CD4 and episodic ataxia type 2: Most routine laboratory examinations show no difference between the two groups, with the exception of higher IL-6 levels (86.86 vs. 25.11 pg/mL, p= 0.017), higher IL-8 levels (18.32 vs. 12.48 pg/mL, p=0.024), lower CD4+ T lymphocytes (156 vs. 205 cells/μl, p=0.042), and lower CD8+ T (82 vs. 142 cells/μl, p=0.006) lymphocytes in CAPA group.