FIG 2.

Posterior distributions of the BKPyV NAb titers before and after i.v. Ig injection according to the genotype and type of patients by Bayesian modeling. The density of Pr describes the continuous probability distribution of BKPyV NAb titers before and after i.v. Ig injection according to the genotype and the patient group (AMR or SIDS). The BKPyV NAb titer distribution values are depicted according to the BKPyV genotype (I [A], II [B], and IV [C]) before and after i.v. Ig injection for both SIDS (blue) and AMR (red) patients. The observed NAb titer increases were not relevantly different between the two groups of patients for genotype I (probability of a 0.5 log₁₀ increase [Pr], >0.75). However, the increase was greater in the AMR group than in the SIDS group for both genotype II (Pr = 0.92 versus 0.05, respectively) and genotype IV (Pr = 0.94 versus 0, respectively).