PMID- 28681650 OWN - NLM STAT- MEDLINE DCOM- 20180705 LR - 20191210 IS - 1439-7609 (Electronic) IS - 1439-7595 (Linking) VI - 28 IP - 1 DP - 2018 Jan TI - Safety, pharmacokinetics, and efficacy of E6011, an antifractalkine monoclonal antibody, in a first-in-patient phase 1/2 study on rheumatoid arthritis. PG - 58-65 LID - 10.1080/14397595.2017.1337056 [doi] AB - OBJECTIVE: Fractalkine (CX3CL1/FKN) is a chemokine that regulates chemotaxis and adhesion of CX3C chemokine receptor 1 (CX3CR1)-expressing inflammatory cells. We conducted the first phase 1/2, open-label, multiple ascending dose study of E6011, a humanized anti-FKN monoclonal antibody, in Japanese rheumatoid arthritis (RA) patients (clinicaltrial.gov identifier: NCT02196558). METHODS: Active RA patients with an inadequate response or intolerance to methotrexate or tumor necrosis factor (TNF) inhibitor received E6011 at week 0, 1, 2, and thereafter every 2 weeks for 12 weeks. RESULTS: Twelve, 15, and 10 subjects were enrolled in the 100, 200, and 400 mg cohorts, respectively. No severe adverse events (AEs) or deaths occurred, and no major differences were observed in the incidence or severity of AEs across the cohorts. Serum E6011 concentrations increased dose dependently. American College of Rheumatology (ACR) 20, 50, and 70 responses at week 12 were 75.0%, 33.3%, and 8.3% in the 100 mg cohort; 66.7%, 20.0%, and 13.3% in the 200 mg cohort; and 60.0%, 30.0%, and 20.0% in the 400 mg cohort, respectively. CONCLUSIONS: E6011 appeared to be safe and well tolerated in RA patients during this 12-week treatment period, suggesting that E6011 has an effective clinical response in active RA patients. FAU - Tanaka, Yoshiya AU - Tanaka Y AD - a First Department of Internal Medicine , University of Occupational and Environmental Health , Kitakyushu , Japan. FAU - Takeuchi, Tsutomu AU - Takeuchi T AD - b Division of Rheumatology, Department of Internal Medicine , Keio University School of Medicine , Tokyo , Japan. FAU - Umehara, Hisanori AU - Umehara H AD - c Division of Rheumatology and Immunology , Nagahama City Hospital , Shiga , Japan. FAU - Nanki, Toshihiro AU - Nanki T AD - d Division of Rheumatology, Department of Internal Medicine , Toho University School of Medicine , Tokyo , Japan. FAU - Yasuda, Nobuyuki AU - Yasuda N AD - e KAN Research Institute, Inc. , Kobe , Japan. FAU - Tago, Fumitoshi AU - Tago F AD - f Eisai Co., Ltd. , Tokyo , Japan. FAU - Kawakubo, Makoto AU - Kawakubo M AD - f Eisai Co., Ltd. , Tokyo , Japan. FAU - Kitahara, Yasumi AU - Kitahara Y AD - f Eisai Co., Ltd. , Tokyo , Japan. FAU - Hojo, Seiichiro AU - Hojo S AD - f Eisai Co., Ltd. , Tokyo , Japan. FAU - Kawano, Tetsu AU - Kawano T AD - e KAN Research Institute, Inc. , Kobe , Japan. FAU - Imai, Toshio AU - Imai T AD - e KAN Research Institute, Inc. , Kobe , Japan. LA - eng SI - ClinicalTrials.gov/NCT02196558 PT - Clinical Trial, Phase I PT - Clinical Trial, Phase II PT - Journal Article PT - Multicenter Study DEP - 20170706 PL - England TA - Mod Rheumatol JT - Modern rheumatology JID - 100959226 RN - 0 (Antibodies, Monoclonal) RN - 0 (Antibodies, Monoclonal, Humanized) RN - 0 (Antirheumatic Agents) RN - 0 (Chemokine CX3CL1) RN - G8NT4Q571B (quetmolimab) SB - IM MH - Adult MH - Antibodies, Monoclonal/*adverse effects/immunology/pharmacokinetics/therapeutic use MH - Antibodies, Monoclonal, Humanized/*adverse effects/immunology/pharmacokinetics/therapeutic use MH - Antirheumatic Agents/*adverse effects/immunology/pharmacokinetics/therapeutic use MH - Arthritis, Rheumatoid/*drug therapy MH - Chemokine CX3CL1/*immunology MH - Female MH - Humans MH - Male MH - Middle Aged OTO - NOTNLM OT - E6011 OT - first-in-patient OT - fractalkine OT - monoclonal antibody OT - rheumatoid arthritis EDAT- 2017/07/07 06:00 MHDA- 2018/07/06 06:00 CRDT- 2017/07/07 06:00 PHST- 2017/07/07 06:00 [pubmed] PHST- 2018/07/06 06:00 [medline] PHST- 2017/07/07 06:00 [entrez] AID - 10.1080/14397595.2017.1337056 [doi] PST - ppublish SO - Mod Rheumatol. 2018 Jan;28(1):58-65. doi: 10.1080/14397595.2017.1337056. Epub 2017 Jul 6.