Slowing of the Progression of Atherosclerosis
In the Measuring Effects on Intima Media Thickness: an Evaluation Of Rosuvastatin 40 mg (METEOR)study, the effect of therapy with rosuvastatin calcium on carotid atherosclerosis was assessed by B-mode ultrasonography in patients with elevated LDL-C, at low risk (Framingham risk <10% over ten years) for symptomatic coronary artery disease and with subclinical atherosclerosis as evidenced by carotid intimal-medial thickness (cIMT). In this double-blind, placebo-controlled clinical study 984 adult patients were randomized (of whom 876 were analyzed) in a 5:2 ratio to rosuvastatin calcium 40 mg or placebo once daily. Ultrasonograms of the carotid walls were used to determine the annualized rate of change per patient from baseline to two years in mean maximum cIMT of 12 measured segments. The estimated difference in the rate of change in the maximum cIMT analyzed over all 12 carotid artery sites between patients treated with rosuvastatin calcium and placebo-treated patients was -0.0145 mm/year (95% CI –0.0196, – 0.0093; p<0.0001).
The annualized rate of change from baseline for the placebo group was +0.0131 mm/year (p<0.0001). The annualized rate of change from baseline for the group treated with rosuvastatin calcium was -0.0014 mm/year (p=0.32).
At an individual patient level in the group treated with rosuvastatin calcium, 52.1% of patients demonstrated an absence of disease progression (defined as a negative annualized rate of change), compared to 37.7% of patients in the placebo group.
HeFH in Adults
In a study of adult patients with HeFH (baseline mean LDL of 291 mg/dL), patients were randomized to rosuvastatin calcium 20 mg or atorvastatin 20 mg. The dose was increased at 6-week intervals. Significant LDL-C reductions from baseline were seen at each dose in both treatment groups (see Table 12).
Table 12: LDL-C Percent Change from Baseline
Rosuvastatin calcium (n=435)
LS Mean 1
(95% CI)
Atorvastatin (n=187)
LS Mean 1 (95% CI)
Week 6
20 mg
-47% (-49%, -46%)
-38% (-40%, -36%)
Week 12
40 mg
-55% (-57%, -54%)
-47% (-49%, -45%)
Week 18
80 mg
NA
-52% (-54%, -50%)
1LS Means are least square means adjusted for baseline LDL-C
HeFH in Pediatric Patients
In a double-blind, randomized, multicenter, placebo-controlled, 12-week study, 176 (97 male and 79 female) pediatric patients with HeFH were randomized to rosuvastatin 5 mg, 10 mg or 20 mg or placebo daily. Patients ranged in age from 10 to 17 years (median age of 14 years) with approximately 30% of the patients 10 to 13 years and approximately 17%, 18%, 40%, and 25% at Tanner stages II, III, IV, and V, respectively. Females were at least 1-year postmenarche. Mean LDL-C at baseline was 233 mg/dL (range of 129 to 399). The 12-week double-blind phase was followed by a 40-week open-label dose-titration phase, where all patients (n=173) received 5 mg, 10 mg or 20 mg rosuvastatin daily.
Rosuvastatin significantly reduced LDL-C (primary end point), total cholesterol and ApoB levels at each dose compared to placebo. Results are shown in Table 13 below.
Table 13: Lipid-Modifying Effects of Rosuvastatin calcium in Pediatric Patients 10 to 17 years of Age with HeFH (Least-Squares Mean Percent Change from Baseline To Week 12)
Dose (mg)
N
LDL-C
HDL-C
Total-C
TG 1
ApoB
Placebo
46
-1%
+7%
0%
-7%
-2%
5
42
-38%
+4% 2
-30%
-13% 2
-32%
10
44
-45%
+11% 2
-34%
-15% 2
-38%
20
44
-50%
+9% 2
-39%
16% 2
-41%
1Median percent change
2 Difference from placebo not statistically significant
Rosuvastatin was also studied in a two-year open-label, uncontrolled, titration-to-goal trial that included 175 pediatric patients with HeFH who were 8 to 17 years old (79 males and 96 females). All patients had a documented genetic defect in the LDL receptor or in ApoB. Approximately 89% were White, 7% were Asian, 1% were Black or African American, and fewer than 1% were Hispanic or Latino ethnicity. Mean LDL-C at baseline was 236 mg/dL. Fifty-eight (33%) patients were prepubertal at baseline. The starting rosuvastatin dosage for all pediatric patients was 5 mg once daily. Pediatric patients aged 8 to less than 10 years (n=41 at baseline) could titrate to a maximum dosage of 10 mg once daily, and pediatric patients aged 10 to 17 years could titrate to a maximum dosage of 20 mg once daily.
The reductions in LDL-C from baseline were generally consistent across age groups within the trial as well as with previous experience in both adult and pediatric controlled trials.
HoFH in Adult and Pediatric Patients
In an open-label, forced-titration study, HoFH patients (n=40, 8 to 63 years) were evaluated for their response to rosuvastatin calcium 20 to 40 mg titrated at a 6-week interval. In the overall population, the mean LDL-C reduction from baseline was 22%. About one-third of the patients benefited from increasing their dose from 20 mg to 40 mg with further LDL-C lowering of greater than 6%. In the 27 patients with at least a 15% reduction in LDL-C, the mean LDL-C reduction was 30% (median 28% reduction). Among 13 patients with an LDL-C reduction of <15%, 3 had no change or an increase in LDL-C. Reductions in LDL-C of 15% or greater were observed in 3 of 5 patients with known receptor negative status.
HoFH in Pediatric Patients
Rosuvastatin calcium was studied in a randomized, double-blind, placebo-controlled, multicenter, crossover study in 14 pediatric patients with HoFH. The study included a 4-week dietary lead-in phase during which patients received rosuvastatin calcium 10 mg daily, a cross-over phase that included two 6-week treatment periods with either rosuvastatin calcium 20 mg or placebo in random order, followed by a 12-week open-label phase during which all patients received rosuvastatin calcium 20 mg. Patients ranged in age from 7 to 15 years of age (median 11 years), 50% were male, 71% were White, 21% were Asian, 7% were Black or African American, and no patients were of Hispanic or Latino ethnicity. Fifty percent were on apheresis therapy and 57% were taking ezetimibe. Patients who entered the study on apheresis therapy or ezetimibe continued the treatment throughout the entire study. Mean LDL-C at baseline was 416 mg/dL (range 152 to 716 mg/dL). A total of 13 patients completed both treatment periods of the randomized cross-over phase; one patient withdrew consent due to inability to have blood drawn during the cross-over phase.
Rosuvastatin calcium 20 mg significantly reduced LDL-C, total cholesterol, ApoB, and non-HDL-C compared to placebo (see Table 14).
Table 14: Lipid-Modifying Effects of Rosuvastatin calcium in Pediatric Patients 7 to 15 years of Age with HoFH After 6 Weeks
Placebo (N=13)
Rosuvastatin calcium
20 mg (N=13)
Percent difference (95% CI)
LDL-C (mg/dL)
481
396
-22.3% (-33.5, -9.1) 1
Total-C (mg/dL)
539
448
-20.1% (-29.7, -9.1) 2
Non-HDL-C (mg/dL)
505
412
-22.9% (-33.7, -10.3) 2
ApoB (mg/dL)
268
235
-17.1% (-29.2, -2.9) 3
% Difference estimates are based on transformations of the estimated mean difference in log LDL measurements between rosuvastatin calcium and placebo using a mixed model adjusted for study period 1p=0.005, 2p=0.003, 3p=0.024
Primary Dysbetalipoproteinemia in Adults
In a randomized, multicenter, double-blind cross-over study, 32 adult patients (27 with є2/є2 and 4 with apo E mutation [Arg145Cys] with primary dysbetalipoproteinemia entered a 6-week dietary lead-in period on the NCEP Therapeutic Lifestyle Change (TLC) diet. Following dietary lead-in, patients were randomized to a sequence of treatments for 6 weeks each: rosuvastatin 10 mg followed by rosuvastatin 20 mg or rosuvastatin 20 mg followed by rosuvastatin 10 mg. Rosuvastatin calcium reduced non-HDL-C (primary end point) and circulating remnant lipoprotein levels. Results are shown in the table below.
Table 15: Lipid-Modifying Effects of Rosuvastatin calcium 10 mg and 20 mg in Adult Patients with Primary Dysbetalipoproteinemia (Type III hyperlipoproteinemia) After Six Weeks by Median Percent Change (95% CI) from Baseline (N=32)
Median at Baseline (mg/dL)
Median percent change from baseline (95% CI) rosuvastatin calcium 10 mg
Median percent change from baseline (95% CI) rosuvastatin calcium 20 mg
Total-C
342.5
-43.3
(-46.9, -37.5)
-47.6
(-51.6, -42.8)
Triglycerides
503.5
-40.1
(-44.9, -33.6)
-43.0
(-52.5, -33.1)
Non-HDL-C
294.5
-48.2
(-56.7, -45.6)
-56.4
(-61.4, -48.5)
VLDL-C + IDL-C
209.5
-46.8
(-53.7, -39.4)
-56.2
(-67.7, -43.7)
LDL-C
112.5
-54.4
(-59.1, -47.3)
-57.3
(-59.4, -52.1)
HDL-C
35.5
10.2
(1.9, 12.3)
11.2
(8.3, 20.5)
RLP-C
82.0
-56.4
(-67.1, -49.0)
-64.9
(-74.0, -56.6)
Apo-E
16.0
-42.9
(-46.3, -33.3)
-42.5
(-47.1, -35.6)
Hypertriglyceridemia in Adults
In a double-blind, placebo-controlled study in adult patients with baseline TG levels from 273 to 817 mg/dL, rosuvastatin calcium given as a single daily dose (5 to 40 mg) over 6 weeks significantly reduced serum TG levels (see Table 16).
Table 16: Lipid-Modifying Effect of Rosuvastatin calcium in Adult Patients with Primary Hypertriglyceridemia After Six Weeks by Median (Min, Max) Percent Change from Baseline to Week 6
Dose
Placebo (n=26)
Rosuvastatin calcium
5 mg
(n=25)
Rosuvastatin calcium
10 mg
(n=23)
Rosuvastatin calcium
20 mg
(n=27)
Rosuvastatin calcium
40 mg
(n=25)
Triglycerides
1 (-40, 72)
-21 (-58, 38)
-37 (-65, 5)
-37 (-72, 11)
-43 (-80, -7)
Non-HDL-C
2 (-13, 19)
-29 (-43, -8)
-49 (-59, -20)
-43 (-74, 12)
-51 (-62, -6)
Total-C
1 (-13, 17)
-24 (-40, -4)
-40 (-51, -14)
-34 (-61, -11)
-40 (-51, -4)
LDL-C
5 (-30, 52)
-28 (-71, 2)
-45 (-59, 7)
-31 (-66, 34)
-43 (-61, -3)
HDL-C
-3 (-25, 18)
3 (-38, 33)
8 (-8, 24)
22 (-5, 50)
17 (-14, 63)