PRTX-100 and methotrexate in patients with active rheumatoid arthritis: A Phase Ib randomized, double-blind, placebo-controlled, dose-escalation study

2014 ◽  
Vol 3 (6) ◽  
pp. 477-486 ◽  
Author(s):  
Edward Bernton ◽  
William Gannon ◽  
William Kramer ◽  
Eduard Kranz
Keyword(s):  
Rheumatoid Arthritis ◽  
Dose Escalation ◽  
Active Rheumatoid Arthritis ◽  
Dose Escalation Study ◽  
Double Blind ◽  
Double Blind Placebo ◽  
Phase Ib

Toreforant, A Histamine H4 Receptor Antagonist, in Patients with Active Rheumatoid Arthritis Despite Methotrexate Therapy: Results of 2 Phase II Studies

2016 ◽  
Vol 43 (9) ◽  
pp. 1637-1642 ◽  
Author(s):  
Robin L. Thurmond ◽  
Andrew Greenspan ◽  
Waldemar Radziszewski ◽  
Xie L. Xu ◽  
Ye Miao ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Receptor Antagonist ◽  
Active Rheumatoid Arthritis ◽  
Dose Range ◽  
Joint Disease ◽  
Double Blind ◽  
Once Daily ◽  
Double Blind Placebo ◽  
Range Finding ◽  
Phase Ii Studies

Objective.To assess toreforant (selective histamine H4 receptor antagonist) in active rheumatoid arthritis (RA).Methods.In a phase IIa, double-blind, placebo-controlled test, 86 patients were randomized (2:1) to once-daily toreforant 100 mg or placebo for 12 weeks. In phase IIb, double-blind, placebo-controlled, dose-range–finding evaluations, 272 patients were randomized (1:1:1:1) to once-daily placebo or toreforant 3/10/30 mg. Primary efficacy endpoints for both studies were Week 12 changes in 28-joint Disease Activity Score–C-reactive protein (DAS28-CRP).Results.Phase IIa testing was terminated prematurely (patient fatality; secondary hemophagocytic lymphohistiocytosis). Posthoc analyses indicated toreforant 100 mg/day reduced RA signs/symptoms through Week 12. Phase IIb testing, however, showed no significant Week 12 improvement in DAS28-CRP with toreforant.Conclusion.Toreforant was not effective in phase IIb testing.

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