Primary Hyperlipidemia in Adults
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 |
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 |
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 |
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 |
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 washout/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 Adult 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)
2 (Pitavastatin Tablets 2)
NL=non-inferiority limit.
HeFH in Pediatric Patients
In a double-blind, placebo-controlled, 12-week trial, 82 pediatric patients (36 boys and 46 girls), 8 to 16 years of age with genetically confirmed HeFH, fasting low-density lipoprotein cholesterol (LDL-C) ≥ 190 mg/dL or LDL-C ≥ 160 mg/dL with an additional cardiovascular risk factor (male gender, a family history of premature CV disease, presence of low HDL (< 45 mg/dL) or high TG (> 150 mg/dL), presence of high lipoprotein (a) (> 75 nmol/L), presence of type 2 diabetes mellitus or presence of hypertension) were randomized to pitavastatin 1 mg, 2 mg, and 4 mg. Mean LDL-C at baseline was 235 mg/dL (range 160.5 mg/dL to 441 mg/dL). Approximately 39% of patients were Tanner Stage 1 at baseline.
Pitavastatin significantly reduced plasma LDL-C, non-HDL-C, TC, and Apo-B compared to placebo. The reductions in LDL-C, Apo-B, TC, and non-HDL-C were dose dependent. There was no statistically significant improvement in HDL-C or TG at any pitavastatin dose. See the lipid results in Table 10.
Table 10: Lipid Response in Pediatric Patients with HeFH (Mean % Change from Baseline at Week 12)
Treatment | N | LDL-C | Apo-B | TC | TG*# | HDL-C* | non-HDL-C |
Placebo | 19 | -1 | -3 | -1 | -3 | -1 | -1 |
Pitavastatin 1 mg daily | 20 | -21 | -20 | -16 | -14 | 7 | -21 |
Pitavastatin 2 mg daily | 24 | -30 | -25 | -25 | -15 | -3 | -29 |
Pitavastatin 4 mg daily | 19 | -38 | -28 | -30 | 5 | -2 | -36 |
*Difference from placebo not statistically significant #Median Percent Change from Baseline at Week 12 |