Abstract
BACKGROUND: Despite the widespread use of statins, approximately 40% to 50% of Canadian patients with known cardiovascular disease do not achieve the low-density lipoprotein cholesterol (LDL-C) goal. Guidelines Oriented Approach to Lipid lowering (GOAL) is an investigator-initiated study aiming to ascertain the use of second- and third-line therapy and its impact on LDL-C goal achievement in a real-world setting. METHODS: GOAL enrolled patients with clinical vascular disease or familial hypercholesterolemia and LDL-C > 2.0 mmol/L despite maximally tolerated statin therapy. During follow-up, physicians managed patients as clinically indicated but with online reminders of guideline recommendations. RESULTS: Of 2009 patients enrolled (median age 63 years, 42% were female), baseline total cholesterol was 5.5 ± 1.4 mmol/L, LDL-C was 3.3 ± 1.3 mmol/L, non-high-density lipoprotein cholesterol was 4.1 ± 1.4 mmol/L, high-density lipoprotein cholesterol was 1.3 ± 0.4 mmol/L, and triglycerides were 2.0 ± 1.5 mmol/L. Lipid-lowering therapy used at baseline was statin therapy in 76% (with 24% statin intolerant) and ezetimibe in 25%. During follow-up, the proportion of patients achieving an LDL-C level of < 2.0 mmol/L increased significantly to 50.8% as a result of additional lipid-lowering therapy. Patients achieving the recommended LDL-C level were more likely to not be statin intolerant (83.8% vs 70.7%, P < 0.0001) and to be taking a high-efficacy type and dose of statin (52.4% vs 35.9%, P < 0.0001). The 3 top reasons for not using the recommended therapy with ezetimibe were patient refusal in 33%, not needed in 22%, and intolerance in 20%, whereas for PCSK9i the reasons were cost in 26%, not needed in 27%, or patient refusal in 25%. CONCLUSION: The results indicate the feasibility of optimizing management, resulting in achievement of the guideline-recommended LDL-C level. This has the potential to translate into reductions in cardiovascular morbidity and mortality of Canadian patients.