Intravenous CDP870, a PEGylated Fab' fragment of a humanized antitumour necrosis factor antibody, in patients with moderate-to-severe Crohn's disease: an exploratory study

Aliment Pharmacol Ther. 2004 Dec;20(11-12):1337-46. doi: 10.1111/j.1365-2036.2004.02285.x.


Background: CDP870 is a PEGylated Fab' fragment of a humanized monoclonal antibody that neutralizes tumour necrosis factor-alpha.

Aim: To evaluate the safety and efficacy of a single intravenous dose of CDP870 or placebo over a 12-week period in patients with moderate-to-severe Crohn's disease.

Methods: Ninety-two adult patients with Crohn's disease (Crohn's Disease Activity Index: 220-450 points) were randomized to receive CDP870 [1.25 (n = 2), 5 (n =26), 10 (n = 17) or 20 mg/kg (n = 23)] or placebo (n = 24). Crohn's Disease Activity Index scores were determined at weeks 0, 2, 4, 8 and 12. The primary end-point was the percentage of patients achieving clinical response [i.e. a decrease in Crohn's Disease Activity Index score > or = 100 points or remission (Crohn's Disease Activity Index score: < or =150 points)] at week 4 in the intent-to-treat population.

Results: The percentage of patients achieving the primary end-point was comparable across all treatment groups (56.0%, 60.0%, 58.8% and 47.8% for placebo, CDP870 5, 10 and 20 mg/kg, respectively). The remission rate at week 2 was 47.1% with CDP870 10 mg/kg vs. 16.0% for placebo (P = 0.041). All treatments were well-tolerated: adverse events, reported by 43 patients treated with CDP870 and 15 patients treated with placebo, were mainly mild-to-moderate in intensity. There were no infusion reactions.

Conclusions: A single intravenous dose of CDP870 was well-tolerated by patients with Crohn's disease. While no statistically significant difference in clinical response rates between CDP870 and placebo was observed, clinical benefit in terms of remission was demonstrated.

Publication types

  • Clinical Trial
  • Clinical Trial, Phase II
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Anti-Inflammatory Agents / administration & dosage*
  • Anti-Inflammatory Agents / adverse effects
  • Anti-Inflammatory Agents / pharmacokinetics
  • Antibodies, Monoclonal, Humanized
  • Certolizumab Pegol
  • Crohn Disease / drug therapy*
  • Humans
  • Immunoglobulin Fab Fragments
  • Infusions, Intravenous
  • Middle Aged
  • Polyethylene Glycols / administration & dosage*
  • Polyethylene Glycols / adverse effects
  • Polyethylene Glycols / pharmacokinetics
  • Treatment Outcome


  • Anti-Inflammatory Agents
  • Antibodies, Monoclonal, Humanized
  • Immunoglobulin Fab Fragments
  • Polyethylene Glycols
  • Certolizumab Pegol