PMID- 30402880 OWN - NLM STAT- MEDLINE DCOM- 20200109 LR - 20200309 IS - 1532-6535 (Electronic) IS - 0009-9236 (Print) IS - 0009-9236 (Linking) VI - 105 IP - 4 DP - 2019 Apr TI - M281, an Anti-FcRn Antibody: Pharmacodynamics, Pharmacokinetics, and Safety Across the Full Range of IgG Reduction in a First-in-Human Study. PG - 1031-1039 LID - 10.1002/cpt.1276 [doi] AB - M281 is a fully human, anti-neonatal Fc receptor (FcRn) antibody that inhibits FcRn-mediated immunoglobulin G (IgG) recycling to decrease pathogenic IgG while preserving IgG production. A randomized, double-blind, placebo-controlled, first-in-human study with 50 normal healthy volunteers was designed to probe safety and the physiological maximum for reduction of IgG. Intravenous infusion of single ascending doses up to 60 mg/kg induced dose-dependent serum IgG reductions, which were similar across all IgG subclasses. Multiple weekly doses of 15 or 30 mg/kg achieved mean IgG reductions of approximately 85% from baseline and maintained IgG reductions >/=75% from baseline for up to 24 days. M281 was well tolerated, with no serious or severe adverse events (AEs), few moderate AEs, and a low incidence of infection-related AEs similar to placebo treatment. The tolerability and consistency of M281 pharmacokinetics and pharmacodynamics support further evaluation of M281 in diseases mediated by pathogenic IgG. CI - (c) 2018 The Authors Clinical Pharmacology & Therapeutics published by Wiley Periodicals, Inc. on behalf of American Society for Clinical Pharmacology and Therapeutics. FAU - Ling, Leona E AU - Ling LE AD - Momenta Pharmaceuticals, Inc., Cambridge, Massachusetts, USA. FAU - Hillson, Jan L AU - Hillson JL AD - Momenta Pharmaceuticals, Inc., Cambridge, Massachusetts, USA. FAU - Tiessen, Renger G AU - Tiessen RG AD - PRA Health Sciences, Groningen, The Netherlands. FAU - Bosje, Tjerk AU - Bosje T AD - PRA Health Sciences, Groningen, The Netherlands. FAU - van Iersel, Mattheus Paulus AU - van Iersel MP AD - PRA Health Sciences, Groningen, The Netherlands. FAU - Nix, Darrell J AU - Nix DJ AD - Drug Development Consulting, North New Portland, Maine, USA. FAU - Markowitz, Lynn AU - Markowitz L AD - Momenta Pharmaceuticals, Inc., Cambridge, Massachusetts, USA. FAU - Cilfone, Nicholas A AU - Cilfone NA AD - Momenta Pharmaceuticals, Inc., Cambridge, Massachusetts, USA. FAU - Duffner, Jay AU - Duffner J AD - Momenta Pharmaceuticals, Inc., Cambridge, Massachusetts, USA. FAU - Streisand, James B AU - Streisand JB AD - Momenta Pharmaceuticals, Inc., Cambridge, Massachusetts, USA. FAU - Manning, Anthony M AU - Manning AM AD - Momenta Pharmaceuticals, Inc., Cambridge, Massachusetts, USA. FAU - Arroyo, Santiago AU - Arroyo S AD - Momenta Pharmaceuticals, Inc., Cambridge, Massachusetts, USA. LA - eng PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20181204 PL - United States TA - Clin Pharmacol Ther JT - Clinical pharmacology and therapeutics JID - 0372741 RN - 0 (Antibodies) RN - 0 (Histocompatibility Antigens Class I) RN - 0 (Immunoglobulin G) RN - 0 (Receptors, Fc) RN - TW3XAW0RCY (Fc receptor, neonatal) SB - IM MH - Adult MH - Antibodies/adverse effects/*metabolism/*therapeutic use MH - Double-Blind Method MH - Female MH - Healthy Volunteers MH - Histocompatibility Antigens Class I/*metabolism MH - Humans MH - Immunoglobulin G/*metabolism MH - Infusions, Intravenous/methods MH - Male MH - Receptors, Fc/*metabolism MH - Young Adult PMC - PMC6587432 COIS- L.E.L., L.M., J.D., A.M.M., and S.A. are full-time employees of Momenta Pharmaceuticals and may own stock or stock options. J.L.H. was an employee of Momenta Pharmaceuticals when the study was designed and conducted and subsequently a paid consultant of Momenta Pharmaceuticals and may own stock or stock options of Momenta Pharmaceuticals. N.A.C. was a full-time employee of Momenta Pharmaceuticals during the execution of the study and subsequently a paid consultant of Momenta Pharmaceuticals, and owned stock, restricted stock, and stock options in Momenta Pharmaceuticals during manuscript preparation. R.G.T., T.B., and M.P.v.I. are full-time employees of PRA Health Sciences and may own stock or stock options in PRA Health Sciences. D.J.N. was principal of Drug Development Consulting, currently is a full-time employee of Certara Strategic Consulting and is a paid consultant of Momenta Pharmaceuticals. J.B.S. is principal at Streisand Biomedical Consulting and a paid consultant of Momenta Pharmaceuticals. EDAT- 2018/11/08 06:00 MHDA- 2020/01/10 06:00 PMCR- 2018/12/04 CRDT- 2018/11/08 06:00 PHST- 2018/08/17 00:00 [received] PHST- 2018/10/19 00:00 [accepted] PHST- 2018/11/08 06:00 [pubmed] PHST- 2020/01/10 06:00 [medline] PHST- 2018/11/08 06:00 [entrez] PHST- 2018/12/04 00:00 [pmc-release] AID - CPT1276 [pii] AID - 10.1002/cpt.1276 [doi] PST - ppublish SO - Clin Pharmacol Ther. 2019 Apr;105(4):1031-1039. doi: 10.1002/cpt.1276. Epub 2018 Dec 4.