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London, UK – 1 Sept 2015: Alirocumab lowers cholesterol in patients with heterozygous familial hypercholesterolemia to levels unreachable with statins alone, according to results from four ODYSSEY trials presented at ESC Congress today.1 Final data from two of the studies (ODYSSEY FH I and II) are also published in European Heart Journal.2 This analysis in more than 1 250 patients showed that alirocumab rapidly lowered low density lipoprotein cholesterol (LDL-C) to unprecedented levels and the reductions were maintained long term.
EMBARGO : 1 September 2015 at 14:00 BST
“Heterozygous familial hypercholesterolemia is an inherited disease associated with very high levels of LDL-C that can put patients at risk for cardiovascular disease,” said principal investigator Professor John JP Kastelein, professor of medicine in the Department of Vascular Medicine, Academic Medical Centre, University of Amsterdam, the Netherlands. “Approximately 80% of these patients are unable to reach their LDL-C goals.”The study included 1 257 patients with heterozygous familial hypercholesterolemia from four 18-month ODYSSEY trials (FH I, FH II, HIGH FH, LONG TERM). It assessed the benefits of adding the PCSK9 monoclonal antibody alirocumab to statins and other standard of care therapy, compared to standard of care therapy (including statins) and placebo. In FH I and FH II patients initially received alirocumab 75 mg (n=490) compared to placebo (n=245) while in HIGH FH and LONG TERM they initially received alirocumab 150 mg (n=348) compared to placebo (n=174). In addition, patients who initially received alirocumab 75 mg had their dose adjusted to 150 mg at week 12 if they did not achieve their pre-specified LDL-C goal by week eight.The primary endpoint of all four trials was the percentage change in LDL-C from baseline to week 24, analysed by intention to treat. The researchers found that patients who initially received alirocumab 75 mg had an average 55.8% greater reduction in LDL-C from baseline versus placebo, and those who initially received alirocumab 150 mg had an average 56.4% greater reduction (p<0.0001 for both comparisons).Using measures that were collected while patients were still receiving treatment (on-treatment analyses), LDL-C reductions were maintained over 78 weeks with an average 56.1% greater reduction versus placebo in the group initially treated with alirocumab 75 mg and potentially uptitrated to 150 mg and 63.2% greater reduction versus placebo in the patients treated only with alirocumab 150 mg group (p<0.0001 for both comparisons).The average LDL-C level at baseline was 3.7 mmol/L (141.2 mg/dL) in the pool of FH I and FH II patients and 4.3 mmol/L (166.1 mg/dL) in the pool of HIGH FH and LONG TERM patients with heterozygous familial hypercholesterolemia. In on-treatment analyses, alirocumab reduced average LDL-C levels to less than 2.2 mmol/L (85 mg/dl) by week 12 and reductions were maintained to week 78. Treatment-emergent adverse events occurred in a similar proportion of patients on alirocumab (80.5%) and placebo (83%) leading to study discontinuation in 3.9% and 3.6% patients, respectively.“This is the largest Phase 3 analysis of patients with heterozygous familial hypercholesterolemia,” said Professor Kastelein. “Despite high baseline levels, alirocumab reduced LDL-C concentrations to less than 1.8 mmol/L (70 mg/dL) at week 24 in 63% of patients in FH I and II and in 56% of patients in the pool of HIGH FH and LONG TERM patients. Studies with other lipid lowering therapies have only reached LDL-C levels of less than 2.5 mmol/L (97 mg/dL) in around 20% of patients.”“The results show that adding alirocumab to statins in patients with heterozygous familial hypercholesterolemia rapidly lowers LDL-C to unprecedented levels that are unreachable with statins alone, and that these reductions are maintained in the long term,” he continued. “Alirocumab is a PCSK9 inhibitor and belongs to a new class of cholesterol-lowering monoclonal antibodies. It works by preventing action of the PCSK9 protein, which in turn increases the number of LDL receptors and thus increases uptake of LDL-C from the circulation.”Professor Kastelein concluded: “Adding alirocumab to statins may be an important treatment strategy for patients not able to reach their LDL-C goals with statins alone.”ENDS
1Professor Kastelein will present the abstract ‘Efficacy and safety of the PCSK9 monoclonal antibody alirocumab vs placebo in 1257 patients with heterozygous familial hypercholesterolaemia (HeFH): analyses up to 78 weeks from four ODYSSEY trials’ at 14:00 during:• Clinical Trial Update III – Pharmacology & therapy on Tuesday 1 September at 14:00 in Hyde Park (The Hub) • 2Kastelein JJP, Ginsberg HN, Langslet G, et al. ODYSSEY FH I and FH II: 78 week results with alirocumab treatment in 735 patients with heterozygous familial hypercholesterolaemia. Eur Heart J. 2015; doi:10.1093/eurheartj/ehv370
SOURCES OF FUNDING: The study was sponsored by Sanofi and Regeneron Pharmaceuticals, Inc.DISCLOSURES: Dr Kastelein has received consultancy fees from Cerenis, The Medicines Company, CSL Behring, Amgen, Regeneron Pharmaceuticals, Inc., Eli Lilly, Genzyme, Aegerion, Esperion, AstraZeneca, Omthera, Pronova, Vascular Biogenics, Boehringer Ingelheim, Catabasis, AtheroNova, UniQure, Novartis, Merck, Isis Pharmaceuticals, Kowa, Dezima Pharmaceuticals, and Pfizer.
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About the European Society of CardiologyThe European Society of Cardiology (ESC) represents more than 90 000 cardiology professionals across Europe and worldwide. Its mission is to reduce the burden of cardiovascular disease in Europe. About ESC Congress 2015ESC Congress is the world’s largest and most influential cardiovascular event contributing to global awareness of the latest clinical trials and breakthrough discoveries. ESC Congress 2015 takes place 29 August to 2 September at ExCel London in London, UK. Access the scientific programme. More information is available from the ESC Press Office at email@example.com.To access all the scientific resources from the sessions during the congress, visit ESC Congress 365. This press release accompanies both a presentation and an ESC press conference at the ESC Congress 2015. Edited by the ESC from material supplied by the investigators themselves, this press release does not necessarily reflect the opinion of the European Society of Cardiology. The content of the press release has been approved by the presenter.
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