Abbreviations: ADAbs: anti-drug antibodies; RA: rheumatoid
arthritis; SPA: Spondyloarthritis; CD: Crohn’s disease; IFX: infliximab;
ADA: adalimumab
Figure 1a: IFX levels (µg/ml) in ADAbs+ Figure 1b: ADA levels (µg/ml) in
ADAbs+ versus ADAbs- patients in RA versus ADAbs- patients
in RA