Effects of adalimumab therapy on incidence of hospitalization and surgery in Crohn's disease: results from the CHARM study

Gastroenterology. 2008 Nov;135(5):1493-9. doi: 10.1053/j.gastro.2008.07.069. Epub 2008 Aug 3.


Background & aims: We determined the effects of adalimumab maintenance treatment on the risks of hospitalization and surgery in Crohn's disease (CD).

Methods: A total of 778 patients with CD were randomized to placebo, adalimumab 40 mg every other week or adalimumab 40 mg weekly, all after an 80-mg/40-mg adalimumab induction regimen. All-cause and CD-related hospitalizations and major CD-related surgeries were compared between the placebo and adalimumab groups (every other week, weekly, and both combined) using Kaplan-Meier analysis and Cox proportional hazard models.

Results: Both 3- and 12-month hospitalization risks were significantly lower for patients who received adalimumab. Hazard ratios for all-cause hospitalization were 0.45, 0.36, and 0.40 for the adalimumab every other week, weekly, and combined groups, respectively (all P < .01 vs placebo). Hazard ratios for CD-related hospitalization were 0.50, 0.34, and 0.42, respectively (all P < .05). Cox model estimates demonstrated adalimumab every other week and weekly maintenance therapies were associated with 52% and 60% relative reductions in 12-month, all-cause hospitalization risk, and 48% and 64% reductions in 12-month risk of CD-related hospitalization. The combined adalimumab group was associated with 56% reductions in both all-cause and CD-related hospitalization risks. Fewer CD-related surgeries occurred in the adalimumab every other week, weekly, and combined groups compared with placebo (0.4, 0.8, and 0.6 vs 3.8 per 100 patients; all P < .05).

Conclusions: Patients with moderate-to-severe CD treated with adalimumab had lower 1-year risks of hospitalization and surgery than placebo patients.

Publication types

  • Clinical Trial, Phase III
  • Comparative Study
  • Multicenter Study
  • Randomized Controlled Trial

MeSH terms

  • Adalimumab
  • Adolescent
  • Adult
  • Aged
  • Anti-Inflammatory Agents / administration & dosage*
  • Antibodies, Monoclonal / administration & dosage*
  • Antibodies, Monoclonal, Humanized
  • Confidence Intervals
  • Crohn Disease / drug therapy*
  • Crohn Disease / surgery
  • Digestive System Surgical Procedures / statistics & numerical data*
  • Dose-Response Relationship, Drug
  • Double-Blind Method
  • Drug Administration Schedule
  • Female
  • Follow-Up Studies
  • Hospitalization / statistics & numerical data*
  • Humans
  • Male
  • Middle Aged
  • Proportional Hazards Models
  • Risk Factors
  • Time Factors
  • Treatment Outcome
  • Tumor Necrosis Factor-alpha / antagonists & inhibitors
  • Young Adult


  • Anti-Inflammatory Agents
  • Antibodies, Monoclonal
  • Antibodies, Monoclonal, Humanized
  • Tumor Necrosis Factor-alpha
  • Adalimumab