Ezetimibe reduces total-C, LDL-C, Apo B, non-HDL-C, and TG, and increases 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 studies in 1,719 patients with primary hyperlipidemia, ezetimibe significantly lowered total-C, LDL-C, Apo B, non-HDL-C, and TG, and increased HDL-C compared to placebo (see
Table 6). 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
†)
|
| Treatment Group
| N
| Total-C
| LDL-C
| Apo B
| Non-HDL-C
| TG
*
| HDL-C
|
Study 1
‡
| Placebo
| 205
| +1
| +1
| -1
| +1
| -1
| -1
|
Ezetimibe
| 622
| -12
| -18
| -15
| -16
| -7
| +1
|
Study 2
‡
| Placebo
| 226
| +1
| +1
| -1
| +2
| +2
| -2
|
Ezetimibe
| 666
| -12
| -18
| -16
| -16
| -9
| +1
|
Pooled Data
‡ (Studies 1 & 2)
| Placebo
| 431
| 0
| +1
| -2
| +1
| 0
| -2
|
Ezetimibe
| 1,288
| -13
| -18
| -16
| -16
| -8
| +1
|
* For triglycerides, median % change from baseline
† Baseline - on no lipid-lowering drug
‡ Ezetimibe significantly reduced total-C, LDL-C, Apo B, non-HDL-C, and TG, and increased HDL-C compared to placebo.
Combination with Statins
Ezetimibe Added to On-going Statin Therapy
In a multicenter, double-blind, placebo-controlled, 8-week study, 769 patients 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, non-HDL-C, and TG, and increased HDL-C compared with a statin administered alone (see
Table 7). 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
‡)
|
Treatment (Daily Dose) | N | Total-C | LDL-C | Apo B | Non-HDL-C | TG† | HDL-C |
On-going Statin + Placebo
§ | 390
| -2
| -4
| -3
| -3
| -3
| +1
|
On-going Statin + Ezetimibe
§ | 379
| -17
| -25
| -19
| -23
| -14
| +3
|
* Patients receiving each statin: 40% atorvastatin, 31% simvastatin, 29% others (pravastatin, fluvastatin, cerivastatin, lovastatin)
† For triglycerides, median % change from baseline
‡ Baseline - on a statin alone.
§ Ezetimibe + statin significantly reduced total-C, LDL-C, Apo B, non-HDL-C, and TG, and increased HDL-C compared to statin alone.
Ezetimibe Initiated Concurrently with a Statin
In four multicenter, double-blind, placebo-controlled, 12-week trials, in 2,382 hyperlipidemic patients, 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, non-HDL-C, and TG, and, with the exception of pravastatin, increased HDL-C compared to the statin administered alone. LDL-C reductions induced by ezetimibe were generally consistent across all statins. (See footnote ‡,
Tables 8 to
11.)
TABLE 8: Response to Ezetimibe and Atorvastatin 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
| TG
⃰
| HDL-C
|
Placebo
| 60
| +4
| +4
| +3
| +4
| -6
| +4
|
Ezetimibe
| 65
| -14
| -20
| -15
| -18
| -5
| +4
|
Atorvastatin 10 mg
| 60
| -26
| -37
| -28
| -34
| -21
| +6
|
Ezetimibe +
Atorvastatin 10 mg
| 65
| -38
| -53
| -43
| -49
| -31
| +9
|
Atorvastatin 20 mg
| 60
| -30
| -42
| -34
| -39
| -23
| +4
|
Ezetimibe +
Atorvastatin 20 mg
| 62
| -39
| -54
| -44
| -50
| -30
| +9
|
Atorvastatin 40 mg
| 66
| -32
| -45
| -37
| -41
| -24
| +4
|
Ezetimibe +
Atorvastatin 40 mg
| 65
| -42
| -56
| -45
| -52
| -34
| +5
|
Atorvastatin 80 mg
| 62
| -40
| -54
| -46
| -51
| -31
| +3
|
Ezetimibe +
Atorvastatin 80 mg
| 63
| -46
| -61
| -50
| -58
| -40
| +7
|
Pooled data (All Atorvastatin Doses)
‡ | 248
| -32
| -44
| -36
| -41
| -24
| +4
|
Pooled data (All Ezetimibe + Atorvastatin Doses)
‡
| 255
| -41
| -56
| -45
| -52
| -33
| +7
|
* For triglycerides, median % change from 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, non-HDL-C, and TG, and increased HDL-C compared to all doses of atorvastatin pooled (10 to 80 mg)
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
| TG
⃰
| HDL-C
|
Placebo
| 70
| -1
| -1
| 0
| -1
| +2
| +1
|
Ezetimibe
| 61
| -13
| -19
| -14
| -17
| -11
| +5
|
Simvastatin 10 mg
| 70
| -18
| -27
| -21
| -25
| -14
| +8
|
Ezetimibe +
Simvastatin 10 mg
| 67
| -32
| -46
| -35
| -42
| -26
| +9
|
Simvastatin 20 mg
| 61
| -26
| -36
| -29
| -33
| -18
| +6
|
Ezetimibe +
Simvastatin 20 mg
| 69
| -33
| -46
| -36
| -42
| -25
| +9
|
Simvastatin 40 mg
| 65
| -27
| -38
| -32
| -35
| -24
| +6
|
Ezetimibe +
Simvastatin 40 mg
| 73
| -40
| -56
| -45
| -51
| -32
| +11
|
Simvastatinn 80 mg
| 67
| -32
| -54
| --45
| -37
| -41
| -23
|
Ezetimibe +
Simvastatin 80 mg
| 65
| -41
| -58
| -47
| -53
| -31
| +8
|
Pooled data (All Simvastatin Doses)
‡ | 263
| -26
| -36
| -30
| -34
| -20
| +7
|
Pooled data (All Ezetimibe
+ Simvastatin Doses)
‡
| 274
| 37
| -51
| -41
| -47
| -29
| +9
|
* For triglycerides, median % change from baseline
† Baseline - on no lipid-lowering drug
‡ Ezetimibe + all doses of simvastatin pooled (10 to 80 mg) significantly reduced total-C, LDL-C, Apo B, non-HDL-C, and TG, and increased HDL-C compared to all doses of simvastatin pooled (10 to 80 mg).