C4B and psychotic disorder: Of the 99 proteins within this dataset, Complement component C8 beta chain (C8B), Complement C4-B (C4B), Leucine-rich α-2 glycoprotein (LRG1), and Complement C5 (C5) were differentially expressed between those who transitioned and those who did not transition to psychosis while adjusting for age, sex, and study.