• Kausik K Ray, R Scott Wright, David Kallend, Wolfgang Koenig, Lawrence A Leiter, Frederick J Raal, Jenna A Bisch, Tara Richardson, Mark Jaros, Peter L J Wijngaard, KasteleinJohn J PJJPFrom the Imperial Centre for Cardiovascular Disease Prevention, Department of Primary Care and Public Health, Imperial College London, London (K.K.R.); the Department of Cardiology, Mayo Clinic, Rochester, MN (R.S.W.); the Medicines Co, and ORION-10 and ORION-11 Investigators.
• From the Imperial Centre for Cardiovascular Disease Prevention, Department of Primary Care and Public Health, Imperial College London, London (K.K.R.); the Department of Cardiology, Mayo Clinic, Rochester, MN (R.S.W.); the Medicines Company, Zurich, Switzerland (D.K.); Deutsches Herzzentrum München, Technische Universität München, and Deutsches Zentrum für Herz-Kreislauf-Forschung (German Center for Cardiovascular Research), partner site Munich Heart Alliance, Munich, and the Institute of Epidemiology and Medical Biometry, University of Ulm, Ulm - all in Germany (W.K.); Li Ka Shing Knowledge Institute, St. Michael's Hospital, University of Toronto, Toronto (L.A.L.); the Department of Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg (F.J.R.); the Medicines Company, Parsippany, NJ (J.A.B., T.R., P.L.J.W.); Summit Analytical, Denver (M.J.), and the Department of Vascular Medicine, Academic Medical Center, University of Amsterdam, Amsterdam (J.J.P.K.).
• N. Engl. J. Med. 2020 Apr 16; 382 (16): 1507-1519.

BackgroundInclisiran inhibits hepatic synthesis of proprotein convertase subtilisin-kexin type 9. Previous studies suggest that inclisiran might provide sustained reductions in low-density lipoprotein (LDL) cholesterol levels with infrequent dosing.MethodsWe enrolled patients with atherosclerotic cardiovascular disease (ORION-10 trial) and patients with atherosclerotic cardiovascular disease or an atherosclerotic cardiovascular disease risk equivalent (ORION-11 trial) who had elevated LDL cholesterol levels despite receiving statin therapy at the maximum tolerated dose. Patients were randomly assigned in a 1:1 ratio to receive either inclisiran (284 mg) or placebo, administered by subcutaneous injection on day 1, day 90, and every 6 months thereafter over a period of 540 days. The coprimary end points in each trial were the placebo-corrected percentage change in LDL cholesterol level from baseline to day 510 and the time-adjusted percentage change in LDL cholesterol level from baseline after day 90 and up to day 540.ResultsA total of 1561 and 1617 patients underwent randomization in the ORION-10 and ORION-11 trials, respectively. Mean (±SD) LDL cholesterol levels at baseline were 104.7±38.3 mg per deciliter (2.71±0.99 mmol per liter) and 105.5±39.1 mg per deciliter (2.73±1.01 mmol per liter), respectively. At day 510, inclisiran reduced LDL cholesterol levels by 52.3% (95% confidence interval [CI], 48.8 to 55.7) in the ORION-10 trial and by 49.9% (95% CI, 46.6 to 53.1) in the ORION-11 trial, with corresponding time-adjusted reductions of 53.8% (95% CI, 51.3 to 56.2) and 49.2% (95% CI, 46.8 to 51.6) (P<0.001 for all comparisons vs. placebo). Adverse events were generally similar in the inclisiran and placebo groups in each trial, although injection-site adverse events were more frequent with inclisiran than with placebo (2.6% vs. 0.9% in the ORION-10 trial and 4.7% vs. 0.5% in the ORION-11 trial); such reactions were generally mild, and none were severe or persistent.ConclusionsReductions in LDL cholesterol levels of approximately 50% were obtained with inclisiran, administered subcutaneously every 6 months. More injection-site adverse events occurred with inclisiran than with placebo. (Funded by the Medicines Company; ORION-10 and ORION-11 ClinicalTrials.gov numbers, NCT03399370 and NCT03400800.).Copyright © 2020 Massachusetts Medical Society.

36 keywords...

hide…