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Title: A Prospective, Multicenter, Randomized Phase II Study to Evaluate the Efficacy and Safety of Eculizumab in Patients with Guillain-Barré Syndrome (GBS): Protocol of Japanese Eculizumab Trial for GBS (JET-GBS).
Author: Yamaguchi N, Misawa S, Sato Y, Nagashima K, Katayama K, Sekiguchi Y, Iwai Y, Amino H, Suichi T, Yokota T, Nishida Y, Kohara N, Hirata K, Nishiyama K, Yabe I, Kaida KI, Suzuki N, Nodera H, Tsuji S, Koike H, Kira JI, Hanaoka H, Kusunoki S, Kuwabara S, JET-GBS GroupDepartment of Neurology and Neurological Science, Tokyo Medical and Dental University, Tokyo, Japan.Department of Neurology, Kobe City Medical Centre General Hospital, Kobe, Japan.Department of Neurology, Dokkyo Medical University, Tochigi, Japan.Department of Neurology, Kitasato University School of Medicine, Kanagawa, Japan.Department of Neurology, Hokkaido University Graduate School of Medicine, Sapporo, Japan.Division of Neurology, Department of Internal Medicine, National Defense Medical College, Saitama, Japan.Department of Neurology, Keio University School of Medicine, Tokyo, Japan.Department of Clinical Neuroscience, Graduate School of Medical Sciences, Tokushima University, Tokushima, Japan.Department of Neurology, The University of Tokyo Graduate School of Medicine, Tokyo, Japan.Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.Department of Neurology, Faculty of Medicine, Kindai University, Osaka-Sayama, Japan..
Journal: JMIR Res Protoc; 2016 Nov 07; 5(4):e210. PubMed ID: 27821382.
Abstract:
BACKGROUND: Guillain-Barré syndrome (GBS) is an immune-mediated neuropathy that causes acute flaccid paralysis. Immunoglobulin and plasma exchange are established treatments for GBS; however, a substantial number of patients, particularly those with severe disease, have poor recovery and residual deficits. Recent studies suggest that complement activation plays a pivotal role in GBS-associated axonal degeneration, and eculizumab is a humanized monoclonal antibody that specifically binds to complement component 5 and potently inhibits complement activation. OBJECTIVE: This clinical trial aims to evaluate the efficacy and safety of eculizumab, a humanized monoclonal antibody directed against complement component 5, for treatment of GBS. METHODS: The Japanese Eculizumab Trial for GBS (JET-GBS) is a prospective, multicenter, placebo-controlled, double-blind, randomized phase II study conducted at 13 tertiary neurology centers and is funded by the Japan Agency for Medical Research and Development. A total of 33 GBS patients unable to walk independently within 2 weeks from symptom onset (Hughes functional grade 3-5) were randomized at a 2:1 ratio to receive either intravenous eculizumab (900 mg/day) or placebo once weekly for 4 weeks, followed by 20 weeks of follow-up. The primary endpoint for efficacy is the proportion of patients who regain their ability to walk without aid at 4 weeks after the first dose of the study treatment, while primary safety outcomes are the incidence of adverse events and serious adverse events during the trial. RESULTS: Enrollment for the trial began in August 2015. This trial is still ongoing. All participants have been enrolled, and follow-up will be completed in October 2016. CONCLUSIONS: This study is the first to investigate the efficacy and safety of eculizumab for GBS. In case of a positive result, we will plan a phase III trial to investigate this issue in a larger number of patients. CLINICALTRIAL: UMIN Clinical Trials Registry UMIN 000018171; https:/upload.umin.ac.jp/cgi-open-bin/ctr/ctr.cgi?function= brows&action=brows&type=summary&language=J&recptno=R000020978 (Archived by WebCite at http://www.webcitation.org/ 6lTiG8ltG). Clinical Trials.gov NCT02493725; https://clinicaltrials.gov/ct2/show/NCT02493725 (Archived by WebCite at http://www.webcitation.org/6lVJZXKSL).

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