“…This special issue of Molecular and Cellular Proteomics presents a wide range of primary research, reviews, and perspectives pertaining to clinical proteomics. The expanding scope of proteomics applications is reflected in the spectrum of disease foci represented, including neurodegenerative diseases ( 1 , 2 , 3 , 4 ), infectious disease ( 5 , 6 ), endocrinology ( 7 , 8 ), cardiovascular disease ( 9 ), inflammatory disease ( 10 ), kidney disease ( 11 ), and cancer ( 12 , 13 , 14 , 15 ), as well as in the burgeoning areas of health monitoring and exercise ( 16 , 17 ).…”