Detection of food-specific IgGs before and after IFX treatment

Thirty-one patients were all naïve to biological agent therapy and received anti-TNF mAb (5 mg/kg IFX; Cilag, Schaffhausen, Switzerland) treatment at weeks 0, 2, and 6. Infusions were delivered over a 2-h period. After the first session of IFX therapy, the patients were monitored weekly during follow-up, and serum samples were collected at weeks 0 and 10 after the first infusion and analyzed for food-specific IgGs according to the method described previously.