Asia-Pacific Real-World Evolocumab Use, LDL-C Reduction, Physician Goals, and Patient Perceptions: HALES Observational Study

Abstract

Introduction: Real-world data are needed to understand the effectiveness of new therapeutic options for low-density lipoprotein cholesterol (LDL-C) reduction in Asia-Pacific clinical practice. Description of evolocumab use among adults with establisHed Atherosclerotic cardiovascuLar diseasE or hypercholesterolemia in ASia-Pacific region (HALES) was performed to better understand characteristics of and clinical decision-making for adults with established atherosclerotic cardiovascular disease/hypercholesterolemia after local evolocumab approval.

Methods: The HALES observational study, conducted at 33 sites (Hong Kong, Thailand, South Korea, Singapore, Taiwan, and Australia) comprised (1) chart review of patients who received evolocumab, a proprotein convertase subtilisin/kexin type 9 inhibitor (PCSK9i), and (2) physician/patient survey and one-time data collection of patients with high cardiovascular risk initiating evolocumab or initiating/continuing non-PCSK9i lipid-lowering therapy. Patients could only enroll in (1) or (2).

Results: Chart review included 724 very high-risk patients initiating evolocumab from regulatory approval to 2021. From median baseline LDL-C of 3.2 mmol/L (123.7 mg/dL), patients had a median percent change in LDL-C of - 60.8% at 1-6 months. Goal achievement increased from 7.9% to 69.8% for < 1.8 mmol/L (< 70 mg/dL) and 4.4% to 57.8% for < 1.4 mmol/L (< 55 mg/dL) from baseline to 12 months. In the one-time data collection, more patients had ≥ 1.8 mmol/L (≥ 70 mg/dL) baseline LDL-C in the evolocumab vs non-PCSK9i group (95.2% and 48.5%, respectively). Surveys found that physicians applied guideline-recommended treatment targets, and patients demonstrated gaps in understanding cardiovascular risk.

Conclusion: Real-world, Asia-Pacific data showed that LDL-C reduction after initiating evolocumab was consistent with that observed in other clinical trials and patient populations. Graphical abstract available for this article.·.