PMID- 35506164 OWN - NLM STAT- MEDLINE DCOM- 20220718 LR - 20221014 IS - 1752-8062 (Electronic) IS - 1752-8054 (Print) IS - 1752-8054 (Linking) VI - 15 IP - 7 DP - 2022 Jul TI - A phase I study to evaluate safety, pharmacokinetics, and pharmacodynamics of respiratory syncytial virus neutralizing monoclonal antibody MK-1654 in healthy Japanese adults. PG - 1753-1763 LID - 10.1111/cts.13290 [doi] AB - Respiratory syncytial virus (RSV) is the leading cause of lower respiratory tract infection among all infants worldwide and remains a significant cause of morbidity and mortality. To address this unmet medical need, MK-1654, a half-life extended RSV neutralizing monoclonal antibody, is in clinical development for the prevention of RSV disease in infants. This was a phase I, randomized, placebo-controlled, single-site, double-blind trial of MK-1654 in 44 healthy Japanese adults. The safety, tolerability, pharmacokinetics, antidrug antibodies (ADAs), and serum neutralizing antibody (SNA) titers against RSV were evaluated for 1 year after a single intramuscular (i.m.) or intravenous (i.v.) dose of MK-1654 or placebo in five groups (100 mg i.m., 300 mg i.m., 300 mg i.v., 1000 mg i.v., or placebo). MK-1654 was generally well-tolerated in Japanese adults. There were no serious drug-related adverse events (AEs) reported in any MK-1654 recipient and no discontinuations due to any AEs in the study. The half-life of MK-1654 ranged from 76 to 91 days across dosing groups. Estimated bioavailability was 86% for 100 mg i.m. and 77% for 300 mg i.m. One participant out of 33 (3.0%) developed detectable ADA with no apparent associated AEs. The RSV SNA titers increased in a dose-dependent manner among participants who received MK-1654. These data support the development of MK-1654 for use in Japanese infants. CI - (c) 2022 Merck Sharp & Dohme LLC. Clinical and Translational Science published by Wiley Periodicals LLC on behalf of American Society for Clinical Pharmacology and Therapeutics. FAU - Orito, Yuji AU - Orito Y AD - MSD K.K., Tokyo, Japan. FAU - Otani, Naoyuki AU - Otani N AD - Oita University, Oita, Japan. FAU - Matsumoto, Yuki AU - Matsumoto Y AD - MSD K.K., Tokyo, Japan. FAU - Fujimoto, Katsukuni AU - Fujimoto K AD - MSD K.K., Tokyo, Japan. FAU - Oshima, Nobuyuki AU - Oshima N AD - MSD K.K., Tokyo, Japan. FAU - Maas, Brian M AU - Maas BM AD - Merck and Co., Inc., Rahway, New Jersey, USA. FAU - Caro, Luzelena AU - Caro L AD - Merck and Co., Inc., Rahway, New Jersey, USA. FAU - Aliprantis, Antonios O AU - Aliprantis AO AD - Merck and Co., Inc., Rahway, New Jersey, USA. AD - Flagship Pioneering, Boston, Massachusetts, USA. FAU - Cox, Kara S AU - Cox KS AD - Merck and Co., Inc., Rahway, New Jersey, USA. FAU - Tokumaru, Osamu AU - Tokumaru O AD - Oita University, Oita, Japan. FAU - Kodama, Masaaki AU - Kodama M AD - Oita University, Oita, Japan. FAU - Kudo, Hideo AU - Kudo H AD - Oita University, Oita, Japan. FAU - Imai, Hiromitsu AU - Imai H AUID- ORCID: 0000-0001-7805-1180 AD - Oita University, Oita, Japan. FAU - Uemura, Naoto AU - Uemura N AD - Oita University, Oita, Japan. LA - eng PT - Clinical Trial, Phase I PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20220517 PL - United States TA - Clin Transl Sci JT - Clinical and translational science JID - 101474067 RN - 0 (Antibodies, Monoclonal) RN - 0 (Antibodies, Monoclonal, Humanized) SB - IM MH - Adult MH - Antibodies, Monoclonal/adverse effects MH - Antibodies, Monoclonal, Humanized MH - Humans MH - Infant MH - Japan MH - *Respiratory Syncytial Virus Infections/drug therapy/prevention & control MH - *Respiratory Syncytial Virus, Human PMC - PMC9283748 COIS- Y.O., Y.M., K.F., N.O., B.M.M., L.C., and A.O.A. are employees (or were at the time of the study) of Merck Sharp & Dohme LLC, a subsidiary of Merck & Co., Inc., Rahway, NJ, USA, and may hold stock in Merck & Co., Inc., Rahway, NJ, USA. K.S.C. is an employee of Merck Sharp & Dohme LLC., a subsidiary of Merck & Co., Inc., Rahway, NJ, USA, may hold stock in Merck & Co., Inc., Rahway, NJ, USA, and is named on an issued patent related to the discovery of the RSV antibody. N.U. reports payments as a Primary Investigator for the study, is a paid consultant to MSD K.K. for general clinical pharmacology matters at the time of the conduct study, and holds stock in Merck & Co., Inc., Rahway, NJ, USA. All other authors declared no competing interest for this work. As an Associate Editor for Clinical & Translational Science, Naoto Uemara was not involved in the review or decision process for this paper. EDAT- 2022/05/05 06:00 MHDA- 2022/07/19 06:00 PMCR- 2022/07/01 CRDT- 2022/05/04 02:33 PHST- 2022/03/31 00:00 [revised] PHST- 2021/12/06 00:00 [received] PHST- 2022/04/14 00:00 [accepted] PHST- 2022/05/05 06:00 [pubmed] PHST- 2022/07/19 06:00 [medline] PHST- 2022/05/04 02:33 [entrez] PHST- 2022/07/01 00:00 [pmc-release] AID - CTS13290 [pii] AID - 10.1111/cts.13290 [doi] PST - ppublish SO - Clin Transl Sci. 2022 Jul;15(7):1753-1763. doi: 10.1111/cts.13290. Epub 2022 May 17.