Clinical trial NCT01763866
Conditions: Hyperlipidemia
Keywords: High cholesterol, Treatment for high cholesterol, Lowering cholesterol, Lowering high cholesterol, Hypercholesterolemia
Sponsor: Amgen
Start date: 2013-01-15; Completion date: 2013-12-04
Enrollment: 2067 participants; Allocation: RANDOMIZED; Intervention model: PARALLEL

Brief summary:
The primary objective was to evaluate the effect of 12 weeks of evolocumab administered subcutaneously every 2 weeks (Q2W) and monthly (QM) when used in combination with a statin, compared with placebo, on percent change from baseline in low-density lipoprotein cholesterol (LDL-C) in patients with primary hypercholesterolemia and mixed dyslipidemia.

Detailed description:
Prior to the first randomization, participants entered a screening period to determine eligibility. During screening, all participants received subcutaneous placebo corresponding to the once monthly dose volume. Participants who completed the screening period and met eligibility criteria were randomized to 1 of 5 open-label statin cohorts (atorvastatin 10 mg or 80 mg, rosuvastatin 5 mg or 40 mg, or simvastatin 40 mg) for a 4 week lipid stabilization period based on statin therapy at the time of study entry (no statin use vs non-intensive statin use vs intensive statin use).

After the 4-week lipid-stabilization period, eligible patients taking rosuvastatin or simvastatin during the lipid-stabilization phase were then randomized to 1 of 4 treatment groups: evolocumab (140 mg, subcutaneous, every 2 weeks) or matching placebo (subcutaneous, every 2 weeks), or evolocumab (420 mg, subcutaneous, monthly) or matching placebo (subcutaneous, monthly). Patients taking atorvastatin during the lipid-stabilization phase were then randomized to 1 of 6 treatment groups: evolocumab (140 mg, subcutaneous, every 2 weeks) and placebo (oral, daily), evolocumab (420 mg, subcutaneous, monthly) and placebo (oral, daily), placebo (subcutaneous, every 2 weeks) and placebo (oral, daily) or ezetimibe (10 mg, oral, daily), or placebo (subcutaneous, monthly) and placebo (oral, daily) or ezetimibe (10 mg, oral, daily).

A participant was considered randomized into the study after successfully completing the screening period, meeting all inclusion/exclusion criteria, and undergoing both randomization procedures.

Participants randomized to simvastatin who were taking verapamil or diltiazem prior to randomization received simvastatin 10 mg once daily (QD) while participants who were taking amlodipine, amiodarone or ranolazine prior to randomization received simvastatin 20 mg QD. All other participants randomized to simvastatin received simvastatin 40 mg QD.

Arms: arm 1: Participants received atorvastatin 10 mg once daily during the 4 week lipid stabilization period and then in combination with placebo (PBO) subcutaneous injection once every 2 weeks (Q2W) and placebo tablets once daily for up to 12 weeks. arm 2: Participants received atorvastatin 10 mg a day during the 4-week lipid stabilization period and then with placebo subcutaneous injection once every month (QM) and placebo tablets once a day for up to 12 weeks. arm 3: Participants received atorvastatin 10 mg a day during the 4-week lipid stabilization period and then with placebo subcutaneous injection once every 2 weeks and 10 mg ezetimibe (EZE) orally once a day for up to 12 weeks. arm 4: Participants received atorvastatin 10 mg a day during the 4-week lipid stabilization period and then with placebo subcutaneous injection once a month and 10 mg ezetimibe orally once a day for up to 12 weeks. arm 5: Participants received atorvastatin 10 mg a day during the 4-week lipid stabilization period and then with 140 mg evolocumab (EvoMab) by subcutaneous injection once every 2 weeks and placebo tablets once a day for up to 12 weeks. arm 6: Participants received atorvastatin 10 mg a day during the 4-week lipid stabilization period and then with 420 mg evolocumab by subcutaneous injection once a month and placebo tablets once a day for up to 12 weeks arm 7: Participants received atorvastatin 80 mg a day during the 4-week lipid stabilization period and then with placebo subcutaneous injection once every 2 weeks and placebo tablets once a day for up to 12 weeks. arm 8: Participants received atorvastatin 80 mg a day during the 4-week lipid stabilization period and then with placebo subcutaneous injection once every month and placebo tablets once a day for up to 12 weeks. arm 9: Participants received atorvastatin 80 mg a day during the 4-week lipid stabilization period and then with placebo subcutaneous injection once every 2 weeks and 10 mg ezetimibe orally once a day for up to 12 weeks. arm 10: Participants received atorvastatin 80 mg a day during the 4-week lipid stabilization period and then with placebo subcutaneous injection once a month and 10 mg ezetimibe orally once a day for up to 12 weeks. arm 11: Participants received atorvastatin 80 mg a day during the 4-week lipid stabilization period and then with 140 mg evolocumab by subcutaneous injection once every 2 weeks and placebo tablets once a day for up to 12 weeks. arm 12: Participants received atorvastatin 80 mg a day during the 4-week lipid stabilization period and then with 420 mg evolocumab by subcutaneous injection once a month and placebo tablets once a day for up to 12 weeks. arm 13: Participants received rosuvastatin 5 mg a day during the 4-week lipid stabilization period and then with placebo subcutaneous injection once every 2 weeks for up to 12 weeks. arm 14: Participants received rosuvastatin 5 mg a day during the 4-week lipid stabilization period and then with placebo subcutaneous injection once every month for up to 12 weeks. arm 15: Participants received rosuvastatin 5 mg a day during the 4-week lipid stabilization period and then with 140 mg evolocumab by subcutaneous injection once every 2 weeks for up to 12 weeks. arm 16: Participants received rosuvastatin 5 mg a day during the 4-week lipid stabilization period and then with 420 mg evolocumab by subcutaneous injection once a month for up to 12 weeks. arm 17: Participants received rosuvastatin 40 mg a day during the 4-week lipid stabilization period and then with placebo subcutaneous injection once every 2 weeks for up to 12 weeks. arm 18: Participants received rosuvastatin 40 mg a day during the 4-week lipid stabilization period and then with placebo subcutaneous injection once every month for up to 12 weeks. arm 19: Participants received rosuvastatin 40 mg a day during the 4-week lipid stabilization period and then with 140 mg evolocumab by subcutaneous injection once every 2 weeks for up to 12 weeks. arm 20: Participants received rosuvastatin 40 mg a day during the 4-week lipid stabilization period and then with 420 mg evolocumab by subcutaneous injection once a month for up to 12 weeks. arm 21: Participants received simvastatin 40 mg a day during the 4-week lipid stabilization period and then with placebo subcutaneous injection once every 2 weeks for up to 12 weeks. arm 22: Participants received simvastatin 40 mg a day during the 4-week lipid stabilization period and then with placebo subcutaneous injection once every month for up to 12 weeks. arm 23: Participants received simvastatin 40 mg a day during the 4-week lipid stabilization period and then with 140 mg evolocumab by subcutaneous injection once every 2 weeks for up to 12 weeks. arm 24: Participants received simvastatin 40 mg a day during the 4-week lipid stabilization period and then with 420 mg evolocumab by subcutaneous injection once a month for up to 12 weeks.
Interventions: intervention 1: Evolocumab intervention 2: Ezetimibe intervention 3: Placebo to Evolocumab intervention 4: Placebo to Ezetimibe intervention 5: Atorvastatin intervention 6: Rosuvastatin intervention 7: Simvastatin
Intervention descriptions: intervention 1: Administered by subcutaneous injection intervention 2: Administered orally once a day intervention 3: Administered by subcutaneous injection intervention 4: Administered orally once a day intervention 5: Administered orally once a day intervention 6: Administered orally once a day intervention 7: Administered orally once a day

Protocol documents: