European journal of preventive cardiology · 2026
Prediction of inclisiran efficacy in patients with established atherosclerotic cardiovascular disease: the SIRIUS in-silico modelling of cardiovascular outcomes.
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Angoulvant Denis, Peyronnet Emmanuel, Cariou Bertrand, Amarenco Pierre, Boccara Franck, Boissel Jean-Pierre, Bastien Alexandre, Courcelles Eulalie, Diatchenko Alizée, Filipovics Anne, Granjeon-Noriot Solène, Kahoul Riad, Mahé Guillaume, Portal Lolita, Porte Solène, Wang Yishu, Bechet Emmanuelle, Steg Philippe Gabriel
Аннотация
AIMS: Inclisiran, an siRNA-targeting hepatic PCSK9 mRNA, reduces low-density lipoprotein cholesterol (LDL-C), but its effect on major adverse cardiovascular event (MACE) remains unconfirmed. The SIRIUS in-silico modelling programme aimed to predict the efficacy of inclisiran on MACE in virtual patients with atherosclerotic cardiovascular disease (ASCVD).
METHODS AND RESULTS: The SIRIUS simulation (NCT05974345) used a validated mechanistic model of ASCVD and lipid-lowering therapy (LLT) effects in a virtual population with established ASCVD and LDL-C ≥ 70 mg/dL. Each virtual patient served as their own control to compare inclisiran vs. placebo as an adjunct to high-intensity statin therapy, alone or with ezetimibe over 5 years. The model did not account for non-adherence, recurrent events, or adverse effects. Among 204 691 virtual patients, inclisiran was predicted to reduce LDL-C by 49.7% vs. placebo (from 91.1 to 48.3 mg/dL). Relative to placebo, inclisiran was predicted to lower 5 years risk of 3-point MACE by 25.2% (11.3% vs. 14.9%), myocardial infarction by 34.8% [5.7% vs. 8.6%; hazard ratio (HR) 0.65], ischaemic stroke by 26% (2.6% vs. 3.4%; HR 0.74), and major adverse limb event by 34.1% (0.5% vs. 0.8%; HR 0.66). A 7.1% relative reduction of cardiovascular death was predicted (4.2% vs. 4.5%; HR 0.93).
CONCLUSION: SIRIUS is the first in-silico simulation using a knowledge-based mechanistic model to predict the efficacy of LLT on cardiovascular outcomes in ASCVD. These findings offer an early model-based prediction of inclisiran's potential cardiovascular benefit ahead of Phase 3 outcome trials.
LAY SUMMARY: The SIRIUS in-silico simulation used a validated knowledge-based mechanistic computational model to computationally simulate inclisiran efficacy on 5-year MACE in 204 691 virtual patients with atherosclerotic cardiovascular disease (ASCVD).Mean predicted percentage reduction in LDL-C with inclisiran vs. placebo was 49.7% at 5 years, with a 25.2% reduction in 3-point MACE.This simulation provides early insights into the potential effect of inclisiran on cardiovascular event reduction in advance of results from ongoing Phase 3 trial.
METHODS AND RESULTS: The SIRIUS simulation (NCT05974345) used a validated mechanistic model of ASCVD and lipid-lowering therapy (LLT) effects in a virtual population with established ASCVD and LDL-C ≥ 70 mg/dL. Each virtual patient served as their own control to compare inclisiran vs. placebo as an adjunct to high-intensity statin therapy, alone or with ezetimibe over 5 years. The model did not account for non-adherence, recurrent events, or adverse effects. Among 204 691 virtual patients, inclisiran was predicted to reduce LDL-C by 49.7% vs. placebo (from 91.1 to 48.3 mg/dL). Relative to placebo, inclisiran was predicted to lower 5 years risk of 3-point MACE by 25.2% (11.3% vs. 14.9%), myocardial infarction by 34.8% [5.7% vs. 8.6%; hazard ratio (HR) 0.65], ischaemic stroke by 26% (2.6% vs. 3.4%; HR 0.74), and major adverse limb event by 34.1% (0.5% vs. 0.8%; HR 0.66). A 7.1% relative reduction of cardiovascular death was predicted (4.2% vs. 4.5%; HR 0.93).
CONCLUSION: SIRIUS is the first in-silico simulation using a knowledge-based mechanistic model to predict the efficacy of LLT on cardiovascular outcomes in ASCVD. These findings offer an early model-based prediction of inclisiran's potential cardiovascular benefit ahead of Phase 3 outcome trials.
LAY SUMMARY: The SIRIUS in-silico simulation used a validated knowledge-based mechanistic computational model to computationally simulate inclisiran efficacy on 5-year MACE in 204 691 virtual patients with atherosclerotic cardiovascular disease (ASCVD).Mean predicted percentage reduction in LDL-C with inclisiran vs. placebo was 49.7% at 5 years, with a 25.2% reduction in 3-point MACE.This simulation provides early insights into the potential effect of inclisiran on cardiovascular event reduction in advance of results from ongoing Phase 3 trial.