FKBP2 and Decreased total leukocyte count: FKBP2 c.-2110GG genotype (OR = 3.87, 95% CI = 1.26–11.91, p = 0.018), therapy group (TAC+MPS; OR = 3.66, 95% CI = 1.19–11.28, p = 0.024) and CMV (OR = 9.68, 95% CI = 3.08–30.38, p = 0.0001) were associated with leukopenia (p < 0.05).