highly significantp < 0·0001
The a priori defined primary pharmacodynamic outcome of an increase in the frequency of Tregs as a percentage of CD4 + T-lymphocytes at D8 was dose-dependent (JT-J test, p < 0.0001) and highly significant for both treated arms (MW-U test, p < 0·0001; 2 MIU: mean [SD]: +6·2% [2·2]; 1 MIU: mean [SD]: +3·9% [1·2]) as compared to placebo (mean [SD]: −0·5% [1·3]) (see Table 3 , Fig. 2 a and b).