Absolute numbers of lymphocytes and their subsets in the PB of limited-stage and advanced-stage cHL patients before primary treatment. Comparing healthy controls (n = 20) to limited-stage (n = 28) and advanced-stage (n = 20) cHL patients. (A) Absolute lymphocyte count (ALC) and absolute numbers of major lymphocyte populations (B cells, T cells, CD4+ T cells, CD8+ T cells, and CD4/CD8 ratio). (B) Absolute numbers of T helper cells (Th1 cells, Th2 cells, Th1/Th2 ratio, Th17 cells, and Tregs) and concentrations of CCL17/TARC in plasma. (C) Percentages of CD4+ T cells that are expressing functional markers (Ki67, CD69, PD-1, and CTLA-4) and absolute numbers of CD4+ TN and TEM cells. (D) Percentages of CD8+ T cells that are expressing functional markers (Ki67, CD69, PD-1, and CTLA-4) and absolute numbers of CD8+ TN and TEM cells. (E) Absolute numbers of NK cells, CD56dim NK cells, CD56bright NK cells, and percentages of NK cells that are expressing functional markers (CD69, HLA-DR, NKG2D, and DNAM-1). The CD4/CD8 ratio, Th1/Th2 ratio, and CCL17/TARC data are depicted as box and whiskers plots in the style of Tukey. All other data are depicted as violin plots with a thick line at the median and thin lines at the quartiles. Stars indicate the P-value of a Mann-Whitney test comparing the indicated groups. *P < 0.05; **P < 0.01; ***P < 0.001; ****P < 0.0001. ADV = advanced-stage; cHL = classical Hodgkin lymphoma; CTLA = cytotoxic T lymphocyte antigen; DNAM = DNAX accessory molecule; LIM = limited-stage; NK = natural killer; NKG2D = NK group 2 member D; PB = peripheral blood.