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Efficacy and Safety of Certolizumab Pegol Plus Methotrexate in Active Rheumatoid Arthritis: The RAPID 2 Study
  1. Josef S Smolen (josef.smolen{at}wienkav.at)
  1. Medica University of Vienna, Austria
    1. Robert BM Landewé (rlan{at}sint.azm.nl)
    1. University of Maastricht, Netherlands
      1. Philip J Mease (pmease{at}nwlink.com)
      1. Rheumatology, United States
        1. Jan Brzezicki (janisb{at}poczta.onet.pl)
        1. Oddzial Reumatologii ul, Wojewodzki Szpital Zespolony, Elblag, Poland
          1. David Mason (percept.bio{at}comcast.net)
          1. Research and Development, UCB Inc, Atlanta, Georgia, United States
            1. Kristel Luijtens (kristel.luijtens{at}ucb-group.com)
            1. UCB Inc, Brussels, Belgium
              1. Ronald F van Vollenhoven (ronald.van.vollenhoven{at}ki.se)
              1. Karolinska University Hospital, Sweden
                1. Arthur Kavanaugh (akavanaugh{at}ucsd.edu)
                1. Div of Rheumatology, United States
                  1. Michael H. Schiff (lmschiff{at}aol.com)
                  1. Denver Arthritis Clinic, United States
                    1. Gerd R Burmester (gerd.burmester{at}charite.de)
                    1. Charite University Hospital, Germany
                      1. Vibeke Strand (vstrand{at}aol.com)
                      1. Stanford, United States
                        1. Jiri Vencovsky (venc{at}revma.cz)
                        1. Institute of Rheumatology, Czech Republic
                          1. Désirée MFM van der Heijde (d.vanderheijde{at}kpnplanet.nl)
                          1. Leiden University Medical Center, Netherlands

                            Abstract

                            Objective: Certolizumab pegol is a PEGylated tumor necrosis factor (TNF) inhibitor. The objective of this study was to evaluate the efficacy and safety of certolizumab pegol versus placebo, plus methotrexate (MTX), in patients with active rheumatoid arthritis (RA).

                            Methods: This was an international, multicenter, phase 3, randomized, double-blind, placebo-controlled study in active adult-onset RA. Patients (n=619) were randomized 2:2:1 to subcutaneous certolizumab pegol (liquid formulation) 400 mg at Weeks 0, 2, and 4 followed by 200 mg or 400 mg plus MTX, or placebo plus MTX, every 2 weeks for 24 weeks. The primary endpoint was ACR20 response at Week 24. Secondary endpoints included ACR50 and ACR70 responses, change from baseline in modified Total Sharp Score (mTSS), ACR core set variables, and physical function.

                            Results: Significantly more patients in the certolizumab pegol 200- and 400-mg groups achieved an ACR20 response versus placebo (P ≤ 0.001); rates were 57.3%, 57.6%, and 8.7%, respectively. Certolizumab pegol 200 and 400 mg also significantly inhibited radiographic progression; mean changes from baseline in mTSS at Week 24 were 0.2 and –0.4, respectively, versus 1.2 for placebo (rank analysis P ≤ 0.01). Certolizumab pegol-treated patients reported rapid and significant improvements in physical function versus placebo (P ≤ 0.001). Most adverse events were mild or moderate, with low incidence of withdrawals due to adverse events. Five patients developed tuberculosis.

                            Conclusion: Certolizumab pegol plus MTX was more efficacious than placebo plus MTX, rapidly and significantly improving signs and symptoms of RA and physical function and inhibiting radiographic progression.

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