Karthik Pisupati, Yuwei Tian, Solomon Okbazghi, Alexander Benet, Rose Ackermann, Michael Ford, Sergei Saveliev, Christopher M Hosfield, Marjeta Urh, Eric Carlson, Christopher Becker, Thomas J Tolbert, Steven P Schwendeman, Brandon T Ruotolo, Anna Schwendeman
In April 2016, the Food and Drug Administration approved the first biosimilar monoclonal antibody (mAb), Inflectra/Remsima (Celltrion), based off the original product Remicade (infliximab, Janssen). Biosimilars promise significant cost savings for patients, but the unavoidable differences between innovator and copycat biologics raise questions regarding product interchangeability. In this study, Remicade and Remsima were examined by native mass spectrometry, ion mobility, and quantitative peptide mapping. The levels of oxidation, deamidation, and mutation of individual amino acids were remarkably similar...
May 2, 2017: Analytical Chemistry