [NCT03259308]) during study SHP647-303 [NCT03290781].
Sites / Locations
- Arizona Digestive Health Mesa - East
- Elite Clinical Studies - Phoenix - Clinedge - PPDS
- Atria Clinical Research - Clinedge - PPDS
- Advanced Research Center
- Kindred Medical Institute for Clinical Trials, LLC
- United Medical Doctors
- University of California San Diego
- OM Research LLC - Lancaster - ClinEdge - PPDS
- VA Long Beach Healthcare System - NAVREF - PPDS
- Facey Medical Foundation
- United Medical Doctors
- Alliance Clinical Research-(Vestavia Hills)
- Inland Empire Liver Foundation
- University of California San Francisco
- Care Access Research, San Pablo
- Peak Gastroenterology Associates
- Asthma and Allergy Associates PC - CRN - PPDS
- Renaissance Research Medical Group, INC
- Gastro Florida
- Advanced Clinical Research Network
- Alliance Medical Research LLC
- ENCORE Borland-Groover Clinical Research - ERN - PPDS
- SIH Research
- Crystal Biomedical Research
- Hi Tech and Global Research, LLc
- Nuren Medical and Research Center
- Sanchez Clinical Research, Inc
- Gastroenterology Group of Naples
- Pharma Research International Inc
- Omega Research Consultants LLC - Clinedge - PPDS
- Accel Research Sites - St. Petersburg - ERN - PPDS
- BRCR Medical Center, Inc
- East Coast Institute for Research, LLC
- DBC Research
- Bayside Clinical Research - New Port Richey
- Atlanta Gastroenterology Specialists, PC
- Infinite Clinical Trials
- Gastrointestinal Diseases, Inc Research - IACT- HyperCore - PPDS
- Atlanta Center For Gastroenterology PC
- Loretto Hospital
- IL Gastroenterology Group
- Edward Hines Jr VA Hospital - NAVREF - PPDS
- Dupage Medical Group
- Medisphere Medical Research Center LLC
- Laporte County Institute For Clinical Research
- Gastroenterology Associates of Hazard
- CroNOLA, LLC.
- Clinical Trials of SWLA, LLC
- Louisiana Research Center LLC
- Chevy Chase Clinical Research
- Commonwealth Clinical Studies LLC
- UMass Memorial Medical Center
- University of Michigan
- Clinical Research Institute of Michigan
- National Clinical, LLC
- Mayo Clinic Health System - PPDS
- Digestive Health Center PA
- Washington University School of Medicine
- St Louis Center For Clinical Research
- Advanced Biomedical Research of America
- Encompass Care
- New York Total Medical Care PC
- NYU Langone Long Island Clinical Research Associates
- Weill Cornell Medical College
- Southtowns Gastroenterology, PLLC
- East Carolina Gastroenterology
- Piedmont Healthcare
- Consultants For Clinical Research Inc
- Consultants For Clinical Research Inc
- Consultants For Clinical Research Inc
- Prestige Clinical Research
- Ohio Clinical Research Partners LLC
- Veteran's Research and Education Foundation - NAVREF - PPDS
- Veterans Research Foundation of Pittsburgh - NAVREF - PPDS
- Digestive Disease Associates
- Gastro One
- Vanderbilt University Medical Center
- Advanced Gastroenterology-Union City
- Inquest Clinical Research/Coastal Gastroenterology Associates, PA - TDDC - PPDS
- Northside Gastroenterology
- Digestive Health Associates of Texas, P.A.dba DHAT Research Institute
- Precision Research Institute, LLC
- Biopharma Informatic Inc.
- Southwest Clinical Trials
- Aztec Medical Research
- BI Research Center
- Southern Star Research Institute LLC
- DM Clinical Research - ERN - PPDS
- HP Clinical Research
- Mid Atlantic Health Specialists
- Winchester Gastroenterology Associates
- CHI Franciscan Digestive Care Associates
- Exemplar Research, Inc. - Elkins
- West Virginia University Hospital
- Fundación Favaloro
- Hospital Privado Centro Médico de Córdoba
- Sanatorio 9 de Julio SA
- Concord Repatriation General Hospital
- Liverpool Hospital
- Royal Brisbane & Women's Hospital
- Mater Hospital Brisbane
- Royal Adelaide Hospital
- The Alfred Hospital
- St Vincents Hospital Melbourne - PPDS
- A.ö. Krankenhaus der Barmherzigen Brüder
- Universitätsklinikum St. Pölten
- LKH-Universitätsklinikum Klinikum Graz
- Klinikum Klagenfurt Am Woerthersee
- Salzburger Landeskliniken
- Klinikum Wels-Grieskirchen GmbH
- Medizinische Universitat Wien (Medical University of Vienna)
- UZ Gent
- UZ Gasthuisberg
- AZ Groeninge
- CHU Mouscron
- Clinical Center Banja Luka
- University Multiprofile Hospital for Active Treatment Sveta Anna
- Acibadem City Clinic University Multiprofile Hospital for Active Treatment EOOD
- University Multiprofile Hospital for Active Treatment - Dr. Georgi Stranski EAD
- Multiprofile Hospital for Active Treatment Eurohospital
- Specialized Hospital for Active Treatment of Pneumophthisiatric Diseases Dr.D.Gramatikov- Ruse- PPDS
- Medical Center-1-Sevlievo EOOD
- Second Multiprofile Hospital for Active Treatment Sofia
- Medical Center Excelsior OOD - PPDS
- Diagnostic and Consulting Center Aleksandrovska EOOD
- University Multiprofile Hospital for Active Treatment Sv Ivan Rilski EAD
- University Multiprofile Hospital for Active Treatment Tsaritsa Yoanna - ISUL EAD
- Medical Center Convex EOOD
- Diagnostic Consultative Centre Mladost - M OOD
- Percuro Clinical Research LTD
- Toronto Digestive Disease Associates Inc
- Hospital Pablo Tobón Uribe
- Servimed S.A.S
- IPS Centro Médico Julián Coronel S.A.S. - PPDS
- University Hospital Center Zagreb
- Opca Bolnica Karlovac
- Opca bolnica Bjelovar
- Clinical Hospital Centre Osijek
- University Hospital Centre Split
- General Hospital Virovitica
- General County Hospital Vukovar and Croatian Veterans Hospital
- General Hospital Zadar
- Hepato-Gastroenterologie HK, s. r. o.
- PreventaMed s.r.o.
- Institut Klinicke A Experimentalni Mediciny
- ISCARE I.V.F. a.s.
- Krajska zdravotni, a.s. - Masarykova nemocnice v Usti nad Labem, o.z.
- Nemocnice Pardubickeho kraje, a.s. Orlickoustecka nemocnice
- East Viru Central Hospital
- OÜ LV Venter
- West Tallinn Central Hospital
- Universitätsklinikum Ulm
- Universitätsklinikum der RWTH Aachen
- Uniklinik Köln
- Gastro Campus Research GbR
- Universitatsklinikum Schleswig-Holstein
- Universitatsklinikum Jena
- Gastroenterologische Facharztpraxis am Mexikoplatz
- Charité - Universitätsmedizin Berlin
- Sana Klinikum Biberach
- Universitätsklinikum Frankfurt
- Asklepios Westklinikum Hamburg Ggmbh
- Klinikum rechts der Isa der Technischen Universitaet Muenchen
- Ippokrateio General Hospital of Athens
- University General Hospital of Patras
- Theageneio Anticancer Oncology Hospital of Thessaloniki
- Euromedica - PPDS
- Magyar Honvédség Egészségügyi Központ
- Pannónia Magánorvosi Centrum Kft
- ENDOMEDIX Kft.
- Bekes Megyei Kozponti Korhaz
- Debreceni Egyetem Klinikai Kozpont
- Bekes Megyei Kozponti Korhaz
- Mohacsi Korhaz
- Tolna Megyei Balassa János Kórház
- Csongrad Megyei Dr. Bugyi Istvan Korhaz
- Fejer Megyei Szent Gyorgy Egyetemi Oktato Korhaz
- Csolnoky Ferenc Korhaz
- Jávorszky Ödön Kórház
- St Vincent's University Hospital
- Shaare Zedek Medical Center
- Hadassah Medical Center - PPDS
- Galilee Medical Center
- Nazareth EMMS Hospital
- Tel Aviv Sourasky Medical Center PPDS
- Baruch Padeh Poriya Medical Center
- Azienda Ospedaliera Mater Domini Di Catanzaro
- Azienda Ospedaliero Universitaria Di Bologna - Policlinico S Orsola Malpighi
- Azienda Ospedaliero Universitaria Di Modena Policlinico
- Azienda Ospedaliera San Camillo Forlanini
- Ospedale Casa Sollievo Della Sofferenza IRCCS
- Azienda Ospedaliera Universitaria Careggi
- IRCCS Ospedale Sacro Cuore Don Calabria
- Azienda Ospedale Università Padova - Dipartimento Salute della Donna e del Bambino
- A.O.U. Maggiore della Carità
- Fondazione IRCCS Policlinico San Matteo di Pavia
- La Sapienza-Università di Roma-Policlinico Umberto I
- Fondazione Policlinico Universitario A Gemelli
- Istituto Clinico Humanitas
- Azienda Ospedaliera Città della Salute e della Scienza di Torino
- Azienda Ospedaliera Ordine Mauriziano di Torino
- Sapporo Medical University Hospital
- Medical Corporation Aoyama Clinic
- Hyogo College of Medicine
- Sagamihara Kyodo Hospital
- Dokkyo Medical University Saitama Medical Center
- Nihonbashi Egawa Clinic
- Jikei University Hospital
- Kitasato University Kitasato Institute Hospital
- Ome Municipal General Hospital
- Tokatsu Tsujinaka Hospital
- Kunimoto Hospital
- Fukuoka University Chikushi Hospital
- Hakodate Koseiin Hakodate Goryoukaku Hospital
- Kawabe Clinic
- Yuai Memorial Hospital
- Hidaka Coloproctology Clinic
- Aizawa Hospital
- Aichi Medical University Hospital
- Nishinomiya Municipal Central Hospital
- Ishida Clinic of IBD and Gastroenterology
- Onomichi General Hospital
- Kinshukai Infusion Clinic
- Chiinkai Dojima General & Gastroenterology Clinic
- Shiga University of Medical Science Hospital
- Bellland General Hospital
- Toho University Sakura Medical Center
- Sapporo Tokushukai Hospital
- Sapporo Higashi Tokushukai Hospital
- Tohoku Rosai Hospital
- Dokkyo Medical University Hospital
- Medical Corporation Shoyu-kai Fujita Gastroenterology Hospital
- Koukokukai Ebisu Clinic
- Shinbeppu Hospital
- Yodogawa Christian Hospital
- Kyungpook National University Hospital
- Yonsei University Wonju Severance Christian Hospital
- CHA Bundang Medical Center, CHA University
- The Catholic University of Korea, St. Vincent's Hospital
- Inje University Haeundae Paik Hospital
- Pusan National University Hospital
- Yeungnam University Hospital
- Kyungpook National University Chilgok Hospital
- Gachon University Gil Medical Center
- Kyung Hee University Hospital
- Seoul National University Hospital
- Kangbuk Samsung Hospital
- Severance Hospital Yonsei University Health System - PPDS
- Asan Medical Center - PPDS
- Samsung Medical Center PPDS
- Inje University Seoul Paik Hospital
- Rafik Hariri University Hospital
- Hammoud Hospital University Medical Center
- Hospital of Lithuanian University of Health Sciences Kaunas Clinics
- Vilnius University Hospital Santaros Klinikos
- Vilnius City Clinical Hospital
- Clinica de Higado y Gastroenterologia Integral, S.C.
- JM Research S.C
- Unidad de Atencion Medica e Investigacion en Salud
- Centro de Investigación Médica Aguascalientes
- Phylasis Clinicas Research S. de R.L. de C.V.
- Centro de Investigacion Clinica Acelerada, S.C.
- Instituto de Investigaciones Aplicadas a la Neurociencia A.C.
- Accelerium, S. de R.L. de C.V.
- Clinical Research Institute
- Investigacion Biomedica para el Desarrollo de Farmacos S.A. de C.V.
- ETZ-Elisabeth
- NWZ, location Alkmaar
- Leids Universitair Medisch Centrum
- VU Medisch Centrum
- Academisch Medisch Centrum Amsterdam
- Auckland City Hospital
- Dunedin Hospital
- Wellington Hospital
- Waikato Hospital
- Melita Medical
- Lexmedica
- Vitamed Galaj i Cichomski sp.j.
- Gastromed Kopon Zmudzinski i Wspolnicy Sp.j.Specjalistyczne Centrum Gastrologii i Endoskopii Specj
- Centrum Diagnostyczno - Lecznicze Barska sp. z o.o.
- Niepubliczny Zaklad Opieki Zdrowotnej CENTRUM MEDYCZNE Szpital Swietej Rodziny
- Uniwersytecki Szpital Kliniczny im. Wojskowej Akademii Medycznej Centralny Szpital Weteranow
- Instytut Centrum Zdrowia Matki Polki
- Krakowskie Centrum Medyczne
- BioVirtus Centrum Medyczne
- Niepubliczny Zakład Opieki Zdrowotnej VIVAMED
- Miedzyleski Szpital Specjalistyczny w Warszawie
- Uniwersytecki Szpital Kliniczny w Bialymstoku
- Endoskopia Sp. z o.o.
- Szpital Zakonu Bonifratrow pw. Aniolow Strozow w Katowicach
- Szpital Specjalistyczny sw Lukasza - Oddzial Gastroenterologii
- Twoja Przychodnia - Szczecińskie Centrum Medyczne
- Szpital Uniwersytecki Nr 2 im. Dr Jana Biziela w Bydgoszczy
- Centrum Medyczne Pratia Bydgoszcz
- Centrum Medyczne Czestochowa - PRATIA - PPDS
- Centrum Medyczne Gdynia - PRATIA - PPDS
- NZOZ All Medicus
- Centrum Medyczne A-Z Clinic Mateusz Sidor, Piotr Puc-Lekarze Spolka Partnerska
- Centrum Opieki Zdrowotnej Orkan-Med Stec-Michalska Sp. J.
- Med Gastr Sp.z.o.o Sp.k
- Twoja Przychodnia - Centrum Medyczne Nowa Sol
- Centrum Innowacyjnych Terapii
- Clinical Research Center Spółka z Ograniczoną Odpowiedzialnością, Medic-R Spółka Komandytowa
- Korczowski Bartosz, Gabinet Lekarski
- Bandurskiego 98/U12
- Sonomed Sp. z o.o.
- H-T. Centrum Medyczne Endoterapia
- Centrum Zdrowia MDM
- Centrum Medyczne Warszawa - PRATIA - PPDS
- Centralny Szpital Kliniczny MSW
- Samodzielny Publiczny Szpital Wojewodzki im. Papieza Jana Pawla II
- Hospital da Luz
- Hospital de Braga
- Centro Hospitalar do Algarve - Hospital de Portimao
- Hospital Senhora da Oliveira - Guimaraes, E.P.E
- Hospital de São Bernardo
- Cluj-Napoca Emergency Clinical County Hospital
- Dr.Carol Davila Emergency University Central Military Hospital
- Sana Monitoring SRL
- Colentina Clinical Hospital
- Prof. Dr. Matei Bals Institute of Infectious Diseases
- Fundeni Clinical Institute
- Centrul Medical Hifu Terramed Conformal S.R.L.
- Affidea Romania SRL
- Gastromedica SRL
- Dr. Tirnaveanu Amelita Private Practice
- Dr. Goldis Gastroenterology Center SRL
- Kazan State Medical University
- Moscow Clinical Scientific Center
- Moscow Regional Research Clinical Institute Na Mfvladimirskiy
- Nizhegorodskaya Regional Clinical Hospital n.a. Semashko
- Research Institute of Physiology and Basic Medicine
- Rostov State Medical University
- Rostov State Medical University
- Union Clinic, LLC
- Russian Medical Military Academy n.a. S.M. Kirov
- Medical University Reaviz
- Private Healthcare Institution Clinical Hospital RZD-Medicina of Samara city
- Medical Company Hepatolog, LLC
- SHI Regional Clinical Hospital
- Smolensk Regional Clinical Hospital
- St. Elizabeth Municipal Clinical Hospital
- First St. Petersburg State Medical University n.a. I.P Pavlov
- Stavropol State Medical University
- Regional Consulting and Diagnostics Centre
- Clinical Hospital Center Bezanijska Kosa
- University Clinical Center Nis
- General Hospital Vrsac
- University Clinical Center Kragujevac
- Univerzitna nemocnica Bratislava
- KM Management, spol. s r.o.
- Gastro LM, s.r.o.
- CLINRESCO, ARWYP Medical Suites
- Dr. J Breedt
- Dr JP Wright
- C.H. Regional Reina Sofia - PPDS
- Hospital Universitario de Fuenlabrada
- CHUVI - H.U. Alvaro Cunqueiro
- Centro Medico Teknon - Grupo Quironsalud
- Hospital Universitario Juan Ramon Jimenez
- Hospital Universitario de La Princesa
- Hospital Universitario Fundacion Jimenez Diaz
- Hospital Universitario La Paz - PPDS
- Hospital Universitario Virgen del Rocio - PPDS
- Hospital Universitari i Politecnic La Fe de Valencia
- Universität Zürich
- Istanbul Universitesi Cerrahpasa Tip Fakultesi
- Mersin University Medical Faculty
- Regional Municipal Non-profit Enterprise "Chernivtsi Regional Clinical Hospital"
- Municipal Nonprofit Enterprise CCH #2 n.a. prof. O.O. Shalimov of Kharkiv City Council
- Municipal Non-profit Enterprise of Kyiv Regional Council Kyiv Regional Clinical Hospital
- Communal Nonprofit Enterprise Vinnytsia Regional Clinical Hospital named after N.I. Pirogov VRC
- Municipal Non-profit Enterprise City Emergency Care Hospital of Zaporizhzhia Regional Council
- ME Dnipropetrovsk Regional Clinical Hospital n.a. I.I Mechnykov Dnipropetrovsk Regional Council
- LLC Medical Center Family Medicine Clinic
- State Institution "Institute of Gastroenterology of National Academy of Medical Sciences of Ukraine"
- Clinic of SI National Institute of Therapy n.a. L.T. Mala of NAMS of Ukraine
- Communal Non-Commercial Enterprize of Kharkiv Regional Council Regional Clinical Hospital
- MNPE of Kharkiv Regional Council Regional Clinical Specialized Dispensary of Radiation Protection
- Municipal Non-profit Enterprise Kherson City Clinical Hospital named after Ye.Ye. Karabelesh
- Municipal Enterprise Kryvyi Rih City Clinical Hospital #2 of Kryvyi Rih City Council
- Medical Center of LLC Medical Clinic Blagomed
- Kyiv City Clinical Hospital #18
- Treatment and Diagnostic Center "Healthy and Happy" of LLC "Healthy and Happy"
- Municipal Institution of KRC Kyiv Regional Hospital #2
- Lviv Railway Clinical Hospital of branch Health Center of Joint Stock Co. Ukrainian Railway
- Municipal Nonprofit Enterprise Lviv Clinical Emergency Care Hospital
- Municipal Non-profit Enterprise Odessa Regional Clinical Hospital of Odessa Regional Council
- MNPE Central City Clinical Hospital of Uzhhorod City Council
- Medical Clinical Research Center of Medical Center LLC Health Clinic
- Communal Nonprofit Enterprise Vinnytsia Regional Clinical Hospital named after N.I. Pirogov VRC
- Communal Non-Commercial Enterprise Vinnytsia City Clinical Hospital 1
- MNPE City Hospital No. 6 of Zaporizhzhia City Council
- Aberdeen Royal Infirmary - PPDS
- Fairfield General Hospital - PPDS
- Whipps Cross University Hospital
- North Tyneside General Hospital
- Royal Shrewsbury Hospital
- Western General Hospital Edinburgh - PPDS
- Royal Gwent Hospital - PPDS
- New Cross Hospital
Arms of the Study
Arm 1
Arm 2
Arm 3
Experimental
Experimental
Placebo Comparator
Ontamalimab 25 mg
Ontamalimab 75 mg
Placebo
Participants will receive 25 milligram (mg) of ontamalimab or placebo and achieved a clinical response in one of the induction studies (SHP647-301 [NCT03259334] and SHP647-302 [NCT03259308]) will receive 25 mg of ontamalimab as maintenance treatment subcutaneously using a prefilled syringe once in every 4 weeks (Q4W) up to Week 52.
Participants will receive 75 mg of ontamalimab or placebo and achieved a clinical response in one of the induction studies (SHP647-301 [NCT03259334] and SHP647-302 [NCT03259308]) will receive 75 mg of ontamalimab as maintenance treatment subcutaneously using a prefilled syringe Q4W up to Week 52.
Participants will receive 25 mg or 75 mg ontamalimab or placebo matched to ontamalimab in the induction studies (SHP647-301 [NCT03259334] and SHP647-302 [NCT03259308]) will receive placebo matched to ontamalimab as maintenance treatment subcutaneously using a prefilled syringe Q4W up to Week 52.