Primary Hyperlipidemia in Adults
Ezetimibe reduces total-C, LDL-C, Apo B, and non-HDL-C in patients with hyperlipidemia. Maximal to near maximal response is generally achieved within 2 weeks and maintained during chronic therapy.
Monotherapy
In two multicenter, double-blind, placebo-controlled, 12-week trials in 1719 patients (age range 18 to 86 years, 52% females; 91% White, 5% Black or African American, 1% Asian, 3% other races mostly identified as Hispanic or Latino ethnicity) with primary hyperlipidemia, ezetimibe significantly lowered total-C, LDL-C, Apo B, and non-HDL-C compared to placebo (see Table 7). Reduction in LDL-C was consistent across age, sex, and baseline LDL-C.
TABLE 6: Response to Ezetimibe in Patients with Primary Hyperlipidemia (Mean* % Change from Untreated Baseline†) †Baseline - on no lipid-lowering drug. ‡Ezetimibe significantly reduced total-C, LDL-C, Apo B, and non-HDL-C compared to placebo.
|
| Treatment Group
| N
| Total-C
| LDL-C
| Apo B
| Non-HDL-C
|
Trial 1‡
| Placebo
| 205
| +1
| +1
| -1
| +1
|
Ezetimibe
| 622
| -12
| -18
| -15
| -16
|
Trial 2‡
| Placebo
| 226
| +1
| +1
| -1
| +2
|
Ezetimibe
| 666
| -12
| -18
| -16
| -16
|
Pooled Data‡ (Trials 1 & 2)
| Placebo
| 431
| 0
| +1
| -2
| +1
|
Ezetimibe
| 1288
| -13
| -18
| -16
| -16
|
Combination with Statins: Ezetimibe Added to On-going Statin Therapy
In a multicenter, double-blind, placebo-controlled, 8-week trial, 769 patients (age range 22 to 85 years, 42% females; 90% White, 6% Black or African American, 1% Asian, 3% other races; and 2% identified as Hispanic or Latino ethnicity) with primary hyperlipidemia, known coronary heart disease or multiple cardiovascular risk factors who were already receiving statin monotherapy but who had not met their NCEP ATP II target LDL-C goal, were randomized to receive either ezetimibe or placebo in addition to their on-going statin.
Ezetimibe, added to on-going statin therapy, significantly lowered total-C, LDL-C, Apo B, and non-HDL-C compared with a statin administered alone (see Table 8). LDL-C reductions induced by ezetimibe were generally consistent across all statins.
TABLE 7: Response to Addition of Ezetimibe to On-Going Statin Therapy* in Patients with Hyperlipidemia (Mean % Change from Treated Baseline‡)* Patients receiving each statin: 40% atorvastatin, 31% simvastatin, 29% others (pravastatin, fluvastatin, cerivastatin, lovastatin). ‡Baseline - on a statin alone. §Ezetimibe + statin significantly reduced total-C, LDL-C, Apo B, and non-HDL-C compared to statin alone.
|
Treatment (Daily Dose)
| N
| Total-C
| LDL-C
| Apo B
| Non-HDL-C
|
On-going Statin + Placebo§
| 390
| -2
| -4
| -3
| -3
|
On-going Statin + Ezetimibe§
| 379
| -17
| -25
| -19
| -23
|
Combination with Statins: Ezetimibe Initiated Concurrently with a Statin
In four multicenter, double-blind, placebo-controlled, 12-week trials, in 2,382 patients (age range 18 to 87 years, 57% female; 88% White, 5% Black or African American, 2% Asian, 5% other races mostly identified as Hispanic or Latino) with hyperlipidemia, ezetimibe or placebo was administered alone or with various doses of atorvastatin, simvastatin, pravastatin, or lovastatin.
When all patients receiving ezetimibe with a statin were compared to all those receiving the corresponding statin alone, ezetimibe significantly lowered total-C, LDL-C, Apo B, and non-HDL-C compared to the statin administered alone. LDL-C reductions induced by ezetimibe were generally consistent across all statins. (See footnote ‡, Tables 9 to 12.)
TABLE 8: Response to Ezetimibe and Atorvastatin Initiated Concurrently in Patients with Primary Hyperlipidemia (Mean % Change from Untreated Baseline†) †Baseline - on no lipid-lowering drug. ‡Ezetimibe + all doses of atorvastatin pooled (10 to 80 mg) significantly reduced total-C, LDL-C, Apo B, and non-HDL-C compared to all doses of atorvastatin pooled (10 to 80 mg).
|
Treatment (Daily Dose)
| N
| Total-C
| LDL-C
| Apo B
| Non-HDL-C
|
Placebo
| 60
| +4
| +4
| +3
| +4
|
Ezetimibe
| 65
| -14
| -20
| -15
| -18
|
Atorvastatin 10 mg
| 60
| -26
| -37
| -28
| -34
|
Ezetimibe + Atorvastatin 10 mg
| 65
| -38
| -53
| -43
| -49
|
Atorvastatin 20 mg
| 60
| -30
| -42
| -34
| -39
|
Ezetimibe + Atorvastatin 20 mg
| 62
| -39
| -54
| -44
| -50
|
Atorvastatin 40 mg
| 66
| -32
| -45
| -37
| -41
|
Ezetimibe + Atorvastatin 40 mg
| 65
| -42
| -56
| -45
| -52
|
Atorvastatin 80 mg
| 62
| -40
| -54
| -46
| -51
|
Ezetimibe + Atorvastatin 80 mg
| 63
| -46
| -61
| -50
| -58
|
Pooled data (All Atorvastatin Doses) ‡
| 248
| -32
| -44
| -36
| -41
|
Pooled data (All Ezetimibe + Atorvastatin Doses)‡
| 255
| -41
| -56
| -45
| -52
|
TABLE 9: Response to Ezetimibe and Simvastatin Initiated Concurrently in Patients with Primary Hyperlipidemia (Mean % Change from Untreated Baseline†) Treatment (Daily Dose)
| N
| Total-C
| LDL-C
| Apo B
| Non-HDL-C
|
|---|
†Baseline - on no lipid-lowering drug. ‡Ezetimibe + all doses of simvastatin pooled (10 to 80 mg) significantly reduced total-C, LDL-C, Apo B, and non-HDL-C compared to all doses of simvastatin pooled (10 to 80 mg).
|
Placebo
| 70
| -1
| -1
| 0
| -1
|
Ezetimibe
| 61
| -13
| -19
| -14
| -17
|
Simvastatin 10 mg
| 70
| -18
| -27
| -21
| -25
|
Ezetimibe + Simvastatin 10 mg
| 67
| -32
| -46
| -35
| -42
|
Simvastatin 20 mg
| 61
| -26
| -36
| -29
| -33
|
Ezetimibe + Simvastatin 20 mg
| 69
| -33
| -46
| -36
| -42
|
Simvastatin 40 mg
| 65
| -27
| -38
| -32
| -35
|
Ezetimibe + Simvastatin 40 mg
| 73
| -40
| -56
| -45
| -51
|
Simvastatin 80 mg
| 67
| -32
| -45
| -37
| -41
|
Ezetimibe + Simvastatin 80 mg
| 65
| -41
| -58
| -47
| -53
|
Pooled data (All Simvastatin Doses)‡
| 263
| -26
| -36
| -30
| -34
|
Pooled data (All Ezetimibe + Simvastatin Doses)‡
| 274
| -37
| -51
| -41
| -47
|
TABLE 10: Response to Ezetimibe and Pravastatin Initiated Concurrently in Patients with Primary Hyperlipidemia (Mean % Change from Untreated Baseline†) Treatment (Daily Dose)
| N
| Total-C
| LDL-C
| Apo B
| Non-HDL-C
|
|---|
†Baseline - on no lipid-lowering drug. ‡Ezetimibe + all doses of pravastatin pooled (10 to 40 mg) significantly reduced total-C, LDL-C, Apo B, and non-HDL-C compared to all doses of pravastatin pooled (10 to 40 mg).
|
Placebo
| 65
| 0
| -1
| -2
| 0
|
Ezetimibe
| 64
| -13
| -20
| -15
| -17
|
Pravastatin 10 mg
| 66
| -15
| -21
| -16
| -20
|
Ezetimibe + Pravastatin 10 mg
| 71
| -24
| -34
| -27
| -32
|
Pravastatin 20 mg
| 69
| -15
| -23
| -18
| -20
|
Ezetimibe + Pravastatin 20 mg
| 66
| -27
| -40
| -31
| -36
|
Pravastatin 40 mg
| 70
| -22
| -31
| -26
| -28
|
Ezetimibe + Pravastatin 40 mg
| 67
| -30
| -42
| -32
| -39
|
Pooled data (All Pravastatin Doses) ‡
| 205
| -17
| -25
| -20
| -23
|
Pooled data (All Ezetimibe + Pravastatin Doses) ‡
| 204
| -27
| -39
| -30
| -36
|
TABLE 11: Response to Ezetimibe and Lovastatin Initiated Concurrently in Patients with Primary Hyperlipidemia (Mean % Change from Untreated Baseline†) Treatment (Daily Dose)
| N
| Total-C
| LDL-C
| Apo B
| Non-HDL-C
|
|---|
†Baseline - on no lipid-lowering drug. ‡ Ezetimibe + all doses of lovastatin pooled (10 to 40 mg) significantly reduced total-C, LDL-C, Apo B, and non-HDL-C compared to all doses of lovastatin pooled (10 to 40 mg).
|
Placebo
| 64
| +1
| 0
| +1
| +1
|
Ezetimibe
| 72
| -13
| -19
| -14
| -16
|
Lovastatin 10 mg
| 73
| -15
| -20
| -17
| -19
|
Ezetimibe + Lovastatin 10 mg
| 65
| -24
| -34
| -27
| -31
|
Lovastatin 20 mg
| 74
| -19
| -26
| -21
| -24
|
Ezetimibe + Lovastatin 20 mg
| 62
| -29
| -41
| -34
| -39
|
Lovastatin 40 mg
| 73
| -21
| -30
| -25
| -27
|
Ezetimibe + Lovastatin 40 mg
| 65
| -33
| -46
| -38
| -43
|
Pooled data (All Lovastatin Doses) ‡
| 220
| -18
| -25
| -21
| -23
|
Pooled data (All Ezetimibe + Lovastatin Doses) ‡
| 192
| -29
| -40
| -33
| -38
|
Combination with Fenofibrate
In a multicenter, double-blind, placebo-controlled, clinical trial in patients with mixed hyperlipidemia, 625 patients (age range 20 to 76 years, 44% female; 79% White, 1% Black or African American, 20% other races; and 11% identified as Hispanic or Latino ethnicity) were treated for up to 12 weeks and 576 for up to an additional 48 weeks. Patients were randomized to receive placebo, ezetimibe alone, 160 mg fenofibrate alone, or ezetimibe and 160 mg fenofibrate in the 12-week trial. After completing the 12-week trial, eligible patients were assigned to ezetimibe coadministered with fenofibrate or fenofibrate monotherapy for an additional 48 weeks.
Ezetimibe coadministered with fenofibrate significantly lowered total-C, LDL-C, Apo B, and non-HDL-C compared to fenofibrate administered alone (see Table 13).
TABLE 12: Response to Ezetimibe and Fenofibrate Initiated Concurrently in Patients with Mixed Hyperlipidemia (Mean % Change from Untreated Baseline† at 12 weeks) Treatment (Daily Dose)
| N
| Total-C
| LDL-C
| Apo B
| Non-HDL-C
|
|---|
| †Baseline - on no lipid-lowering drug. |
Placebo
| 63
| 0
| 0
| -1
| 0
|
Ezetimibe
| 185
| -12
| -13
| -11
| -15
|
Fenofibrate 160 mg
| 188
| -11
| -6
| -15
| -16
|
Ezetimibe + Fenofibrate 160 mg
| 183
| -22
| -20
| -26
| -30
|
The changes in lipid endpoints after an additional 48 weeks of treatment with ezetimibe coadministered with fenofibrate or with fenofibrate alone were consistent with the 12-week data displayed above.
HeFH in Pediatric Patients
The effects of ezetimibe coadministered with simvastatin (n=126) compared to simvastatin monotherapy (n=122) have been evaluated in males and females with HeFH. In a multicenter, double-blind, controlled trial followed by an open-label phase, 142 males and 106 postmenarchal females, 10 to 17 years of age (mean age 14.2 years, 43% females, 82% White, 4% Asian, 2% Black or African American, 13% multi-racial; 14% identified as Hispanic or Latino ethnicity) with HeFH were randomized to receive either ezetimibe coadministered with simvastatin or simvastatin monotherapy. Inclusion in the trial required 1) a baseline LDL-C level between 160 and 400 mg/dL and 2) a medical history and clinical presentation consistent with HeFH. The mean baseline LDL-C value was 225 mg/dL (range: 161 to 351 mg/dL) in the ezetimibe coadministered with simvastatin group compared to 219 mg/dL (range: 149 to 336 mg/dL) in the simvastatin monotherapy group. The patients received coadministered ezetimibe and simvastatin (10 mg, 20 mg, or 40 mg) or simvastatin monotherapy (10 mg, 20 mg, or 40 mg) for 6 weeks, coadministered ezetimibe and 40-mg simvastatin or 40-mg simvastatin monotherapy for the next 27 weeks, and open-label coadministered ezetimibe and simvastatin (10 mg, 20 mg, or 40 mg) for 20 weeks thereafter.
The results of the trial at Week 6 are summarized in Table 14. Results at Week 33 were consistent with those at Week 6.
TABLE 13: Mean Percent Difference at Week 6 Between the Pooled Ezetimibe Coadministered with Simvastatin Group and the Pooled Simvastatin Monotherapy Group in Adolescent Patients with HeFH | Total-C
| LDL-C
| Apo B
| Non-HDL-C
|
|---|
Mean percent difference between treatment groups
| -12%
| -15%
| -12%
| -14%
|
95% Confidence Interval
| (-15%, -9%)
| (-18%, -12%)
| (-15%, -9%)
| (-17%, -11%)
|
HoFH in Adults and Pediatric Patients
A trial was conducted to assess the efficacy of ezetimibe in the treatment of HoFH. This double-blind, randomized, 12-week trial enrolled 50 patients (age range 11 to 74 years, 58% female; 90% White, 2% Black or African American, 8% other races identified as Hispanic or Latino) with a clinical and/or genotypic diagnosis of HoFH, with or without concomitant LDL apheresis, already receiving atorvastatin or simvastatin (40 mg). Patients were randomized to one of three treatment groups, atorvastatin or simvastatin (80 mg), ezetimibe administered with atorvastatin or simvastatin (40 mg), or ezetimibe administered with atorvastatin or simvastatin (80 mg). Due to decreased bioavailability of ezetimibe in patients concomitantly receiving cholestyramine [see Drug Interactions (7)], ezetimibe was dosed at least 4 hours before or after administration of resins. Mean baseline LDL-C was 341 mg/dL in those patients randomized to atorvastatin 80 mg or simvastatin 80 mg alone and 316 mg/dL in the group randomized to ezetimibe plus atorvastatin 40 or 80 mg or simvastatin 40 or 80 mg. Ezetimibe, administered with atorvastatin or simvastatin (40- and 80-mg statin groups, pooled), significantly reduced LDL-C (21%) compared with increasing the dose of simvastatin or atorvastatin monotherapy from 40 to 80 mg (7%). In those treated with ezetimibe plus 80-mg atorvastatin or with ezetimibe plus 80-mg simvastatin, LDL-C was reduced by 27%.
Homozygous Sitosterolemia (Phytosterolemia) in Adults and Pediatric Patients
A trial was conducted to assess the efficacy of ezetimibe in the treatment of homozygous sitosterolemia. In this multicenter, double-blind, placebo-controlled, 8-week trial, 37 patients (age range 9 to 72 years, 65% females; 89% White, 3% Asian, 8% other races identified as Hispanic or Latino) with homozygous sitosterolemia with elevated plasma sitosterol levels (>5 mg/dL) on their current therapeutic regimen (diet, bile-acid-binding resins, statins, ileal bypass surgery and/or LDL apheresis), were randomized to receive ezetimibe (n=30) or placebo (n=7). Due to decreased bioavailability of ezetimibe in patients concomitantly receiving cholestyramine [see Drug Interactions (7)], ezetimibe was dosed at least 2 hours before or 4 hours after resins were administered. Excluding the one subject receiving LDL apheresis, ezetimibe significantly lowered plasma sitosterol and campesterol, by 21% and 24% from baseline, respectively. In contrast, patients who received placebo had increases in sitosterol and campesterol of 4% and 3% from baseline, respectively. For patients treated with ezetimibe, mean plasma levels of plant sterols were reduced progressively over the course of the trial. Reductions in sitosterol and campesterol were consistent between patients taking ezetimibe concomitantly with bile acid sequestrants (n=8) and patients not on concomitant bile acid sequestrant therapy (n=21).