Evaluation of Effect of Alirocumab on Coronary Atheroma Volume in Japanese Patients Hospitalized for Acute Coronary Syndrome With Hypercholesterolemia

Primary Objective:

To compare the efficacy of alirocumab (Praluent®) with standard of care (SoC) on coronary atheroma progression (percent change in normalized total atheroma volume \[TAV\]) after 9 months of treatment in participants who had acute coronary syndrome (ACS) within 4 weeks prior to randomization, with hypercholesterolemia treated with statin.

Secondary Objectives:

* To compare the efficacy of alirocumab (Praluent®) with SoC on secondary endpoints including absolute change in percent atheroma volume and normalized TAV after 9 months of treatment.
* To evaluate the efficacy of alirocumab (Praluent®) on low-density lipoprotein cholesterol (LDL-C), apolipoprotein B, triglycerides, non-high-density lipoprotein cholesterol and lipoprotein (a) after 9 months treatment.
* To evaluate the safety of alirocumab (Praluent®) including the occurrence of cardiovascular events (coronary heart disease death, non-fatal myocardial infarction, fatal and non-fatal ischemic stroke, unstable angina requiring hospitalization) throughout the study.

The duration of study per participant was 9 months.

Eligibility Criteria:
Inclusion criteria :

* Participants hospitalized for ACS (Acute ST-segment elevation myocardial infarction \[STEMI\], Acute non-ST-segment elevation myocardial infarction \[NSTEMI\], and unstable angina.
* LDL-C \>=100 mg/dL at ACS diagnosis.
* Participants who has stenosis with at least \>50% stenosis angiographically within 1 week after the ACS onset, and has analyzable coronary intravascular Ultrasound image.
* Participants aged \>=20 years old at ACS diagnosis.
* Negative Hepatitis B surface antigen, negative Hepatitis B core antibody, and negative Hepatitis C antibody. Or, negative Hepatitis B surface antigen, positive Hepatitis B core antibody, negative Hepatitis B deoxyribonucleic acid, and negative Hepatitis C antibody.
* Written informed consent.

Exclusion criteria:

* Participants who had previously treated with at least one dose of any anti-proprotein convertase subtilisin/kexin type 9 monoclonal antibody.
* Uncontrolled hypertension (multiple reading with systolic blood pressure \>180 mmHg or diastolic blood pressure \>110 mmHg) between ACS diagnosis and randomization visit.
* Known history of hemorrhagic stroke.
* Currently under treatment for cancer.
* Participants on LDL apheresis.
* Any clinically significant abnormality identified that in the judgment of the Investigator or any sub-Investigator would preclude safe completion of the study or constrain endpoints assessment such as major systemic diseases, participants with short life expectancy.
* Considered by the Investigator or any sub-Investigator as inappropriate for this study for any reason, including:

  * Unable to meet specific protocol requirements, such as scheduled visits;
  * Investigator or any sub-Investigator, pharmacist, study coordinator, other study staff or relative thereof directly involved in the conduct of the protocol, etc;
  * Presence of any other conditions (eg, geographic, social, etc.) actual or anticipated, that the Investigator feels would restrict or limit the participant's participation for the duration of the study.
* Laboratory findings measured within 4 weeks after the ACS diagnosis (positive serum or urine pregnancy test in females of childbearing potential).

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