Table 3.
Pharmacokinetic parameter | Summary statistics | Treatment (mg)a | |||
---|---|---|---|---|---|
AAFP 125 | AAFP 500 | AAFP 625 | OAA 1000 | ||
N | 33 | 34 | 34 | 33 | |
AUC0–∞ (ng·h/mL) | Mean | 112.12 | 438.02 | 473.31 | 453.18 |
SD | 65.94 | 249.43 | 247.19 | 219.07 | |
CV% | 58.81 | 56.94 | 52.23 | 48.34 | |
Geometric mean | 93.86 | 372.67 | 418.21 | 408.60 | |
AUC0–t (ng·h/mL) | Mean | 102.55 | 416.23 | 450.19 | 415.91 |
SD | 63.27 | 245.73 | 241.85 | 210.67 | |
CV% | 61.70 | 59.04 | 53.72 | 50.65 | |
Geometric mean | 84.75 | 350.02 | 394.76 | 372.51 | |
C max (ng/mL) | Mean | 28.22 | 84.16 | 100.76 | 83.40 |
SD | 16.46 | 44.05 | 63.75 | 57.40 | |
CV% | 58.34 | 52.34 | 63.27 | 68.83 | |
Geometric mean | 23.98 | 73.45 | 84.07 | 70.44 | |
t max (h) | Median | 1.5 | 1.5 | 1.5 | 2 |
Minimum | 0.5 | 0.5 | 0.5 | 0.5 | |
Maximum | 4 | 6 | 4 | 8 | |
t ½ (h) | Mean | 7.20 | 14.12 | 14.54 | 20.64 |
SD | 3.47 | 6.44 | 5.54 | 9.03 | |
CV% | 48.28 | 45.61 | 38.07 | 43.75 | |
Geometric mean | 6.27 | 12.59 | 13.63 | 18.77 | |
K e (/h) | Mean | 0.13 | 0.06 | 0.05 | 0.04 |
SD | 0.09 | 0.05 | 0.02 | 0.02 | |
CV% | 65.70 | 71.26 | 36.10 | 46.69 | |
Geometric mean | 0.11 | 0.06 | 0.05 | 0.04 |
AAFP abiraterone acetate fine particle, AUC 0–∞ area under the plasma concentration–time curve from time zero to infinity, AUC 0–t area under the plasma concentration–time curve from time zero to the time of the last quantifiable concentration, C max maximum plasma concentration, CV% coefficient of variation expressed as percent, K e apparent elimination rate constant, N number of subjects included in the pharmacokinetic population for each treatment, OAA originator abiraterone acetate, SD standard deviation, t ½ elimination half-life, t max time to maximum plasma concentration
aAAFP 125 mg (1 × 125 mg), 500 mg (4 × 125 mg), 625 mg (5 × 125 mg), and OAA 1000 mg (4 × 250 mg) under fasted conditions