Atsushi Hirayama1, Shizuya Yamashita2,3, Hyoe Inomata4, Helina Kassahun5, Marcoli Cyrille5, Andrea Ruzza5, Masayuki Yoshida6, Arihiro Kiyosue7, Yuhui Ma5, Tamio Teramoto8. 1. Division of Cardiology, Department of Medicine, Nihon University School of Medicine. 2. Departments of Community Medicine and Cardiovascular Medicine, Osaka University Graduate School of Medicine. 3. Rinku General Medical Center. 4. Amgen Astellas BioPharma K.K. 5. Amgen Inc. 6. Life Science and Bioethics Research Center, Tokyo Medical and Dental University. 7. Department of Cardiovascular Medicine, The University of Tokyo Hospital. 8. Teikyo Academic Research Center, Teikyo University.
Abstract
BACKGROUND:Evolocumab, a fully human monoclonal antibody against PCSK9, significantly reduced low-density lipoprotein-cholesterol (LDL-C) levels in Japanese patients by up to 76% when administered with a statin. We evaluated the efficacy and safety of 1 year of evolocumab in a pooled analysis of patients from the 12-week YUKAWA studies who continued into the open-label extension (OLE) OSLER studies.Methods and Results: YUKAWA-1 and YUKAWA-2 were conducted in hypercholesterolemic, high-cardiovascular-risk Japanese patients who were receiving statin therapy. Patients completing these studies were eligible for an OLE study. At OLE entry, patients were re-randomized 2:1 to evolocumab+standard of care (SOC) or SOC alone (OSLER-1: evolocumab 420 mg monthly; OSLER-2: evolocumab 140 mg biweekly or 420 mg monthly). A 1-year analysis was performed on patients enrolled from the YUKAWA studies into OSLER. At parent-study baseline (YUKAWA-1 or YUKAWA-2 patients continuing into OSLER), mean (SD) age was 61 (10) years; 39% were female; mean (SD) baseline LDL-C (on statin) was 119.7 (33.0) mg/dL. Overall rates of adverse events were comparable between evolocumab+SOC and SOC alone. In YUKAWA patients receiving evolocumab+SOC, mean (SE) reductions in LDL-C from parent-study baseline to OLE 1 year were 69.1% (1.2%; OSLER-1) and 65.1% (2.2%; OSLER-2). CONCLUSIONS: In a pooled 1-year analysis of Japanese patients in the ongoing OSLER studies, treatment with evolocumab+SOC was well tolerated and resulted in sustained LDL-C reductions at 1 year.
RCT Entities:
BACKGROUND:Evolocumab, a fully human monoclonal antibody against PCSK9, significantly reduced low-density lipoprotein-cholesterol (LDL-C) levels in Japanese patients by up to 76% when administered with a statin. We evaluated the efficacy and safety of 1 year of evolocumab in a pooled analysis of patients from the 12-week YUKAWA studies who continued into the open-label extension (OLE) OSLER studies.Methods and Results: YUKAWA-1 and YUKAWA-2 were conducted in hypercholesterolemic, high-cardiovascular-risk Japanese patients who were receiving statin therapy. Patients completing these studies were eligible for an OLE study. At OLE entry, patients were re-randomized 2:1 to evolocumab+standard of care (SOC) or SOC alone (OSLER-1: evolocumab 420 mg monthly; OSLER-2: evolocumab 140 mg biweekly or 420 mg monthly). A 1-year analysis was performed on patients enrolled from the YUKAWA studies into OSLER. At parent-study baseline (YUKAWA-1 or YUKAWA-2 patients continuing into OSLER), mean (SD) age was 61 (10) years; 39% were female; mean (SD) baseline LDL-C (on statin) was 119.7 (33.0) mg/dL. Overall rates of adverse events were comparable between evolocumab+SOC and SOC alone. In YUKAWA patients receiving evolocumab+SOC, mean (SE) reductions in LDL-C from parent-study baseline to OLE 1 year were 69.1% (1.2%; OSLER-1) and 65.1% (2.2%; OSLER-2). CONCLUSIONS: In a pooled 1-year analysis of Japanese patients in the ongoing OSLER studies, treatment with evolocumab+SOC was well tolerated and resulted in sustained LDL-C reductions at 1 year.