Johnston, R.L., Lutzky, J., Chodhry, A., & Barkin, J.S. (2009). Cytotoxic T-lymphocyte-associated antigen 4 antibody-induced colitis and its management with infliximab. Digestive Diseases and Sciences, 54, 2538–2540.
To review the use of corticosteroids and infliximab in the treatment of patients with immune-mediated colitis secondary to anti-CTLA-4 antibody treatment
Five patients in a phase III trial for malignant melanoma treatment who developed diarrhea after receiving anti-CTLA-4 antibody treatment were evaluated. Four patients received tremelimumab, and one received ipilimumab. All five patients presented with acute diarrhea within a median of 35 days (range 10–53) after the last anti-CTLA-4 dose. Diarrhea was defined as loose or watery, nonbloody, and occurring four to eight times daily. Laboratory results were benign, and infection diarrhea was ruled out. Each patient underwent flexible sigmoidoscopy that revealed edema, erythema, ulcerations, and fibrinopurulent exudates. All five patients were treated with high-dose corticosteroids (prednisone 40–60 mg by mouth daily) for one week. Patients with continued, relapsed, or partial response beyond one week of treatment were treated with infliximab 5 mg/kg.
Prospective, observational trial
Case series report
Treatment with infliximab resulted in a resolution of symptoms within two to three days in all patients. Resolution was defined as a return to baseline bowel habits of one to two solid bowel movements per day. One patient had recurrence of symptoms within three weeks and was given a second treatment with infliximab with success. All patients had a four- to six-week follow-up to ensure resolution. None had a repeat sigmoidoscopy. The authors concluded that, to their knowledge, no untoward side effects to inflixamab have occurred, including infection. The discussion refers to this regimen as based on one article (Beck et al.). The discussion also raises concerning issues about the affect of infliximab on tumor response. The current authors further state that the drug could affect other immune suppressant properties, predisposing patients to serious infection and cancer progression.
Infliximab was effective in resolving immunotherapy-related diarrhea in this small group of patients.
Anti-CTLA-4 antibody treatment can cause immune-mediated colitis. Nurses must be knowledgeable about advances in the treatment of immune-related adverse reactions, such as colitis.