Eine Studie zu Mezagitamab bei Erwachsenen mit chronischer primärer Immunthrombozytopenie
Eine randomisierte, doppelblinde, placebokontrollierte Phase-3-Studie zur Bewertung der Wirksamkeit und Sicherheit der subkutanen Mezagitamab-Injektion bei Teilnehmern mit chronischer primärer Immunthrombozytopenie
Primary immune thrombocytopenia (ITP) is a condition where the immune system mistakenly destroys platelets, which are cells that help stop bleeding. This leads to a low number of platelets, making it easier to bruise or bleed. The main aim of this study is to learn whether mezagitamab, when given just under the skin (subcutaneously [SC]), is effective in keeping the platelet count of adults with ITP stable when compared to a placebo. A placebo looks like medicine but doesn't have any active ingredients in it.
The participants will be treated with mezagitamab for up to 6 months.
During the study, participants will visit their study clinic several times.
Participants who complete the TAK-079-3002 study or do not have any response to study treatment by week 16 (according to study criteria) will be given the opportunity to participate in a continuation study to receive open label mezagitamab (if they are eligible and the site is able to open the continuation study).
Studienübersicht
Status
Status
Bedingungen
Bedingungen
Intervention / Behandlung
Intervention / Behandlung
Studientyp
Studientyp
Einschreibung (Geschätzt)
Einschreibung
Phase
Phase
- Phase 3
Kontakte und Standorte
Studienkontakt
Studienkontakt
- Name: Takeda Contact
- Telefonnummer: +1-877-825-3327
- E-Mail: medinfoUS@takeda.com
Studienorte
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Australian Capital Territory
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Garran, Australian Capital Territory, Australien, 2605
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- Canberra Hospital
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- Philip Choi
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New South Wales
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Concord, New South Wales, Australien, 2139
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- Concord Repatriation General Hospital
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Hauptermittler:
- Vivien Chen
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Kogarah, New South Wales, Australien, 2217
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- St George Hospital
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Hauptermittler:
- Silvia Zheng
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Liverpool, New South Wales, Australien, 2170
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- University of New South Wales (UNSW) - Liverpool Hospital - Liverpool Cancer Therapy Centre
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Hauptermittler:
- Danny Hsu
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Westmead, New South Wales, Australien, 2145
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- Westmead Hospital
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Hauptermittler:
- Jennifer Curnow
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Victoria
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Melbourne, Victoria, Australien, 3000
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- Peter MacCallum Cancer Centre
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- Isaac Goncalves
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Melbourne, Victoria, Australien, 3005
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- The Alfred Hospital
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Hauptermittler:
- Huyen Tran
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Melbourne, Victoria, Australien, 3004
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- Monash University - Australian Centre for Blood Diseases (ACBD)
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Hauptermittler:
- Zane Kaplan
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Western Australia
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Murdoch, Western Australia, Australien, 6150
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- Fiona Stanley Hospital
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- Dominic Pepperell
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West Perth, Western Australia, Australien, 6005
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Plovdiv, Bulgarien, 4002
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- Medical Center "Fama Medical"
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Sofia, Bulgarien, 1431
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- UMHAT Sv. Ivan Rilski
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Sofia, Bulgarien, 1750
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- UMHAT SofiaMed, OOD
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Stara Zagora, Bulgarien, 6003
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- University Multiprofile Hospital for Active Treatment - Prof. Dr. Stoyan Kirkovich AD
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Sofia-Grad
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Sofia, Sofia-Grad, Bulgarien, 1606
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- Military Medical Academy Multiprofile Hospital for Active Treatment - Sofia
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Beijing Municipality
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Beijing, Beijing Municipality, China, 100730
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- Peking Union Medical College Hospital
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- Tienan Zhu
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- E-Mail: zhutn@pumch.cn
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Guangdong
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Guangzhou, Guangdong, China, 510080
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- Guangdong Provincial People's Hospital
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Guangxi
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Nanning, Guangxi, China, 530021
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- The First Affiliated Hospital of Guangxi Medical University
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- Peng Cheng
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- E-Mail: jhlee3@amc.seoul.kr
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Hebei
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Shijiazhuang, Hebei, China, 050031
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- The First Hospital of Hebei Medical University
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Hauptermittler:
- Qingchi Liu
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Wuhan, Hebei, China, 430022
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- Yu Hu
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Henan
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Zhengzhou, Henan, China, 450004
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- Henan Cancer Hospital
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- Hu Zhou
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Jiangsu
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Suzhou, Jiangsu, China, 215006
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- The First Affiliated Hospital of Soochow University - Shizijie Campus
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- Jie Yin
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Jiangxi
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Nanchang, Jiangxi, China, 330006
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- The First Affiliated Hospital of Nanchang University - Donghu Campus
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- Ruibin Huang
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Liaoning
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Shenyang, Liaoning, China, 110004
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- Shengjing Hospital of China Medical University - Nanhu Campus
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Hauptermittler:
- Aijun Liao
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Shaanxi
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Xi'an, Shaanxi, China, 710068
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- Shaanxi Provincial People's Hospital
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Shandong
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Jinan, Shandong, China, 250012
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- Qilu Hospital of Shandong University
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Hauptermittler:
- Ming Hou
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- Telefonnummer: +8653182169114-9879
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Shanghai Municipality
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Shanghai, Shanghai Municipality, China, 201508
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- Jinshan Hospital of Fudan University
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Hauptermittler:
- Yunfeng Cheng
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- E-Mail: ypark@augusta.edu
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Sichuan
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Chengdu, Sichuan, China, 610041
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- West China Hospital Sichuan University
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- Yuping Gong
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Tianjin Municipality
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Tianjin, Tianjin Municipality, China, 300020
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- Institute of Hematology and Blood Diseases Hospital Chinese Academy of Medical Sciences - PPDS
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- Yunfei Chen
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- E-Mail: chenyunfei@ihcams.ac.cn
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Yunnan
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Kunming, Yunnan, China, 650101
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- Zeping Zhou
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Zhejiang
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Hangzhou, Zhejiang, China, 310006
- Abgeschlossen
- Zhejiang Provincial Hospital of Chinese Medicine - Main
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Créteil, Frankreich, 94000
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- Hospital Henri Mondor
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Bourgogne-Franche-Comté
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Dijon, Bourgogne-Franche-Comté, Frankreich, 1000
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- Chu Dijon - Bourgogne
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- Bernard Bonnotte
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Pátrai, Griechenland, 264 43
- Aktiv, nicht rekrutierend
- Olympion General Clinic & Rehabilitation Center
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Thessaloniki, Griechenland, 570 10
- Aktiv, nicht rekrutierend
- General Hospital of Thessaloniki George Papanikolaou
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Pok Fu Lam
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Hong Kong, Pok Fu Lam, Hongkong
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- Queen Mary Hospital
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Kontakt:
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Hauptermittler:
- Yok Lam Kwong
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Bologna, Italien, 40123
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- Azienda Ospedaliera Universitaria Policlinico Sant'Orsola Malpighi
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Milan, Italien, 20162
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- ASST Grande Ospedale Metropolitano Niguarda - Presidio Ospedaliero Ospedale Niguarda
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Monza, Italien, 20900
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- Fondazione IRCCS San Gerardo Dei Tintori
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Novara, Italien, 28100
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- A.O.U. Maggiore della Carita
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Rome, Italien, oo133
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- Azienda Ospedaliera Universitaria Policlinico Tor Vergata
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- Francesco Buccisano
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Torino, Italien, 10126
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- AOU Citta della Salute e della Scienza di Torino
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Trieste, Italien, 34129
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- Azienda sanitaria universitaria Giuliano Isontina
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Vicenza, Italien, 36100
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- Azienda ULSS 8 Berica - Ospedale San Bortolo
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Campania
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Naples, Campania, Italien, 80131
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- Azienda Ospedaliera Universitaria Federico II
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Hauptermittler:
- Fabrizio Pane
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Kontakt:
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Lazio
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Rome, Lazio, Italien, oo610
- Aktiv, nicht rekrutierend
- Universita degli Studi di Roma La Sapienza - Umberto I Policlinico di Roma
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Sicily
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Catania, Sicily, Italien, 95122
- Aktiv, nicht rekrutierend
- Azienda Ospedaliera Di Rilievo Nazionale E Di Alta Specializzazione Garibaldi
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Chiba
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Chuo-ku, Chiba, Japan, 260-0852
- Rekrutierung
- Chiba Aoba Municipal Hospital
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Kontakt:
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Hauptermittler:
- Yokota Akira
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Narashino-shi, Chiba, Japan, 275-8580
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- Chibaken Saiseikai Narashino Hospital
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Hauptermittler:
- Ryuko Cho
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Kontakt:
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Higashiibaraki
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Ibaraki, Higashiibaraki, Japan, 311-3193
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- National Hospital Organization Mito Medical Center
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Hauptermittler:
- Chikashi Yoshida
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Kanagawa
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Yokohama, Kanagawa, Japan, 232-0024
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- Yokohama City University Medical Center
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Hauptermittler:
- Takuya Miyazaki
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Miyagi
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Sendai, Miyagi, Japan, 980-8574
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- Tohoku University Hospital
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Osaka
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Hirakata-shi, Osaka, Japan, 573-1191
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- Kansai Medical University Hospital
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Hauptermittler:
- Tomoki Ito
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Osaka, Osaka, Japan, 542-0081
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- Hematology Ohta Clinic,Shinsaibashi
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Hauptermittler:
- Kensuke Ohta
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Suita-shi, Osaka, Japan, 565-0871
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- Osaka University Hospital
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Hauptermittler:
- Kato Hisashi
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Saitama
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Iruma-gun, Saitama, Japan, 350-0495
- Rekrutierung
- Saitama Medical University Hospital
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Hauptermittler:
- Yoshitaka Miyakawa
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Kontakt:
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Tokyo
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Bunkyo-ku, Tokyo, Japan, 113-8655
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- The University of Tokyo Hospital
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Hauptermittler:
- Mineo Kurokawa
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Kontakt:
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Sumida-ku, Tokyo, Japan, 130-0022
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- Tokyo Metropolitan Bokutoh Hospital
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Hauptermittler:
- Kosugi Nobuharu
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tabashi City, Tokyo, Japan, 173-8610
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- Nihon University Itabashi Hospital
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Hauptermittler:
- Otake Shimon
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Yamanashi
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Kofu, Yamanashi, Japan, 400-8506
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- Yamanashi Prefectural Central Hospital
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Hauptermittler:
- Masaki Iino
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Zagreb, Kroatien, 10000
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- Clinical Hospital Centar Zagreb
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Hauptermittler:
- Drazen Pulanic
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South Holland
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Rotterdam, South Holland, Niederlande, 3015 GD
- Aktiv, nicht rekrutierend
- Erasmus Medical Center, Department of Hematology
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The Hague, South Holland, Niederlande, 2545AA
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- Hagaziekenhuis
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Bergen, Norwegen, 5021
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- Universitetet i Bergen
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Hauptermittler:
- Galina Tsykunova
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Grålum, Norwegen, 1714
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Lorenskog, Norwegen, 1478
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- Akershus Universitetssykehus
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Kuyavian-Pomeranian Voivodeship
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Bydgoszcz, Kuyavian-Pomeranian Voivodeship, Polen, 85-048
- Zurückgezogen
- IN-VIVO sp. z o.o.
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Masovian Voivodeship
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Warsaw, Masovian Voivodeship, Polen, 02-776
- Aktiv, nicht rekrutierend
- Instytut Hematologii i Transfuzjologii Klinika Zaburzen Hemostazy i Chorob Wewnetrznych
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Silesian Voivodeship
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Katowice, Silesian Voivodeship, Polen, 40-523
- Aktiv, nicht rekrutierend
- Pratia Onkologia Katowice - PRATIA
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Łódź Voivodeship
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Lodz, Łódź Voivodeship, Polen, 93-513
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- N. Copernicus Provincial MCOT in Lodz
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Malmö, Schweden, 205 02
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- Skanes University hospital, Hematology Department
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Kontakt:
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Hauptermittler:
- Alexandros Arvanitakis
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Stockholm County
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Huddinge, Stockholm County, Schweden, 14186
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- Karolinska Universitetssjukhuset
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Madrid, Spanien, 28007
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- Hospital General Universitario Gregorio Maranon
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Salamanca, Spanien, 37007
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- Hospital Universitario De Salaman
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Seville, Spanien, 41013
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Mardrid
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Alcorcón, Mardrid, Spanien, 28922
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- Hospital Universitario Fundacion Alcorcon
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Madrid, Mardrid, Spanien, 28041
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- Hospital Universitario 12 de Octubre
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Daegu, Südkorea, 41944
- Rekrutierung
- Kyungpook National University Hospital
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Hauptermittler:
- Sang-Kyun Sohn
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Kontakt:
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Seoul, Südkorea, 03722
- Rekrutierung
- Severance Hospital, Yonsei University Health System
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Kontakt:
- Site Contact
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Hauptermittler:
- June-Won Cheong
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Seoul, Südkorea, 06351
- Rekrutierung
- Samsung Medical Center
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Kontakt:
- Site Contact
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Hauptermittler:
- Jun Ho Jang
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Seoul, Südkorea, 5505
- Rekrutierung
- Asan Medical Center
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Kontakt:
- Site Contact
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Hauptermittler:
- Je-Hwan Lee
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Seoul, Südkorea, 2841
- Rekrutierung
- Korea University Anam Hospital
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Kontakt:
- Site Contact
-
Hauptermittler:
- Yong Park
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Seoul, Südkorea, 03080
- Rekrutierung
- Seoul National University Hospital (SNUH)
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Kontakt:
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Hauptermittler:
- Youngil Koh
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Gyeonggi-do
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Seongnam-si, Gyeonggi-do, Südkorea, 13620
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- Seoul National University Bundang Hospital
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Kontakt:
- Site Contact
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Hauptermittler:
- Soo-Mee Bang
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Edirne, Türkei (türkiye), 22030
- Rekrutierung
- Cerrahpasa Tip Fakultesi
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Kontakt:
- Site Contact
- Telefonnummer: 905326818890
- E-Mail: mcemar68@yahoo.com
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Hauptermittler:
- Muhlis Cem Ar
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Edirne, Türkei (türkiye), 22030
- Rekrutierung
- Trakya Universitesi Tip Fakultesi Hastanesi
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Kontakt:
- Site Contact
- Telefonnummer: 905336000000
- E-Mail: mdemir@trakya.edu.tr
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Hauptermittler:
- Ahmet Muzaffer Demir
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Sakarya, Türkei (türkiye), 54290
- Noch keine Rekrutierung
- Sakarya University Education and Research Hospital
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Hauptermittler:
- Tuba Hacibekiroglu
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Kontakt:
- Site Contact
- Telefonnummer: 905054785579
- E-Mail: hacibekiroglu@sakarya.edu.tr
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Ankara
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Mamak, Ankara, Türkei (türkiye), 6620
- Rekrutierung
- Ankara University Faculty of Medicine Cebeci Hospital, Department of Hematology
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Hauptermittler:
- Selami Toprak
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Kontakt:
- Site Contact
- Telefonnummer: 905327000000
- E-Mail: sktoprak@yahoo.com
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Aydın
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Efeler, Aydın, Türkei (türkiye), 9100
- Rekrutierung
- Aydin Adnan Menderes University Medical Faculty-Hematology Department
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Hauptermittler:
- Irfan Yavasoglu
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Kontakt:
- Site Contact
- E-Mail: dryavas09@gmail.com
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Arkansas
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Hot Springs, Arkansas, Vereinigte Staaten, 71913
- Rekrutierung
- Genesis Cancer and Blood Institute - SCRI
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Kontakt:
- Site Contact
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Hauptermittler:
- Lingyi Chen
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California
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Los Angeles, California, Vereinigte Staaten, 90033
- Rekrutierung
- USC Norris Comprehensive Cancer Center - Keck Medicine of USC
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Hauptermittler:
- Howard Liebman
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Kontakt:
- Site Contact
- E-Mail: duran_c@med.usc.edu
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San Diego, California, Vereinigte Staaten, 92121
- Noch keine Rekrutierung
- University of California San Diego Center for Bleeding and Clotting Disorders
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Kontakt:
- Site Contact
-
Hauptermittler:
- Annette Von Drygalski
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Colorado
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Denver, Colorado, Vereinigte Staaten, 80218
- Zurückgezogen
- Rocky Mountain Cancer Center
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District of Columbia
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Washington D.C., District of Columbia, Vereinigte Staaten, 20007
- Rekrutierung
- Georgetown University Medical Center - Lombardi Comprehensive Cancer Center
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Hauptermittler:
- Catherine Broome
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Kontakt:
- Site Contact
- Telefonnummer: 202-687-3044
- E-Mail: js4936@georgetown.edu
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Georgia
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Atlanta, Georgia, Vereinigte Staaten, 30308
- Rekrutierung
- Emory University
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Hauptermittler:
- Ana Antun
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Kontakt:
- Site Contact
- Telefonnummer: 404-778-7062
- E-Mail: ana.antun@emoryhealthcare.org
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Indiana
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Indianapolis, Indiana, Vereinigte Staaten, 46260
- Rekrutierung
- Innovative Hematology, Inc.
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Kontakt:
- Site Contact
-
Hauptermittler:
- Sherwin Desouza
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Iowa
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Iowa City, Iowa, Vereinigte Staaten, 52242
- Rekrutierung
- The University of Iowa
-
Hauptermittler:
- Steven Lentz
-
Kontakt:
- Site Contact
- Telefonnummer: 319-384-9643
- E-Mail: darby-donovan@uiowa.edu
-
-
Kentucky
-
Louisville, Kentucky, Vereinigte Staaten, 40202
- Rekrutierung
- University Of Louisville Brown Cancer Center
-
Hauptermittler:
- Kamila Cisak
-
Kontakt:
- Site Contact
- Telefonnummer: 502-562-3429
- E-Mail: t0trox01@louisville.edu
-
-
Maryland
-
Bethesda, Maryland, Vereinigte Staaten, 20817
- Rekrutierung
- American Oncology Partners of Maryland, PA
-
Hauptermittler:
- Ralph Boccia
-
Kontakt:
- Site Contact
- Telefonnummer: 301-571-2016
- E-Mail: Taylor.Stutzman@aoncology.com
-
-
Massachusetts
-
Boston, Massachusetts, Vereinigte Staaten, 02114
- Rekrutierung
- Massachusetts General Hospital
-
Hauptermittler:
- David Kuter
-
Kontakt:
- Site Contact
- Telefonnummer: 617-726-8743
- E-Mail: dkuter@mgh.harvard.edu
-
Worcester, Massachusetts, Vereinigte Staaten, 01655
- Abgeschlossen
- University of Massachusetts Chan Medical School
-
-
Missouri
-
Kansas City, Missouri, Vereinigte Staaten, 64132
- Rekrutierung
- MidAmerica Cancer Center
-
Kontakt:
- Site Contact
-
Hauptermittler:
- Benjamin Fangman
-
-
New York
-
New York, New York, Vereinigte Staaten, 28204
- Rekrutierung
- Memorial Sloan Kettering Cancer Center
-
Kontakt:
- Site Contact
-
Hauptermittler:
- Avi Leader
-
The Bronx, New York, Vereinigte Staaten, 10461
- Rekrutierung
- Montefiore Medical Center
-
Hauptermittler:
- Irina Murakhovskaya
-
Kontakt:
- Site Contact
-
-
North Carolina
-
Durham, North Carolina, Vereinigte Staaten, 27710
- Rekrutierung
- Duke University Hospital
-
Hauptermittler:
- Ara Metjian
-
Kontakt:
- Site Contact
- Telefonnummer: 919-681-2668
- E-Mail: Kristin.byrne@duke.edu
-
Greenville, North Carolina, Vereinigte Staaten, 27837
- Rekrutierung
- East Carolina University
-
Hauptermittler:
- Darla Liles
-
Kontakt:
- Site Contact
- Telefonnummer: 252-744-3617
- E-Mail: Wootenk16@ecu.edu
-
-
Ohio
-
Cleveland, Ohio, Vereinigte Staaten, 44195
- Noch keine Rekrutierung
- Cleveland Clinic
-
Kontakt:
- Site Contact
-
Hauptermittler:
- Bethany Samuelson Bannow
-
-
Oregon
-
Portland, Oregon, Vereinigte Staaten, 97239
- Rekrutierung
- Oregon Health & Science University
-
Hauptermittler:
- Joseph Shatzel
-
Kontakt:
- Site Contact
- Telefonnummer: 503-949-1080
- E-Mail: trials@ohsu.edu
-
-
Pennsylvania
-
Philadelphia, Pennsylvania, Vereinigte Staaten, 19140
- Rekrutierung
- Lewis Katz School of Medicine at Temple University
-
Kontakt:
- Site Contact
- Telefonnummer: 215-707-3453
- E-Mail: michael.bromberg@tuhs.temple.edu
-
Hauptermittler:
- Michael Bromberg
-
Philadelphia, Pennsylvania, Vereinigte Staaten, 19104
- Rekrutierung
- Perelman Center for Advanced Medicine (PCAM) Hospital of The University of Pennsylvania Penn Blood Disorders Program
-
Hauptermittler:
- Adam Cuker
-
Kontakt:
- Site Contact
- Telefonnummer: 862-372-8544
- E-Mail: emmanuel.ndukwudimma@pennmedicine.upenn.edu
-
-
Texas
-
Houston, Texas, Vereinigte Staaten, 77030
- Rekrutierung
- Baylor College of Medicine
-
Hauptermittler:
- Senthil Sukumar
-
Kontakt:
- Site Contact
- E-Mail: senthil.sukumar@bcm.edu
-
-
Virginia
-
Norfolk, Virginia, Vereinigte Staaten, 23502
- Rekrutierung
- Virginia Oncology Associates
-
Hauptermittler:
- Celeste Bremer
-
Kontakt:
- Site Contact
- Telefonnummer: 404-778-7062
- E-Mail: ana.antun@emoryhealthcare.org
-
-
Washington
-
Seattle, Washington, Vereinigte Staaten, 98109
- Noch keine Rekrutierung
- University of Washingto
-
Kontakt:
- Site Contact
-
Hauptermittler:
- Sandhya Panch
-
-
Wisconsin
-
Milwaukee, Wisconsin, Vereinigte Staaten, 53226
- Rekrutierung
- Versiti Wisconsin, Inc
-
Kontakt:
- Site Contact
-
Hauptermittler:
- Lisa Kreuziger
-
-
-
-
-
London, Vereinigtes Königreich, NW1 2PG
- Aktiv, nicht rekrutierend
- University College London Hospitals
-
London, Vereinigtes Königreich, E11BB
- Aktiv, nicht rekrutierend
- Barts Health NHS Trust, Royal London Hospital
-
London, Vereinigtes Königreich, W12 0HS
- Aktiv, nicht rekrutierend
- Imperial College Healthcare NHS Trust
-
-
East Midlands
-
Leicester, East Midlands, Vereinigtes Königreich, LE1 5WW
- Aktiv, nicht rekrutierend
- University Hospitals of Leicester NHS Trust
-
-
Hampshire
-
Southampton, Hampshire, Vereinigtes Königreich, SO16 6YD
- Aktiv, nicht rekrutierend
- Southampton General Hospital
-
-
London
-
Southwark, London, Vereinigtes Königreich, SE1 9RT
- Aktiv, nicht rekrutierend
- Guy's Hospital - Guy's & St. Thomas NHS Foundation Trust
-
-
Merseyside
-
Liverpool, Merseyside, Vereinigtes Königreich, L7 8XP
- Aktiv, nicht rekrutierend
- Royal Liverpool and Broadgreen University Hospitals NHS Trust
-
-
Scotland
-
Glasgow, Scotland, Vereinigtes Königreich, G312ER
- Aktiv, nicht rekrutierend
- Greater Glasgow Health Board
-
-
Staffordshire
-
Stoke-on-Trent, Staffordshire, Vereinigtes Königreich, ST4 6QG
- Aktiv, nicht rekrutierend
- University Hospitals of North Midlands NHS Trust, Royal Stoke University Hospital
-
-
Yorkshire
-
Leeds, Yorkshire, Vereinigtes Königreich, LS9 TF
- Aktiv, nicht rekrutierend
- Leeds Teaching Hospitals NHS Trust
-
-
Teilnahmekriterien
Zulassungskriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Studienberechtigte Geschlechter
Beschreibung
Key Inclusion Criteria:
- The participant has been diagnosed with ITP that has persisted for at least 12 months.
- The participant's diagnosis of ITP is supported by a prior response to an ITP therapy (not including a thrombopoietin receptor agonist [TPO-RA]), defined as having achieved a platelet count ≥50,000/μL.
- The participant has evidence of insufficient response or intolerance to at least 1 currently available first-line therapy for treatment of ITP (for example, corticosteroids), and at least 1 currently available second-line therapy for treatment of ITP (for example, TPO-RA, rituximab, fostamatinib, mycophenolate). Insufficient response to previous treatment is defined as failure to achieve a sustained platelet count of at least 50,000/μL or doubling of baseline platelet count after an appropriate course of prior ITP treatment. Intolerance is defined as a documented side effect causing discontinuation of the therapy.
- The participant has a mean platelet count of less than (<)30,000/μL.
- If the participant is receiving allowed standard-of-care treatment for ITP at screening, and continued use is intended, treatment may continue during the trial if the dose, and frequency have been stable for at least 4 weeks before receiving the first dose of IMP (i.e., Day 1), and are expected to remain stable throughout the trial.
- If the participant is an individual with potential for pregnancy, the participant is not pregnant as confirmed by negative human chorionic gonadotropin during screening, and before the first dose of trial intervention.
Key Exclusion Criteria:
-
The participant has secondary ITP.
-
The participant has had any thrombotic or embolic event within 12 months before signing the informed consent form (ICF).
-
The participant has had a splenectomy.
-
The participant has active infection with hepatitis B virus, hepatitis C virus, or human immunodeficiency virus (HIV).
-
History of malignancy (including myelodysplastic syndrome) within 5 years of signing the ICF, except for treated non-melanoma skin cancer or cervical carcinoma in situ.
-
In the opinion of the investigator, the participant has a serious medical or psychiatric illness that could potentially interfere with the completion of treatment according to this protocol.
-
The participant has received anti-cluster of differentiation (CD) 20 treatment within 12 months before screening, and either of the following applies:
- The last dose was received within 6 months before screening.
- The last dose was received between 6 and 12 months before screening, and the participant has a cluster of differentiation 19 positive (CD19+) count below the lower limit of normal.
-
The participant has received any monoclonal or polyclonal antibody for immunomodulation within 6 months before screening.
-
The participant has any prior exposure to mezagitamab or has been exposed to another investigational agent within 4 weeks or 5 half-lives, whichever is longer, before Day 1.
-
The participant has used anticoagulants (e.g., vitamin K antagonists, direct oral anticoagulants) within 3 weeks prior to the first dose of trial treatment.
-
The participant has received a live or live-attenuated vaccine within 4 weeks prior to the first dose of trial treatment or has any live or live-attenuated vaccine planned during the trial.
-
The participant has used the following immunosuppressive agents as specified prior to the first dose of trial treatment: alkylating agents (e.g., cyclophosphamide) within 8 weeks, vinca alkaloids (e.g., vincristine) within 4 weeks, sulfones (e.g., dapsone) within 3 weeks, antiproliferative agents: (e.g., mycophenolate mofetil, and azathioprine) within 2 weeks, and calcineurin inhibitors: (e.g., cyclosporine) within 2 weeks.
-
The participant has used intravenous immunoglobulin (IVIg), SC immunoglobulin, recombinant human thrombopoietin, anti-D immunoglobulin treatment, or efgartigimod within 4 weeks before signing the ICF or it is expected that any treatment for thrombocytopenia other than the participant's standard-of-care ITP therapy (e.g., rescue therapy, administration of blood products) may be used between screening, and Day 1.
-
The participant has a history of severe allergic or anaphylactic reactions to recombinant proteins or excipients used in the mezagitamab/placebo formulation.
Other protocol defined inclusion/exclusion criteria may apply.
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Behandlung
- Zuteilung: Zufällig
- Interventionsmodell: Parallele Zuordnung
- Maskierung: Vervierfachen
Anzahl der Arme
Waffen und Interventionen
Teilnehmergruppe / ArmTeilnehmergruppe / Arm |
Intervention / BehandlungIntervention / Behandlung |
|---|---|
|
Experimental: Mezagitamab
Participants will receive mezagitamab injection, SC, once weekly (QW). They will receive 8 weekly doses, followed by 8 weekly doses off, and then receive 8 more weekly doses. |
Mezagitamab injection administered SC.
Andere Namen:
|
|
Placebo-Komparator: Placebo
Participants will receive mezagitamab-matching placebo injection, SC, QW. They will receive 8 weekly doses, followed by 8 weekly doses off, and then receive 8 more weekly doses. |
Mezagitamab-matching placebo injection administered SC. |
Was misst die Studie?
Primäre Ergebnismessungen
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Percentage of Participants With Durable Platelet Response
Zeitfenster: Up to Week 24
|
Durable platelet response is defined as platelet count greater than or equal to (≥)50,000/microliter (μL) on at least 4 of the 6 weekly platelet measurements between Weeks 19 and 24. |
Up to Week 24
|
Sekundäre Ergebnismessungen
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Zeit bis zur ersten Thrombozytenzahl ≥50.000/μL
Zeitfenster: Bis Woche 24
|
Bis Woche 24
|
|
|
Prozentsatz der Teilnehmer, die eine Rettungstherapie erhalten
Zeitfenster: Bis Woche 24
|
Bis Woche 24
|
|
|
Änderung der ADA-Titer im Laufe der Zeit
Zeitfenster: Bis Tag 169
|
Bis Tag 169
|
|
|
Serumkonzentration von Mezagitamab während und nach der Intervention
Zeitfenster: Prädose am Tag 1 und zu mehreren Zeitpunkten nach der Dosierung bis zum Tag 169
|
Prädose am Tag 1 und zu mehreren Zeitpunkten nach der Dosierung bis zum Tag 169
|
|
|
Number of Participants With Anti-drug Antibodies (ADA)
Zeitfenster: Predose on Day 1 and at multiple time points post-dose up to Day 169
|
Predose on Day 1 and at multiple time points post-dose up to Day 169
|
|
|
Number of Participants With Neutralizing ADA
Zeitfenster: Predose on Day 1 and at multiple time points post-dose up to Day 169
|
Predose on Day 1 and at multiple time points post-dose up to Day 169
|
|
|
Cumulative Number of Weeks With a Platelet Count of ≥50,000/μL
Zeitfenster: Up to Week 24
|
The cumulative number of weeks in which the platelet count is ≥50,000/μL through Week 24. |
Up to Week 24
|
|
Cumulative Number of Weeks With a Platelet Count of ≥30,000/μL
Zeitfenster: Up to Week 24
|
The cumulative number of weeks in which the platelet count is ≥30,000/μL, and at least doubled from baseline through Week 24. |
Up to Week 24
|
|
Percentage of Participants With Complete Platelet Response
Zeitfenster: Up to Week 24
|
Complete platelet response is defined as a platelet count ≥100,000/μL on at least 2 visits through Week 24. |
Up to Week 24
|
|
Percentage of Participants With Platelet Response at Week 16
Zeitfenster: Week 16
|
Platelet response is defined as a platelet count ≥50,000/μL before investigational medicinal product (IMP) administration at the Week 16 visit. |
Week 16
|
|
Change from Baseline in the Symptoms Domain Score of the Immune Thrombocytopenia Patient Assessment Questionnaire (ITP-PAQ) at Weeks 16 and 24
Zeitfenster: Weeks 16 and 24
|
ITP-PAQ is a 44-item participant reported outcome (PRO) measure that assesses disease-specific health-related quality of life (HRQoL) that includes 10 domains: Symptoms, Fatigue/Sleep, Physical Health - Bother, Physical Health - Activity, Emotional Health - Psychological, Emotional Health - Fear, Overall Quality of Life (QoL), Social Activity, Women's Reproductive Health (including Fertility subscale, and Menstrual Symptoms subscale), and Work. The 6-item symptoms domain is scored from 0 to 100, with a positive change from baseline representing improvement of symptoms. |
Weeks 16 and 24
|
|
Change from Baseline in Physical Fatigue (Item 10) Score of the ITP-PAQ at Weeks 16 and 24
Zeitfenster: Weeks 16 and 24
|
ITP-PAQ is a 44-item participant reported outcome (PRO) measure that assesses disease-specific health-related quality of life (HRQoL) that includes 10 domains: Symptoms, Fatigue/Sleep, Physical Health - Bother, Physical Health - Activity, Emotional Health - Psychological, Emotional Health - Fear, Overall Quality of Life (QoL), Social Activity, Women's Reproductive Health (including Fertility subscale, and Menstrual Symptoms subscale), and Work. Physical fatigue is scored from 0 to 100, with a positive change from baseline representing improvement in physical fatigue. |
Weeks 16 and 24
|
|
Percentage of Participants With Bleeding Events
Zeitfenster: Up to Week 24
|
Bleeding events are defined as Grade ≥2 in the skin domain, or Grade ≥1 in the mucosal domain, or Grade ≥1 in the organ domain, in the immune thrombocytopenia-specific bleeding assessment tool (ITP-BAT) through Week 24. |
Up to Week 24
|
Mitarbeiter und Ermittler
Sponsor
Sponsor
Ermittler
Ermittler
- Studienleiter: Study Director, Takeda
Publikationen und hilfreiche Links
Allgemeine Veröffentlichungen
Nützliche Links
- <p>Click here to ask Takeda's chatbot for comprehensive and easy-to-understand information about clinical trials - even across products and indications - in your local language.</p>
- <p>Click here for more information about this trial in easy-to-understand language, including a Plain Language Summary of the results if the trial has been completed.</p>
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn (Tatsächlich)
Studienbeginn
Primärer Abschluss (Geschätzt)
Primärer Abschluss
Studienabschluss (Geschätzt)
Studienabschluss
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Tatsächlich)
Zuerst gepostet
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Tatsächlich)
Letztes Update gepostet
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Zusätzliche relevante MeSH-Bedingungen
- Pathologische Prozesse
- Blutgerinnungsstörungen
- Thrombotische Mikroangiopathien
- Pathologische Zustände, Anzeichen und Symptome
- Anzeichen und Symptome
- Hämische und lymphatische Krankheiten
- Zytopenie
- Thrombozytopenie
- Purpura
- Purpura, thrombozytopenisch, idiopathisch
- Purpura, Thrombozytopenie
- Autoimmunerkrankungen
- Hämatologische Erkrankungen
- Blutung
- Erkrankungen des Immunsystems
- Erkrankungen der Blutplättchen
- Hämorrhagische Störungen
- Hautmanifestationen
Andere Studien-ID-Nummern
Andere Studien-ID-Nummern
- TAK-079-3002
- 2024-514401-54-00 (Ctis)
- jRCT2031240667 (Registrierungskennung: jRCT)
Plan für individuelle Teilnehmerdaten (IPD)
Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?
Beschreibung des IPD-Plans
Takeda provides access to the de-identified individual participant data (IPD) for eligible studies to aid qualified researchers in addressing legitimate scientific objectives (Takeda's data sharing commitment is available on https://clinicaltrials.takeda.com/takedas-commitment?commitment=5). These IPDs will be provided in a secure research environment following approval of a data sharing request, and under the terms of a data sharing agreement.
IPD-Sharing-Zugriffskriterien
IPD from eligible studies will be shared with qualified researchers according to the criteria and process described on https://vivli.org/ourmember/takeda/. For approved requests, the researchers will be provided access to anonymized data (to respect patient privacy in line with applicable laws and regulations) and with information necessary to address the research objectives under the terms of a data sharing agreement.
Art der unterstützenden IPD-Freigabeinformationen
- STUDIENPROTOKOLL
- SAFT
- ICF
- CSR
Arzneimittel- und Geräteinformationen, Studienunterlagen
Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt
Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt
Diese Informationen wurden ohne Änderungen direkt von der Website clinicaltrials.gov abgerufen. Wenn Sie Ihre Studiendaten ändern, entfernen oder aktualisieren möchten, wenden Sie sich bitte an register@clinicaltrials.gov. Sobald eine Änderung auf clinicaltrials.gov implementiert wird, wird diese automatisch auch auf unserer Website aktualisiert .