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Clinical Experience With Infliximab Therapy in 100 Patients With Crohn's Disease

Farrell, Richard J, MD1; Shah, Samir A, MD2; Lodhavia, Parag J, MD2; Alsahli, Mazen, MD1; Falchuk, Kenneth R, MD1; Michetti, Pierre, MD1; Peppercorn, Mark A, MD, FACG1

American Journal of Gastroenterology: December 2000 - Volume 95 - Issue 12 - p 3490–3497
doi: 10.1111/j.1572-0241.2000.03366.x
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OBJECTIVE: The aim of this study was to assess our clinical experience with infliximab, a monoclonal antitumor necrosis factor antibody, following its approval for treatment of refractory Crohn's disease (CD).

METHODS: We followed 100 consecutive patients with CD (53 women and 47 men; mean age, 41 yr) who received a total of 233 infliximab (5 mg/kg) infusions. Adverse events were noted and clinical response assessed every 2 wk for 6 months after each infusion using the Harvey Bradshaw Index (HBI) for active disease, the Perianal Disease Activity Index (PDAI) for fistulous disease, and steroid withdrawal rates for steroid-sparing efficacy.

RESULTS: Indications for therapy were active disease (n = 57), perianal fistulous disease (n = 33), and steroid dependency (n = 10). Significant infusion reactions occurred in 16 patients (6.9% of infusions) including anaphylactic shock in one patient. Fourteen patients experienced infectious adverse events, 13 of whom were on concurrent steroids. Sixty percent of patients with active disease experienced ≥50% HBI reduction at 2 wk; mean duration of response, 8.2 wk. Three of 26 first-time nonresponders with active disease (12%) responded to a second infusion. Sixty-nine percent of patients with fistulous disease experienced >50% reduction in their PDAI at 2 wk; mean duration of response, 10.9 wk. Four of 10 steroid-dependent patients (40%) discontinued steroid therapy, one of whom recommenced steroid therapy at 24 wk.

CONCLUSIONS: Our clinical response rates mirror the efficacy reported in the controlled trials for active and fistulous disease. Steroid-sparing efficacy was seen in 40% of steroid-dependent patients. Concurrent steroids did not reduce the risk of significant infusion reactions (6.9%), but did increase the risk of infections.

1Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA

2Brown University School of Medicine, Providence, Rhode Island, USA

Reprint requests and correspondence: Richard J Farrell, MD, Gastroenterology Division, Beth Israel Deaconess Medical Center, Harvard Medical School, Dana 501, 330 Brookline Avenue, Boston, MA 02215

Received April. 21, 2000; accepted July. 27, 2000

© The American College of Gastroenterology 2000. All Rights Reserved.
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