PMID- 24559157 OWN - NLM STAT- MEDLINE DCOM- 20150916 LR - 20220317 IS - 1478-6362 (Electronic) IS - 1478-6354 (Print) IS - 1478-6354 (Linking) VI - 16 IP - 1 DP - 2014 Feb 24 TI - Dose-escalation of human anti-interferon-alpha receptor monoclonal antibody MEDI-546 in subjects with systemic sclerosis: a phase 1, multicenter, open label study. PG - R57 LID - 10.1186/ar4492 [doi] AB - INTRODUCTION: Type I interferons (IFNs) are implicated in the pathogenesis of systemic sclerosis (SSc). MEDI-546 is an investigational human monoclonal antibody directed against the type I IFN receptor. This Phase 1 study evaluated the safety/tolerability, pharmacokinetics (PK), immunogenicity, and pharmacodynamics (PD) of single and multiple intravenous doses of MEDI-546 in adults with SSc. METHODS: Subjects (>/=18 years) with SSc were enrolled in an open-label, dose-escalation study to receive single (0.1, 0.3, 1.0, 3.0, 10.0, or 20.0 mg/kg), or 4 weekly intravenous doses (0.3, 1.0, or 5.0 mg/kg/week) of MEDI-546. Subjects were followed for 12 weeks. Safety assessments included adverse events (AEs), laboratory results, and viral monitoring. Blood samples were collected from all subjects for determination of PK, presence of anti-drug antibodies (ADAs), and expression of type I IFN-inducible genes. RESULTS: Of 34 subjects (mean age 47.4 years), 32 completed treatment and 33 completed the study. Overall, 148 treatment-emergent AEs (TEAEs) were reported (68.9% mild, 27.7% moderate). TEAEs included one grade 1 infusion reaction (5.0 mg/kg/week multiple dose). Of 4 treatment-emergent serious AEs (skin ulcer, osteomyelitis, vertigo, and chronic myelogenous leukemia (CML)), only CML (1.0 mg/kg/week multiple dose) was considered possibly treatment-related. MEDI-546 exhibited non-linear PK at lower doses. ADAs were detected in 5 subjects; no apparent impact on PK was observed. Peak inhibition of the type I IFN signature in whole blood was achieved within 1 day and in skin after 7 days. CONCLUSION: The safety/tolerability, PK, and PD profiles observed in this study support further clinical development of MEDI-546. TRIAL REGISTRATION: ClinicalTrials.gov NCT00930683. FAU - Goldberg, Avram AU - Goldberg A FAU - Geppert, Thomas AU - Geppert T FAU - Schiopu, Elena AU - Schiopu E FAU - Frech, Tracy AU - Frech T FAU - Hsu, Vivien AU - Hsu V FAU - Simms, Robert W AU - Simms RW FAU - Peng, Stanford L AU - Peng SL FAU - Yao, Yihong AU - Yao Y FAU - Elgeioushi, Nairouz AU - Elgeioushi N FAU - Chang, Linda AU - Chang L FAU - Wang, Bing AU - Wang B FAU - Yoo, Stephen AU - Yoo S LA - eng SI - ClinicalTrials.gov/NCT00930683 GR - KL2 TR001065/TR/NCATS NIH HHS/United States GR - P50 AR060780/AR/NIAMS NIH HHS/United States GR - UL1 TR001067/TR/NCATS NIH HHS/United States PT - Clinical Trial, Phase I PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't DEP - 20140224 PL - England TA - Arthritis Res Ther JT - Arthritis research & therapy JID - 101154438 RN - 0 (Antibodies, Monoclonal) RN - 0 (Antibodies, Monoclonal, Humanized) RN - 156986-95-7 (Receptor, Interferon alpha-beta) RN - 38RL9AE51Q (anifrolumab) SB - IM MH - Adult MH - Antibodies, Monoclonal/*administration & dosage/adverse effects/pharmacokinetics MH - Antibodies, Monoclonal, Humanized MH - Dose-Response Relationship, Drug MH - Female MH - Humans MH - Male MH - Middle Aged MH - Receptor, Interferon alpha-beta/*immunology MH - Scleroderma, Systemic/*drug therapy PMC - PMC3978926 EDAT- 2014/02/25 06:00 MHDA- 2015/09/17 06:00 PMCR- 2014/02/24 CRDT- 2014/02/25 06:00 PHST- 2013/04/29 00:00 [received] PHST- 2014/01/29 00:00 [accepted] PHST- 2014/02/25 06:00 [entrez] PHST- 2014/02/25 06:00 [pubmed] PHST- 2015/09/17 06:00 [medline] PHST- 2014/02/24 00:00 [pmc-release] AID - ar4492 [pii] AID - 10.1186/ar4492 [doi] PST - epublish SO - Arthritis Res Ther. 2014 Feb 24;16(1):R57. doi: 10.1186/ar4492.