| Completed | 2 | 159 | Europe, RoW | Bimekizumab, Certolizumab Pegol, Placebo | UCB Celltech, PRA Health Sciences | Rheumatoid Arthritis | 04/17 | 04/17 | | |
| Completed | 2 | 43 | Europe | Certolizumab Pegol, Cimcia, Methoject, Lederlon, Leflunomid Gebro, Salazopyrin EN, Spiricort, Xyloneural | Rüdiger B. Müller, UCB Pharma | Rheumatoid Arthritis | 12/17 | 01/18 | | |