Before thiopurines treatment, CH (p = 0.007), LDL (p = 0.001), and ApoB (p = 0.0003) had higher levels in the leukopenia group compared to the non-leukopenia group, and there were no differences in the others between the two groups (Figures 5H–N), that is there was no difference in blood total TG levels between two groups, either before or after the treatment. The gene discussed is C4B; the disease is Decreased total leukocyte count.