PMID- 32651105 OWN - NLM STAT- MEDLINE DCOM- 20210607 LR - 20210607 IS - 1873-569X (Electronic) IS - 0923-1811 (Linking) VI - 99 IP - 2 DP - 2020 Aug TI - Safety, tolerability and efficacy of repeated intravenous infusions of KHK4083, a fully human anti-OX40 monoclonal antibody, in Japanese patients with moderate to severe atopic dermatitis. PG - 82-89 LID - S0923-1811(20)30201-2 [pii] LID - 10.1016/j.jdermsci.2020.06.005 [doi] AB - BACKGROUND: KHK4083, a fully human anti-OX40 monoclonal antibody, is a potential novel therapeutic option for moderate to severe atopic dermatitis (AD), targeting the immunopathogenic pathways. OBJECTIVE: Assess the safety and tolerability of repeated doses of KHK4083 in patients with moderate to severe AD, and investigate the pharmacokinetics and immunogenicity of KHK4083. Additionally, assess the clinical efficacy and pharmacodynamics as exploratory objectives. METHODS: In this phase 1, single-center, open-label, repeated-dose study, a total of 22 patients received KHK4083 10 mg/kg IV on Day 1, Day 15 and Day 29, and were followed until Day 155. RESULTS: There were no deaths, serious adverse events (SAEs), or discontinuations due to adverse events (AEs). Common treatment-emergent AEs were mild or moderate pyrexia (11 patients, 50.0 %), and chills (8 patients, 36.4 %). No clinically meaningful changes in the laboratory values, vital signs, and electrocardiogram recordings were observed. The C(max) was 267 +/- 53 mug/mL and the t(1/2) was 303 +/- 88 h at Day 29. The overall assessment of antibodies against KHK4083 (immunogenicity) showed low positive responses. Continued improvement in the Eczema Area and Severity Index (EASI) and Investigator's Global Assessment (IGA) scores were observed throughout the study. The mean and median percent changes in thymus and activation-regulated chemokine (TARC) continued to decrease over time to -70.4 and -78.8 % until Day 155. CONCLUSION: Repeated intravenous infusion of KHK4083 had an acceptable safety profile in patients with moderate to severe AD. Sustained improvement in the symptoms of AD was observed after completion of KHK4083 treatment. CI - Copyright (c) 2020 Japanese Society for Investigative Dermatology. Published by Elsevier B.V. All rights reserved. FAU - Nakagawa, Hidemi AU - Nakagawa H AD - Department of Dermatology, The Jikei University School of Medicine, Tokyo, Japan. Electronic address: hidemi@jikei.ac.jp. FAU - Iizuka, Hajime AU - Iizuka H AD - Medical Corporation Kojinkai Hosui Sogo Medical Clinic, Sapporo, Japan. FAU - Nemoto, Osamu AU - Nemoto O AD - Medical Corporation Kojinkai Hosui Sogo Medical Clinic, Sapporo, Japan. FAU - Shimabe, Munetake AU - Shimabe M AD - Kyowa Kirin Co., Ltd, Tokyo, Japan. FAU - Furukawa, Yasunobu AU - Furukawa Y AD - Kyowa Kirin Co., Ltd, Tokyo, Japan. FAU - Kikuta, Natsuko AU - Kikuta N AD - Kyowa Kirin Co., Ltd, Tokyo, Japan. FAU - Ootaki, Kenji AU - Ootaki K AD - Kyowa Kirin Co., Ltd, Tokyo, Japan. LA - eng PT - Clinical Trial, Phase I PT - Journal Article DEP - 20200613 PL - Netherlands TA - J Dermatol Sci JT - Journal of dermatological science JID - 9011485 RN - 0 (Antibodies, Monoclonal, Humanized) RN - 0 (KHK4083) RN - 0 (OX40 Ligand) RN - 0 (TNFSF4 protein, human) SB - IM MH - Adult MH - Antibodies, Monoclonal, Humanized/administration & dosage/*adverse effects MH - Chills/chemically induced/*epidemiology/immunology MH - Dermatitis, Atopic/diagnosis/*drug therapy/immunology MH - Drug Administration Schedule MH - Female MH - Fever/chemically induced/*epidemiology/immunology MH - Humans MH - Infusions, Intravenous MH - Japan MH - Male MH - Middle Aged MH - OX40 Ligand/antagonists & inhibitors/immunology MH - Severity of Illness Index MH - Treatment Outcome OTO - NOTNLM OT - Atopic dermatitis OT - OX40 OT - Phase 1 COIS- Declaration of Competing Interest H.N, the consultant of this study, received consultant fees, research grants, and speaker honoraria from for Kyowa Kirin Co., Ltd. H.I and O.N are the investigators of this study and declares no conflict of interests. M.S, Y.F, N.K and K.O are employees of Kyowa Kirin Co., Ltd. This work was funded and supported by Kyowa Kirin Co., Ltd. EDAT- 2020/07/12 06:00 MHDA- 2021/06/08 06:00 CRDT- 2020/07/12 06:00 PHST- 2020/02/19 00:00 [received] PHST- 2020/06/04 00:00 [revised] PHST- 2020/06/09 00:00 [accepted] PHST- 2020/07/12 06:00 [pubmed] PHST- 2021/06/08 06:00 [medline] PHST- 2020/07/12 06:00 [entrez] AID - S0923-1811(20)30201-2 [pii] AID - 10.1016/j.jdermsci.2020.06.005 [doi] PST - ppublish SO - J Dermatol Sci. 2020 Aug;99(2):82-89. doi: 10.1016/j.jdermsci.2020.06.005. Epub 2020 Jun 13.