Active-Controlled Study with Atorvastatin (Study 301)
Pitavastatin was compared with Atorvastatin Calcium Tablets (referred to as atorvastatin) in a randomized, multicenter, double-blind, double-dummy, active-controlled, non-inferiority study of 817 adult patients with primary hyperlipidemia or mixed dyslipidemia. Patients entered a 6- to 8-week wash-out/dietary lead-in period and then were randomized to a 12-week treatment with either pitavastatin or atorvastatin (Table 5). Non-inferiority of pitavastatin to a given dose of atorvastatin was considered to be demonstrated if the lower bound of the 95% CI for the mean treatment difference was greater than -6% for the mean percent change in LDL-C.
Lipid results are shown in Table 5. For the percent change from baseline to endpoint in LDL-C, pitavastatin was non-inferior to atorvastatin for the two pairwise comparisons: pitavastatin 2 mg vs. atorvastatin 10 mg and pitavastatin 4 mg vs. atorvastatin 20 mg. Mean treatment differences (95% CI) were 0% (-3%, 3%) and 1% ( 2%, 4%), respectively.
Table 5 Lipid Response by Dose of Pitavastatin and Atorvastatin in Adult Patients with Primary Hyperlipidemia or Mixed Dyslipidemia in Study 301 (Mean % Change from Baseline at Week 12)| Treatment | N | LDL-C | Apo-B | TC | TG | HDL-C | non-HDL-C |
| Pitavastatin 2 mg daily | 315 | -38 | -30 | -28 | -14 | 4 | -35 |
| Pitavastatin 4 mg daily | 298 | -45 | -35 | -32 | -19 | 5 | -41 |
| Atorvastatin 10 mg daily | 102 | -38 | -29 | -28 | -18 | 3 | -35 |
| Atorvastatin 20 mg daily | 102 | -44 | -36 | -33 | -22 | 2 | -41 |
Active-Controlled Study with Simvastatin (Study 302)
Pitavastatin was compared with Simvastatin Tablets (referred to as simvastatin) in a randomized, multicenter, double-blind, double-dummy, active-controlled, non-inferiority study of 843 adult patients with primary hyperlipidemia or mixed dyslipidemia. Patients entered a 6 to 8-week wash-out/dietary lead-in period and then were randomized to a 12-week treatment with either pitavastatin or simvastatin (Table 6). Non-inferiority of pitavastatin to a given dose of simvastatin was considered to be demonstrated if the lower bound of the 95% CI for the mean treatment difference was greater than -6% for the mean percent change in LDL-C.
Lipid results are shown in Table 6. For the percent change from baseline to endpoint in LDL-C, pitavastatin was non-inferior to simvastatin for the two pairwise comparisons: pitavastatin 2 mg vs. simvastatin 20 mg and pitavastatin 4 mg vs. simvastatin 40 mg. Mean treatment differences (95% CI) were 4% (1%, 7%) and 1% (-2%, 4%), respectively.
Table 6 Lipid Response by Dose of Pitavastatin and Simvastatin in Adult Patients with Primary Hyperlipidemia or Mixed Dyslipidemia in Study 302 (Mean % Change from Baseline at Week 12)| Treatment | N | LDL-C | Apo-B | TC | TG | HDL-C | non-HDL-C |
| Pitavastatin 2 mg daily | 307 | -39 | -30 | -28 | -16 | 6 | -36 |
| Pitavastatin 4 mg daily | 319 | -44 | -35 | -32 | -17 | 6 | -41 |
| Simvastatin 20 mg daily | 107 | -35 | -27 | -25 | -16 | 6 | -32 |
| Simvastatin 40 mg daily | 110 | -43 | -34 | -31 | -16 | 7 | -39 |
Active-Controlled Study with Pravastatin in Geriatric Patients (Study 306)
Pitavastatin was compared with Pravastatin Sodium Tablets (referred to as pravastatin) in a randomized, multicenter, double-blind, double-dummy, parallel group, active-controlled non-inferiority study of 942 geriatric patients (≥ 65 years) with primary hyperlipidemia or mixed dyslipidemia. Patients entered a 6- to 8-week wash-out/dietary lead-in period, and then were randomized to a once daily dose of pitavastatin or pravastatin for 12 weeks (Table 7). Non-inferiority of pitavastatin to a given dose of pravastatin was assumed if the lower bound of the 95% CI for the treatment difference was greater than -6% for the mean percent change in LDL-C.
Lipid results are shown in Table 7. Pitavastatin significantly reduced LDL-C compared to pravastatin as demonstrated by the following pairwise dose comparisons: pitavastatin 1 mg vs. pravastatin 10 mg, pitavastatin 2 mg vs. pravastatin 20 mg and pitavastatin 4 mg vs. pravastatin 40 mg. Mean treatment differences (95% CI) were 9% (6%, 12%), 10% (7%, 13%) and 10% (7%, 13%), respectively.
Table 7 Lipid Response by Dose of Pitavastatin and Pravastatin in Geriatric Patients with Primary Hyperlipidemia or Mixed Dyslipidemia in Study 306 (Mean % Change from Baseline at Week 12)| Treatment | N | LDL-C | Apo-B | TC | TG | HDL-C | non-HDL-C |
| Pitavastatin 1 mg daily | 207 | -31 | -25 | -22 | -13 | 1 | -29 |
| Pitavastatin 2 mg daily | 224 | -39 | -31 | -27 | -15 | 2 | -36 |
| Pitavastatin 4 mg daily | 210 | -44 | -37 | -31 | -22 | 4 | -41 |
| Pravastatin 10 mg daily | 103 | -22 | -17 | -15 | -5 | 0 | -20 |
| Pravastatin 20 mg daily | 96 | -29 | -22 | -21 | -11 | -1 | -27 |
| Pravastatin 40 mg daily | 102 | -34 | -28 | -24 | -15 | 1 | -32 |
Active-Controlled Study with Simvastatin in Patients with ≥ 2 Risk Factors for Coronary Heart Disease (Study 304)
Pitavastatin was compared with Simvastatin Tablets (referred to as simvastatin) in a randomized, multicenter, double-blind, double-dummy, active-controlled, non-inferiority study of 351 adult patients with primary hyperlipidemia or mixed dyslipidemia with ≥ 2 risk factors for coronary heart disease. After a 6- to 8-week wash-out/dietary lead-in period, patients were randomized to a 12-week treatment with either pitavastatin or simvastatin (Table 8). Non-inferiority of pitavastatin to simvastatin was considered to be demonstrated if the lower bound of the 95% CI for the mean treatment difference was greater than -6% for the mean percent change in LDL-C.
Lipid results are shown in Table 8. Pitavastatin 4 mg was non-inferior to simvastatin 40 mg for percent change from baseline to endpoint in LDL-C. The mean treatment difference (95% CI) was 0% (-2%, 3%).
Table 8 Lipid Response by Dose of Pitavastatin and Simvastatin in Adult Patients with Primary Hyperlipidemia or Mixed Dyslipidemia with ≥ 2 Risk Factors for Coronary Heart Disease in Study 304 (Mean % Change from Baseline at Week 12)| Treatment | N | LDL-C | Apo-B | TC | TG | HDL-C | non-HDL-C |
| Pitavastatin 4 mg daily | 233 | -44 | -34 | -31 | -20 | 7 | -40 |
| Simvastatin 40 mg daily | 118 | -44 | -34 | -31 | -15 | 5 | -39 |
Active- Controlled Study with Atorvastatin in Patients with Type 2 Diabetes Mellitus (Study 305)
Pitavastatin was compared with Atorvastatin Calcium Tablets (referred to as atorvastatin) in a randomized, multicenter, double-blind, double-dummy, parallel group, active-controlled, non-inferiority study of 410 adult patients with type 2 diabetes mellitus and mixed dyslipidemia. Patients entered a 6 to 8 week wash-out/dietary lead-in period and were randomized to a once daily dose of pitavastatin or atorvastatin for 12 weeks. Non-inferiority of pitavastatin was considered to be demonstrated if the lower bound of the 95% CI for the mean treatment difference was greater than -6% for the mean percent change in LDL-C.
Lipid results are shown in Table 9. The treatment difference (95% CI) for LDL-C percent change from baseline was -2% (-6.2%, 1.5%). The two treatment groups were not statistically different on LDL-C. However, the lower limit of the CI was -6.2%, slightly exceeding the -6% non-inferiority limit The study failed to demonstrate that pitavastatin was not significantly different than atorvastatin in lowering LDL-C in patients with type 2 diabetes mellitus and mixed dyslipidemia.
Table 9 Lipid Response by Dose of Pitavastatin and Atorvastatin in Patients with Type 2 Diabetes Mellitus and Mixed Dyslipidemia in Study 305 (Mean % Change from Baseline at Week 12) | Treatment | N | LDL-C | Apo-B | TC | TG | HDL-C | non-HDL-C |
| Pitavastatin 4 mg daily | 274 | -41 | -32 | -28 | -20 | 7 | -36 |
| Atorvastatin 20 mg daily | 136 | -43 | -34 | -32 | -27 | 8 | -40 |
The treatment differences in efficacy in LDL-C change from baseline between pitavastatin and active controls (i.e., atorvastatin, simvastatin, or pravastatin) in the in the active-controlled studies described above are summarized in Figure 1.
Figure 1 Treatment Difference in Adjusted Mean Percent Change in LDL-C between Pitavastatin and the Comparator (Atorvastatin, Simvastatin, or Pravastatin)
Image (2bd9cad5 C46f 4e69 810e F8f7b8a79f4b 02)
NL=non-inferiority limit.Pediatric use information is approved for Kowa Co Ltd’s LIVALO (pitavastatin) tablets. However, due to Kowa Co Ltd’s marketing exclusivity rights, this drug product is not labeled with that information.