Table 4.
The pharmacokinetic parameters of panobinostat in FVB wild-type, PKO (Mdr1a/b−/−), BKO (Bcrp1−/−), and TKO (Mdr1a/b−/−Bcrp1−/−) mice after the administration of a single intravenous dose of 10 mg/kg Standard error of Kp is calculated via propagation of error.
| Parameter | Unit | WT | TKO | PKO | BKO | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Plasma | Brain | Spinal Cord  | 
Plasma | Brain | Spinal Cord | Plasma | Brain | Spinal Cord  | 
Plasma | Brain | Spinal Cord  | 
||
| Dose | mg/kg | 10 | 10 | 10 | 10 | ||||||||
| t1/2 | h | 13.6 | 21.9 | 18.1 | 13.5 | 12.5 | 8.8 | 10.4 | 11.7 | 9.1 | N.D.a | 10.4 | 11.3 | 
| CL | L/h per kg | 9 | — | — | 6.6 | — | — | 9.3 | — | — | 10.6 | — | — | 
| Vss | L/kg | 57.5 | — | — | 42.8 | — | — | 50.3 | — | — | 17.6 | — | — | 
| AUCinf | ng*h/mL | 1113 ± 87 | 1515 ± 45 | 848 ± 41 | 1519 ± 59 | 6562 ± 162 | 4765 ± 159 | 1073 ± 40 | 3770 ± 112 | 2286 ± 54 | 943 ± 44 | 892 ± 19 | 569 ± 20 | 
| AUCinf % extrapolated | 8.6 | 48.6 | 38.0 | 9.0 | 24.6 | 13.3 | 6.5 | 23.1 | 15.1 | 5.3 | 33.5 | 59.6 | |
| Kp | — | 1.36 ± 0.11 | 0.76 ± 0.07 | — | 4.32 ± 0.20 | 3.14 ± 0.16 | — | 3.51 ± 0.17 | 2.13 ± 0.09 | — | 0.95 ± 0.05 | 0.6 ± 0.04 | |
| Kp,uu | — | 0.32 | 0.21 | — | 1.02 | 0.87 | — | 0.83 | 0.59 | — | 0.22 | 0.17 | |
| DAfree | 1 | 1 | 3.17 | 4.12 | 2.58 | 2.80 | 0.69 | 0.79 | |||||
CL, clearance; N.D., not determined; t1/2, half-life.
aPlasma half-life of panobinostat in BKO mice was not determined because of the lack of concentration information to characterize the terminal phase.