Lowering LDL-C below recommended thresholds is a key therapeutic target in the prevention of ASCVD [
20]. However, many patients do not reach recommended values of LDL-C despite taking one or more lipids lowering drugs [
12]. In high-risk patients, starting a statin therapy is strongly recommended but, in cases where statins fail to meet LDL-C goals, it is not clear what is the next best therapeutic option to further improve LDL-C control. In this scenario the new non-statin lipid lowering drugs can represent an alternative strategy for the physicians for optimizing LDL-C beyond statin titration till maximal tolerated dose. In the present study we found that the addition of bempedoic acid to patients already taking a combined therapy of high-intensity statin plus ezetimibe, was more effective than doubling the statin dose, in lowering LDL-C values. In particular, we observed a 22.9% reduction of LDL-C in the BA group versus a 7.5% reduction in the ST group. We believe that this is an original result for two reasons. Firstly, we did not find, in the literature, previous studies comparing bempedoic acid versus statin titration; secondly, to our knowledge, this is the first study in which bempedoic acid has been administered to patients already taking statin plus ezetimibe. The LDL-C lowering effect of bempedoic acid oscillates between 15 and 25% in relation to different clinical scenarios and background therapies. Our result completely agrees with previous studies in which bempedoic acid has been added to ezetimibe or used in monotherapy in patients with hypercholesterolemia and statin intolerance [
21,
22]. Conversely the LDL-C lowering effect that we observed in the BA group was greater when compared to the 15-18% reductions described in other studies performed in patients with already established ASCVD, or with multiple CV risk factors, and in which bempedoic acid has been added to statin therapy [
23,
24]. A possible explanation of the differences between our results and these two latter studies is that the doses of statins they used were higher than in our study. This is because in those studies bempedoic acid or placebo were added to maximally tolerated doses of statins; on the contrary the statin doses taken by our patients were low and still not optimized. Besides, other differences should be underlined: in the study of Goldberg et al. [
24] for example, only a small proportion of patients were taking ezetimibe in association to statins and some patients were taking proprotein convertase subtilisin/kexin type 9 inhibitors. Regarding the 7.5% reduction of LDL-C that we observed in the ST group by doubling the dose of statin, this result appears to be also in line with previous literature: despite different statins have varying abilities to lower LDL-C, it has been estimated that, on average, doubling the dose of a statin results in an approximate 6% further decrease in LDL-C levels [
25]. Interestingly, in this study, the greater reduction in LDL-C observed in the BA group resulted in a significantly higher percentage of patients of this group reaching the therapeutic target at 12 weeks in comparison to the ST group. This result suggests that starting bempedoic acid rather than titrating the statin dose would allow a quicker achievement of optimal values of LDL-C. Further studies are needed to clarify whether the observed differences persist over time and whether the triple strategy is associated with prognostic advantages in comparison to statin titration. Potential prognostic benefits of bempedoic acid in primary prevention have been suggested by a subgroup analysis of CLEAR Outcomes, in which a relative risk reduction of 39% and 27% for cardiovascular and all-cause mortality, respectively has been demonstrated [
17]. Moreover, the prognostic impact of a triple therapy including of bempedoic acid, ezetimibe and maximally tolerated statins, have been recently explored: McQueen et al. [
26], by using a simulation model, calculated that adding bempedoic acid plus ezetimibe in patients already on maximally tolerated statins and not at their LDL-C goal, would result in more major cardiovascular events avoided compared with the addition of ezetimibe alone. Overall, our results suggest that a “triple therapy” strategy, including bempedopic acid, statin and ezetimibe, could be the most effective for magnifying the LDL-C lowering effects in high-risk patients. A similar evidence emerges from the study of Ballantyne et al. [
27], also conducted in a high risk population. In that study the addition of bempedoic acid to statin led to a 17.2% reduction of LDL-C, while the addition of bempedoic acid plus ezetimibe to statin obtained a 34% LDL-C reduction. In our study the addition of bempedoic acid was well tolerated when added to background of statin plus ezetimibe. These safety and tolerability findings were consistent with expectations based on previous bempedoic acid clinical trials [
28,
29]. However, this result should be taken with caution since the follow up period of the present study was very short and data regarding side effects, in the literature, are not univocal. For example, Ray et al. [
23] observed that the incidence of adverse events leading to discontinuation of the drug was higher in the bempedoic acid group than in the placebo group. Further research including larger sample size, as well as the inclusion of a placebo group, are needed in order to confirm and expand our results. Limitations. The present study lacks a control group and this clearly weakens the robustness of our results. In this study we enrolled patients at high CV taking low doses of statins and ezetimibe; therefore, we cannot extend our results to patients at very high-risk taking high doses statins or to patient taking statins in combination with lipid lowering drugs other than ezetimibe. Despite this study was open to patients at high CV risk under 50 years, we encountered many difficulties in finding patients under 50 years who met the inclusion criterion of taking the combined treatment statin plus ezetimibe. Therefore. this group of age was underrepresented in this study and or results cannot be generalized to this group.