TABLE 4.
Simulated and observed human PK parameters of delamanid after 100 mg oral dose and the prediction accuracyc
| Parameter | Predicted PK parameter of: |
Observed value | Fold error differencea of: |
||
|---|---|---|---|---|---|
| Css-MRTb | PBPK modeling | Css-MRTb | PBPK modeling | ||
| Cmax (ng/ml) | 46.6 | 203.4 | 198.4 | 0.23 | 1.02 |
| tmax (h) | 5 | 2 | 4 | 1.25 | 0.50 |
| AUC168h (ng·h/ml) | 2,826 | 4,381 | 3,150 | 0.90 | 1.39 |
| AUC∞ (ng·h/ml) | 3,004 | 4,385 | 3,168 | 0.95 | 1.38 |
| t1/2 (h) | 41.0 | 16.7 | 23.7 | 1.73 | 0.71 |
Predicted value versus observed value ratio was calculated.
In the Css-MRT approach, the human PK profile after a single oral administration of delamanid was simulated using the one-compartment model with first-order absorption kinetics.
The ka, lag time, kel, V, and F used values of 0.85 h−1, 0.69 h, 0.0177 h−1, 7.73 liter/kg, and 0.36, respectively.