Infliximab Biosimilar Cross Reacts to Infliximab Antibodies


The Rheumatologist

August 11, 2016 • By

Cross Reactions

A recent study published online in March in the Annals of the Rheumatic Diseases investigated if the infliximab biosimilar (CT-P13, infliximab-dyyb), which is marketed in Europe as Inflectra and Remsima, can be safely and effectively substituted for infliximab (Remicade).1 Infliximab and its biosimilar are manufactured via the same process. Researchers set out to determine whether those patients with antibodies to infliximab would mount a similar response to the infliximab biosimilar (CT-P13). Two-hundred and fifty patients with rheumatoid arthritis (RA) andspondyloarthritis undergoing infliximab treatment who had never been exposed to CT-P13 were evaluated.

All patients treated with infliximab who had antibodies to infliximab cross reacted with CT-P13, either Inflectra or Remsima. The authors note that the epitopes raising the immune response to infliximab demonstrate the same degree of reactivity to the infliximab biosimilar. However, due to different glycosylation patterns or impurities, CT-P13 may possess its own unique epitopes.

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