Figure 4From: Antibodies toward infliximab are associated with low infliximab concentration at treatment initiation and poor infliximab maintenance in rheumatic diseasesMaintenance of treatment by trough infliximab concentration after treatment initiation. RA patients were separated according to (a) the median and (b) the first quartile of trough infliximab concentrations measured at week 14. SpA patients were separated according to the (a) median and (b) the first quartile of trough infliximab concentrations measured at week 14. RA: rheumatoid arthritis; SpA: spondyloarthritis.Back to article page