Anliker-Ort M, Dingemanse J, Farine H, Groenen P, Kornberger R, van den Anker J, Kaufmann P. Multiple-ascending doses of ACT-1014-6470, an oral complement factor 5a receptor 1 (C5a
1 receptor) antagonist: Tolerability, pharmacokinetics and target engagement.
Br J Clin Pharmacol 2023;
89:380-389. [PMID:
36000981 DOI:
10.1111/bcp.15508]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 08/08/2022] [Accepted: 08/15/2022] [Indexed: 11/28/2022] Open
Abstract
AIMS
Targeting the complement factor 5a receptor 1 (C5a1 receptor) offers potential to treat various autoimmune diseases. The C5a1 receptor antagonist ACT-1014-6470 was well tolerated in a single-ascending dose study in healthy subjects. This double-blind, randomized, placebo-controlled study aimed to investigate the safety, tolerability, pharmacokinetics (PK) and target engagement of multiple-ascending doses of ACT-1014-6470.
METHODS
Per dose level, 10 healthy male and female subjects of nonchildbearing potential (1:1 sex ratio) were enrolled to assess 30, 60 and 120 mg ACT-1014-6470 administered twice daily for 4.5 days under fed conditions. Adverse events, clinical laboratory data, vital signs, electrocardiogram and PK blood samples were collected up to 120 h post last dose and ex vivo stimulated matrix metalloproteinase 9 was quantified as target engagement biomarker. At the 60-mg dose level, PK samples were collected until 8 weeks post last dose.
RESULTS
The total adverse event number was 57 and no treatment-related safety pattern was apparent. At steady state, ACT-1014-6470 reached maximum plasma concentrations after 2-3 h and the half-life estimated up to Day 10 was 115-146 h across dose levels. Exposure parameters increased dose-proportionally, steady state was attained between Day 3-5, and ACT-1014-6470 accumulated 2-fold. At the 60-mg dose level, ACT-1014-6470 was quantifiable until 8 weeks after the last dose. Matrix metalloproteinase 9 release was suppressed to endogenous background concentrations up to the last sampling time point, confirming sustained target engagement of ACT-1014-6470.
CONCLUSION
The compound was generally safe and well tolerated at all dose levels, warranting further clinical investigations.
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