Table 2.
Geometric mean ratios for Cmax and AUC and Hodges–Lehman estimate for tmax and their corresponding 90% confidence intervals for the comparisons between test and reference formulations in studies I (N=19) and II (N=22)
| PK variable | Treatment comparison | Geometric mean ratio or Hodges–Lehman estimate | 90% confidence interval |
|---|---|---|---|
| Study I | |||
| Cmax | A/C | 0.85 | 0.69, 1.04 |
| B/C | 0.78 | 0.64, 0.95 | |
| D/B | 0.81 | 0.56, 1.18 | |
| AUC0–∞ | A/C | 1.04 | 0.94, 1.14 |
| B/C | 0.93 | 0.85, 1.03 | |
| D/B | 0.95 | 0.84, 1.07 | |
| tmax | A/C | 0.1 | −0.05, 0.6 |
| B/C | 0.1 | −0.5, 0.5 | |
| D/B | −0.01 | −0.4, 0.5 | |
| Study II | |||
| Cmax | B/A | 0.19 | 0.16, 0.19 |
| C/A | 0.36 | 0.31, 0.42 | |
| C/B | 2.23 | 1.88, 2.66 | |
| AUC0–24h | B/A | 0.14 | 0.13, 0.16 |
| C/A | 0.32 | 0.29, 0.35 | |
| C/B | 2.20 | 2.02, 2.40 | |
| tmax | B/A | 0.2 | 0.0, 0.4 |
| C/A | 0.1 | −0.05, 0.2 | |
| C/B | −0.1 | −0.3, 0.1 | |
Notes: Study I treatments: (A) a single 200 mg dose of a tablet formulation with increased crystal size administered as 2×100 mg, (B) a single 200 mg dose of a tablet formulation with increased crystal size and excipients in the extra-granular phase administered as 2×100 mg, (C) a single 200 mg dose of the old formulation used in previous studies administered as 2×100 mg, and (D) a single 200 mg dose of a tablet formulation with increased crystal size and excipients in the extra-granular phase administered as one 200 mg tablet. Study II treatments: (A) a single 200 mg dose of a tablet formulation with increased crystal size and excipients in the extra-granular phase administered as 2×100 mg (same as treatment B in study I); (B) 25 mg of a liquid-filled hard gelatin capsule; (C) 50 mg of a liquid-filled hard gelatin capsule administered as 2×25 mg capsules.
Abbreviations: AUC, area under the curve; Cmax, maximum concentration; PK, pharmacokinetics; tmax, the median time to the maximum concentration.