TDM-based Infliximab Treatment for Active Perianal Fistulizing Crohn's Disease

Infliximab (CT-P13, RemsimaTM) is intravenously given as an induction therapy at a dose of 5 mg/kg at week 0, 2, and 6. From week 14 to 46 (at week 14, 22, 30, 38, and 46), infliximab dose can be increased to 10 mg/kg, targeting trough level (TL) of infliximab 10 mcg/mL or over (If TL is 10 mcg/mL or over under treatment with 5 mg/kg infliximab, 5 mg/kg of infliximab is continued. If TL is lower than 10 mcg/mL, infliximab dose is increased to 10 mg/kg). Once infliximab dose was increased to 10 mg/kg, the next doses are fixed to 10 mg/kg.

Infliximab (CT-P13, RemsimaTM) is intravenously administered at a dose of 5 mg/kg at week 0, 2, 6, 14, 22, 30, 38, and 46. Therapeutic dose monitoring (TDM, checking trough levels of infliximab) is performed at week 14, 22, 30, 38, and 46, but TDM results are not reflected in determining doses of infliximab.