Efficacy and Safety Evaluation of Alirocumab (SAR236553/REGN727) in Patients With Primary Hypercholesterolemia on Stable Atorvastatin Therapy in Japan

A Multicenter, Randomized, Double-blind, Parallel-group, Placebo-controlled Study Evaluating the Efficacy and Safety of Three Doses of SAR236553 (REGN727) Over 12 Weeks in Patients With Primary Hypercholesterolemia and LDL-cholesterol ≥100 mg/dL (≥2.59 mmol/L) on Ongoing Stable Atorvastatin Therapy

Alirocumab (SAR236553/REGN727) is a fully human monoclonal antibody that binds proprotein convertase subtilisin/kexin type 9 (PCSK9).

Primary Objective of the study:

To evaluate the effect of alirocumab on low-density lipoprotein cholesterol (LDL-C) levels after 12 weeks of treatment in comparison with placebo in participants with LDL-C ≥100 mg/dL (≥2.59 mmol/L) on ongoing stable atorvastatin therapy.

Secondary Objectives:

• To evaluate the effects of alirocumab on other lipid levels after 12 weeks of treatment in comparison with placebo
• To evaluate the safety and tolerability of alirocumab
• To evaluate the development of anti-alirocumab antibodies
• To evaluate the pharmacokinetics of alirocumab

The duration of study participation depended on the status of the participant at screening: 21 to 27 weeks including a screening/run-in period of 1 to 7 weeks, a double-blind treatment period of 12 weeks, followed by an 8-week follow-up period.

Inclusion criteria :

- Participants with primary hypercholesterolemia treated with atorvastatin at stable dose of 5-20 mg for at least 6 weeks prior to screening and likely to have LDL-C ≥100 mg/dL (≥2.59 mmol/L) at the screening visit.

OR

- Participants with primary hypercholesterolemia who were receiving a lipid-lowering treatment other than atorvastatin, or who were not at stable dose of atorvastatin 5-20 mg for at least 6 weeks prior to screening if they were likely to have LDL-C ≥100 mg/dL (≥2.59 mmol/L) after a 6-week run-in treatment period on atorvastatin therapy.

Exclusion criteria:

1. LDL-C <100 mg/dL (<2.59 mmol/L)

   • at screening visit for participants who were being treated with stable dose of atorvastatin 5-20 mg for at least 6 weeks prior to screening OR
   • at the end of the 6-week run-in period on atorvastatin for participants receiving a lipid lowering treatment other than atorvastatin, or not at stable dose of atorvastatin 5-20 mg for at least 6 weeks prior to screening

2. Participants with type 1 diabetes

3. Participants with type 2 diabetes treated with insulin, or without, and considered poorly controlled at screening.

The above information is not intended to contain all considerations relevant to a participant's potential participation in a clinical trial.