PZP and Hodgkins lymphoma: Some of the proteins in these biological regulatory subclasses of interest were identified in both groups of patients as being more abundant in either non-relapsing HL (AGT, C1QB, EFEMP, TTR, FBLN1, HRG, PZP, SERPINA1, SERPINC1, SERPINF2 and PON1) or relapsing HL (A1BG, C1S, FGB, FGG, FN1 and THBS1).