|By PR Newswire||
|March 31, 2014 07:00 AM EDT|
Data From Two Separate Phase 3 Studies of Evolocumab (AMG 145), a PCSK9 Inhibitor, Presented in Late-Breaking Clinical Trials Session at ACC.14
Data Presented at ACC.14 From Five Phase 3 Studies in More Than 4,000 Patients Form the Basis of Global Filing Plan
Please Note: This information is intended for Canadian media only. The safety and efficacy of evolocumab are still under investigation, and Amgen has not yet obtained authorization from Health Canada for sale of the product in Canada.
MISSISSAUGA, ON, March 31, 2014 /CNW/ - Amgen Canada Inc. today announced new detailed data from two Phase 3 pivotal studies that showed treatment with its novel investigational cholesterol-lowering medication, evolocumab (AMG 145), resulted in a statistically significant reduction in low-density lipoprotein cholesterol (LDL-C) between 37-39 per cent, compared to ezetimibe in patients with high cholesterol who cannot tolerate statins (GAUSS-2) and between 55-76 per cent compared to placebo when used in combination with statin therapy in patients with high cholesterol (LAPLACE-2). Results from the two separate Phase 3 studies, GAUSS-2 and LAPLACE-2, were presented as Late-Breaking Clinical Trials and complement the three Phase 3 studies presented as Featured Clinical Research at the American College of Cardiology's 63rd Annual Scientific Session (ACC.14). Positive results from the GAUSS-2 study were simultaneously published in the Journal of the American College of Cardiology.
Evolocumab is an investigational fully human monoclonal antibody that inhibits proprotein convertase subtilisin/kexin type 9 (PCSK9), a protein that reduces the liver's ability to remove LDL-C from the blood.1
In the GAUSS-2 study, the most common adverse events (AEs) (≥5 per cent in the combined evolocumab group) were headache, myalgia, pain in extremity and muscle spasms. In the LAPLACE-2 study, no AEs occurred in ≥ 2 per cent of the evolocumab combined group. The most common AEs in the evolocumab combined group (>1.5 per cent) were back pain, arthralgia, headache, muscle spasms and pain in extremity.
"As treatment with statins continues to be an important tool in the management of high cholesterol, we are encouraged by the positive data from the Phase 3 studies of evolocumab in patients with statin intolerance and in patients already on statin therapy," said Sean E. Harper, M.D., executive vice president of Research and Development at Amgen. "We hope that evolocumab will be able to help patients who are on a moderate or high-intensity statin and not adequately controlled, as well as patients who cannot tolerate statins and are in need of an alternate treatment option to help lower their LDL cholesterol levels."
"Results from the five Phase 3 pivotal studies that we presented at ACC span more than 4,000 patients and provide us with important insights on the potential of evolocumab as a treatment for a range of patients at-risk for cardiovascular disease," Harper added. "We are working closely with regulatory authorities on our global filing plan in hopes of bringing this new treatment option to patients with dyslipidemia."
GAUSS-2 (Goal Achievement After Utilizing an Anti-PCSK9 Antibody in Statin to Intolerant Subjects-2) Primary Results
- The GAUSS-2 study showed that in 307 patients with high cholesterol who could not tolerate effective doses of at least two different statins due to muscle-related side effects, treatment with subcutaneous evolocumab (140 mg every two weeks or 420 mg monthly), significantly reduced mean LDL-C by 37-39 per cent from baseline compared to ezetimibe (p<0.001).
- Results of the study showed the mean per cent reduction from baseline in LDL-C at weeks 10 and 12 were 37 per cent for evolocumab 140 mg every two weeks and 39 per cent for evolocumab 420 mg monthly compared to ezetimibe.
- At week 12, the per cent reduction from baseline in LDL-C was 38 per cent for evolocumab 140 mg every two weeks and 38 per cent for evolocumab 420 mg monthly compared to ezetimibe.
- The most common AEs (> 5 per cent in evolocumab combined group) were headache (7.8 per cent evolocumab; 8.8 per cent ezetimibe), myalgia (7.8 per cent evolocumab; 17.6 per cent ezetimibe), pain in extremity (6.8 per cent evolocumab; 1.0 per cent ezetimibe) and muscle spasms (6.3 per cent evolocumab; 3.9 per cent ezetimibe).
LAPLACE-2 (LDL-C Assessment with PCSK9 MonoclonaL Antibody Inhibition Combined with Statin ThErapy-2) Primary Results
- The LAPLACE-2 study showed that in 1,896 patients with high cholesterol (LDL-C > 2.1 mmol/L), treatment with subcutaneous evolocumab (140 mg every two weeks or 420 mg monthly) in combination with different daily doses of statin therapy significantly reduced mean LDL-C by 55-76 per cent from baseline compared to placebo and 38-47 per cent from baseline compared to ezetimibe (p<0.001).
- Results of the study showed the mean reduction in LDL-C from baseline at weeks 10 and 12 was between 66-75 per cent for evolocumab 140 mg every two weeks versus placebo and between 38-45 per cent versus ezetimibe, for all statin cohorts.
- Results of the study also showed the mean per cent reduction in LDL-C from baseline at weeks 10 and 12 was between 63-75 per cent for evolocumab 420 mg monthly versus placebo and 44 per cent versus ezetimibe, for all statin cohorts.
- At week 12, the per cent reduction from baseline in LDL-C was between 68-76 per cent for evolocumab 140 mg every two weeks and between 55-71 per cent for evolocumab 420 mg monthly, compared to placebo, for all statin cohorts. Compared with ezetimibe, evolocumab reduced LDL-C from baseline between 40-47 per cent when dosed every two weeks and between 39-41 per cent when dosed monthly, for all statin cohorts.
- No AEs occurred in ≥ 2 per cent of the evolocumab combined group. The most common AEs in the evolocumab combined group were back pain (1.8 per cent evolocumab; 3.2 per cent ezetimibe; 2.5 per cent placebo), arthralgia (1.7 per cent evolocumab; 1.8 per cent ezetimibe; 1.6 per cent placebo), headache (1.7 per cent evolocumab; 2.3 per cent ezetimibe; 2.7 per cent placebo), muscle spasms (1.5 per cent evolocumab; 2.7 per cent ezetimibe; 1.1 per cent placebo) and pain in extremity (1.5 per cent evolocumab; 1.4 per cent ezetimibe; 1.3 per cent placebo).
"Some patients being treated for increased cholesterol levels continue to encounter cardiovascular issues," said Dr. Jacques Genest, Professor, Faculty of Medicine at McGill University. "The results from the GAUSS-2 and LAPLACE-2 studies for evolocumab may offer a new lipid-lowering treatment option for high-risk patients, or it may help patients control their LDL cholesterol levels when their current treatments are not sufficient."
High cholesterol is the most common form of dyslipidemia, which is an abnormality of lipids in the blood.2,3 According to the Canadian Health Measures Survey, more than 40 per cent of Canadians aged 20 to 79 have an unhealthy level of total cholesterol.4 High blood cholesterol is a major risk factor for heart disease and stroke.5
Amgen's webcast investor meeting at ACC.14, as with other selected presentations regarding developments in Amgen's business given by management at certain investor and medical conferences, can be found on Amgen's website, www.amgen.com, under Investors. The webcast will be archived and available for replay for at least 90 days after the event.
GAUSS-2 Study Design
GAUSS-2 (Goal Achievement After Utilizing an Anti-PCSK9 Antibody in Statin Intolerant Subjects-2) is a Phase 3 randomized, multicenter, double-blind, placebo- and ezetimibe-controlled trial designed to evaluate the safety, tolerability and efficacy of evolocumab in 307 hyperlipidemic patients who could not tolerate effective doses of at least two different statins due to muscle-related side effects. Patients were randomized to one of four treatment groups: subcutaneous evolocumab 140 mg every two weeks and oral placebo daily; subcutaneous evolocumab 420 mg monthly and oral placebo daily; subcutaneous placebo every two weeks and oral ezetimibe 10 mg daily; or subcutaneous placebo monthly and oral ezetimibe 10 mg daily. The co-primary endpoints were the per cent reduction from baseline in LDL-C at week 12 and the mean per cent reduction from baseline in LDL-C at weeks 10 and 12. Secondary efficacy endpoints included means at weeks 10 and 12 and at week 12 for the following: absolute change from baseline in LDL-C; LDL-C < 1.8 mmol/L; and the percentage change from baseline in non-high-density lipoprotein cholesterol (non-HDL-C), apolipoprotein B (ApoB), total cholesterol (TC)/HDL-C ratio, ApoB/apolipoprotein A1 (ApoA1) ratio, lipoprotein(a), triglycerides, HDL-C and very low-density lipoprotein cholesterol (VLDL-C).
LAPLACE-2 Study Design
LAPLACE-2 (LDL-C Assessment with PCSK9 MonoclonaL Antibody Inhibition Combined with Statin ThErapy-2) is a Phase 3 randomized, multicenter, double-blind, placebo- and ezetimibe-controlled study designed to evaluate safety, tolerability and efficacy of evolocumab in 1,896 patients with primary hypercholesterolemia and mixed dyslipidemia (LDL-C ≥ 2.1 mmol/L) when added to statin therapy. Patients were randomized to one of 24 treatment groups in a two-step randomization. Eligible patients were initially randomized to one of five open label background statin treatments: atorvastatin 10 mg, atorvastatin 80 mg, rosuvastatin 5 mg, rosuvastatin 40 mg or simvastatin 40 mg daily. Patients randomized to atorvastatin were then randomized to one of six treatment groups: evolocumab every two weeks and oral placebo, evolocumab every month and oral placebo, subcutaneous placebo every two weeks and oral placebo, subcutaneous placebo every month and oral placebo, subcutaneous placebo every two weeks and ezetimibe 10 mg, or subcutaneous placebo every month and ezetimibe 10 mg. Patients randomized to rosuvastatin or simvastatin were then randomized to one of four treatment groups: evolocumab every two weeks, evolocumab every month, subcutaneous placebo every two weeks, or subcutaneous placebo every month.
The co-primary endpoints were the mean per cent change from baseline in LDL-C at weeks 10 and 12 and the per cent change in LDL-C reduction at week 12. Co-secondary efficacy endpoints included means at weeks 10 and 12 and at week 12 for the following: LDL-C < 1.8 mmol/L; absolute change from baseline in LDL-C; and the percentage change from baseline in non-high-density lipoprotein cholesterol (non-HDL-C), apolipoprotein B (ApoB), total cholesterol (TC)/HDL-C ratio, ApoB/apolipoprotein A1 (ApoA1) ratio, lipoprotein(a), triglycerides, HDL-C and very low-density lipoprotein cholesterol (VLDL-C).
Evolocumab is a fully human monoclonal antibody that inhibits proprotein convertase subtilisin/kexin type 9 (PCSK9).1 PCSK9 is a protein that targets LDL receptors for degradation and thereby reduces the liver's ability to remove LDL-C, or "bad" cholesterol, from the blood.6 Evolocumab, being developed by Amgen scientists, is designed to bind to PCSK9 and inhibit PCSK9 from binding to LDL receptors on the liver surface. In the absence of PCSK9, there are more LDL receptors on the surface of the liver to remove LDL-C from the blood.1
About PROFICIO: The Evolocumab Clinical Trial Program
PROFICIO, which stands for the Program to Reduce LDL-C and Cardiovascular Outcomes Following Inhibition of PCSK9 In Different POpulations, is a large and comprehensive clinical trial program evaluating evolocumab in 20 clinical trials, with a combined planned enrollment of nearly 30,000 patients.
The Phase 3 program includes 14 trials to evaluate evolocumab administered every two weeks and monthly in multiple patient populations, including in combination with statins in patients with hyperlipidemia (LAPLACE-2 and YUKAWA-2); in patients with hyperlipidemia who cannot tolerate statins (GAUSS-2 and GAUSS-3); as a stand-alone treatment in patients with hyperlipidemia (MENDEL-2); in patients whose elevated cholesterol is caused by genetic disorders called heterozygous (RUTHERFORD-2 and TAUSSIG) and homozygous (TESLA and TAUSSIG) familial hypercholesterolemia; as well as the administration of evolocumab (THOMAS-1 and THOMAS-2).
Five studies in the evolocumab Phase 3 program will provide long-term safety and efficacy data. These include FOURIER (Further Cardiovascular OUtcomes Research with PCSK9 Inhibition in Subjects with Elevated Risk), which will assess whether treatment with evolocumab in combination with statin therapy compared to placebo and statin therapy reduces recurrent cardiovascular events in approximately 22,500 patients with cardiovascular disease; DESCARTES (Durable Effect of PCSK9 Antibody CompARed wiTh PlacEbo Study) in patients with hyperlipidemia at risk for cardiovascular disease; OSLER-2 (Open Label Study of Long TERm Evaluation Against LDL-C Trial-2) in patients with high cholesterol who completed any of the Phase 3 studies; GLAGOV (GLobal Assessment of Plaque ReGression with a PCSK9 AntibOdy as Measured by IntraVascular Ultrasound), which will determine the effect of evolocumab on coronary atherosclerosis in approximately 950 patients undergoing cardiac catheterization; and TAUSSIG (Trial Assessing Long Term USe of PCSK9 Inhibition in Subjects with Genetic LDL Disorders), which will assess the long-term safety and efficacy of evolocumab on LDL-C in patients with severe familial hypercholesterolemia.
About Amgen's Commitment to Cardiovascular Disease
Amgen is dedicated to addressing important scientific questions in order to advance care and improve the lives of patients with cardiovascular disease. Through its own research and development efforts and innovative partnerships, Amgen has built a robust cardiology pipeline consisting of several investigational molecules in an effort to address a number of today's important unmet patient needs, such as high cholesterol and heart failure.
About Amgen Canada
As a leader in innovation, Amgen Canada understands the value of science. With main operations located in Mississauga, Ont.'s vibrant biomedical cluster, and its research facility in Burnaby, B.C., Amgen Canada has been an important contributor to advancements in science and innovation in Canada since 1991. The company contributes to the development of new therapies or new uses for existing medicines in partnership with many of Canada's leading health-care, academic, research, government and patient organizations. To learn more about Amgen Canada, visit www.amgen.ca.
This news release contains forward-looking statements that are based on management's current expectations and beliefs and are subject to a number of risks, uncertainties and assumptions that could cause actual results to differ materially from those described. All statements, other than statements of historical fact, are statements that could be deemed forward-looking statements, including estimates of revenues, operating margins, capital expenditures, cash, other financial metrics, expected legal, arbitration, political, regulatory or clinical results or practices, customer and prescriber patterns or practices, reimbursement activities and outcomes and other such estimates and results. Forward-looking statements involve significant risks and uncertainties, including those discussed below and more fully described in the Securities and Exchange Commission (SEC) reports filed by Amgen, including Amgen's most recent annual report on Form 10-K and any subsequent periodic reports on Form 10-Q and Form 8-K. Please refer to Amgen's most recent Forms 10-K, 10-Q and 8-K for additional information on the uncertainties and risk factors related to our business. Unless otherwise noted, Amgen is providing this information as of March 30, 2014, and expressly disclaims any duty to update information contained in this news release.
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1. Amgen Data on File, Investigator Brochure.
2. World Health Organization. Quantifying Selected Major Risks to Health. In: The World Health Report 2002 - Reducing Risks, Promoting Healthy Life. Chapter 4: Geneva: World Health Organization;202:47-97.
3. Merck Manuals website. http://www.merckmanuals.com/professional/endocrine_and_metabolic_disorders/lipid_disorders/dyslipidemia.html. Accessed March 2014.
4. Statistics Canada. The Canadian Health Measures Survey. http://www.statcan.gc.ca/pub/82-625-x/2010001/article/11136-eng.htm Accessed March 2014.
5. Heart and Stroke Foundation of Canada http://www.heartandstroke.com/site/c.ikIQLcMWJtE/b.3484027/k.8419/Heart_disease__High_blood_cholesterol.htm Accessed March 2014.
6. Abifadel M et al. Nat Genet. 2003;34:154-156.
SOURCE Amgen Canada