Effect of Alirocumab on Coronary Atheroma Volume in Japanese Patients With Acute Coronary Syndrome - The ODYSSEY J-IVUS Trial

Circ J. 2019 Sep 25;83(10):2025-2033. doi: 10.1253/circj.CJ-19-0412. Epub 2019 Aug 20.


Background: In patients with acute coronary syndrome (ACS), alirocumab reduced the risk of recurring ischemic events. ODYSSEY J-IVUS assessed the effect of alirocumab on coronary atheroma volume in Japanese patients recently hospitalized with ACS and hypercholesterolemia, using intravascular ultrasound imaging analysis.Methods and Results:Patients (n=206) who at index ACS diagnosis either had low-density lipoprotein cholesterol (LDL-C) ≥2.59 mmol/L (≥100 mg/dL) despite stable statin therapy, or were not on statins with LDL-C levels above target after statin initiation, were randomized (1:1) to alirocumab (75 mg every 2 weeks [Q2 W]/up to 150 mg Q2 W), or standard of care (SoC; atorvastatin ≥10 mg/day or rosuvastatin ≥5 mg/day) for 36 weeks. The primary efficacy endpoint (week [W] 36 mean [standard error] percent change in normalized total atheroma volume [TAV] from baseline) was -3.1 (1.0)% with SoC vs. -4.8 (1.0)% with alirocumab (between-group difference: -1.6 [1.4]; P=0.23). W36 absolute change from baseline in percent atheroma volume was -1.3 (0.4)% (SoC) and -1.4 (0.4)% (alirocumab; nominal P=0.79). At W36, LDL-C was reduced from baseline by 13.4% (SoC) vs. 63.9% (alirocumab; nominal P<0.0001). In total, 61.8% (SoC) and 75.7% (alirocumab) of patients reported treatment-emergency adverse events.

Conclusions: In Japanese patients with ACS and hypercholesterolemia inadequately controlled despite statin therapy, from baseline to W36, a numerically greater percent reduction in normalized TAV was observed with alirocumab vs. SoC, which did not reach statistical significance.

Trial registration: ClinicalTrials.gov NCT02984982.

Keywords: Atherosclerosis; Coronary artery disease; Hypercholesterolemia; Intravascular ultrasound; Lipids.

Publication types

  • Clinical Trial, Phase IV
  • Multicenter Study
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acute Coronary Syndrome / blood
  • Acute Coronary Syndrome / diagnostic imaging
  • Acute Coronary Syndrome / drug therapy*
  • Aged
  • Antibodies, Monoclonal, Humanized / adverse effects
  • Antibodies, Monoclonal, Humanized / therapeutic use*
  • Anticholesteremic Agents / adverse effects
  • Anticholesteremic Agents / therapeutic use*
  • Biomarkers / blood
  • Cholesterol, LDL / blood*
  • Coronary Artery Disease / blood
  • Coronary Artery Disease / diagnostic imaging
  • Coronary Artery Disease / drug therapy*
  • Female
  • Humans
  • Hydroxymethylglutaryl-CoA Reductase Inhibitors / therapeutic use
  • Hypercholesterolemia / blood
  • Hypercholesterolemia / diagnosis
  • Hypercholesterolemia / drug therapy*
  • Japan
  • Male
  • Middle Aged
  • Plaque, Atherosclerotic*
  • Proprotein Convertase 9 / antagonists & inhibitors
  • Serine Proteinase Inhibitors / adverse effects
  • Serine Proteinase Inhibitors / therapeutic use*
  • Time Factors
  • Treatment Outcome


  • Antibodies, Monoclonal, Humanized
  • Anticholesteremic Agents
  • Biomarkers
  • Cholesterol, LDL
  • Hydroxymethylglutaryl-CoA Reductase Inhibitors
  • Serine Proteinase Inhibitors
  • PCSK9 protein, human
  • Proprotein Convertase 9
  • alirocumab

Associated data

  • ClinicalTrials.gov/NCT02984982