
Antibody drug conjugates (ADCs) link precisely targeted antibodies to cytotoxic small molecule drugs
with the goal of improving both the safety and efficacy of chemotherapeutics. Pivotal clinical trials of
trastuzumab‐DM1 for women with treatment-resistant HER2‐positive breast cancer and of SGN‐35 for
relapsed/refractory Hodgkin’s lymphoma represent the vanguard of several dozen ADCs currently in
various stages of clinical development. According to Fred Regnier, Purdue University's John H. Law
Distinguished Professor of Chemistry, Principal Investigator for the Purdue/IU Analytical Proteomics
Team, and founder of Perfinity Biosciences, “The emergence of new isolation methods paired with
stable isotope coding and mass spectrometry measurement of proteins, modified proteins, and their
tryptic digests provides an unprecedented level of specificity and quantification in examining their
structure, relative activity, and degradation in biological systems.”