Importance of proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitors in the treatment of dyslipidemia and atherosclerosis

2019 ◽  
pp. 40-52
Author(s):  
Maksim Maksimov ◽  
Anastasia Shikaleva ◽  
Aleksandra Kuchaeva

Representatives of different groups of lipid-lowering drugs may have some differences in the nature and severity of the effect on the blood lipid spectrum. A new class of drugs, PCSK9 inhibitors, whose activity is associated with a protein involved in the control of low density lipoprotein receptors, has recently appeared. In clinical practice, this group is represented by monoclonal antibody preparations evolocumab and alirocumab. PCSK9 inhibitors are promising drugs for use in combination lipid-lowering therapy, which so far, given the results of clinical studies, can be recommended in the third place after statins and ezetimibe. In clinical studies, it was shown that alirocoumab and evolocumab alone or in combination with statins and/or other lipid-lowering drugs significantly reduce cholesterol levels in low density lipoproteins – by an average of 60%, depending on the dose.

2021 ◽  
Vol 12 (3) ◽  
pp. 517-521
Author(s):  
Jorge Andrés Ojeda Villota ◽  
Javier Alfredo Pérez Martínez ◽  
Luis Alberto Burgos de Moya ◽  
Rodrigo Alfonso Chavez Vega ◽  
Roxana Rivera Valencia ◽  
...  

Hypercholesterolemia (CH) is defined as the elevation of serum cholesterol levels, especially low-density lipoprotein (LDL) cholesterol, which is considered to be one of the most relevant risk factors for triggering cardiovascular disease, for This is vitally important to start treatment, there are several highly useful pharmacological groups for lipid-lowering therapy, among them we highlight the PCSK9 inhibitors, among the molecules that are part of this group we find inclisirán, this being a structure that promises a lot in regarding the management of hypercholesterolemia.


2021 ◽  
pp. 12-18
Author(s):  
A. A. Shikaleva ◽  
M. L. Maximov ◽  
N. M. Kiseleva

Dyslipidemia makes a substantial contribution to the mortality as one of the leading pathogenetic factors for cardiovascular diseases. The nature and degree of the effect on the blood lipid spectrum may vary in the lipid-lowering drugs from different groups. Recently, a new class of PCSK9 inhibitors has been developed, which activity is associated with a protein involved in the low-density lipoprotein receptor control. In clinical practice, this group is represented by monoclonal antibody drugs evolocumab and alirocumab. The proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitors are promising drugs to be used in the combination lipid-lowering therapy, which, given the results of clinical trials, can be recommended at this point on a third-priority basis after statins and ezetimibe. However, it is vital to indicate that these drugs have a sufficient safety profile, which makes it possible to prescribe these drugs in a triple combination adding it to the two first-line drugs regimen which patients had been given before. It is obvious that further study of PCSK9 will expand the range of their use for the treatment of familial hypercholesterolemia up to indications in cases where statins are limited and a more pronounced lipid-lowering effect is required to achieve target cholesterol levels.


Author(s):  
Elias J. Dayoub ◽  
Lauren A. Eberly ◽  
Ashwin S. Nathan ◽  
Sameed Ahmed M. Khatana ◽  
Srinath Adusumalli ◽  
...  

Background PCSK9 (proprotein convertase subtilisin/kexin type 9) inhibitors represent a promising class of lipid‐lowering therapy, although their use has been limited by cost concerns. Methods and Results A retrospective cohort study was conducted using a nationwide commercial claims database comprising patients with atherosclerotic cardiovascular disease (ASCVD), aged 18 to 64 years. We identified the number of patients with ASCVD started on a PCSK9 inhibitor from the dates of US Food and Drug Administration approval in quarter 3 2015 through quarter 2 2019. Secondary objectives identified the proportions of patients started on a PCSK9 inhibitor in various ASCVD risk groups based on statin use and baseline low‐density lipoprotein cholesterol. We identified 126 419 patients with ASCVD on either PCSK9 inhibitor or statin therapy. Among these patients, 1168 (0.9%) filled a prescription for a PCSK9 inhibitor. The number of patients initiating a PCSK9 inhibitor increased from 2 patients in quarter 3 2015 to 119 patients in quarter 2 2019, corresponding to an increase from 0.05% to 2.5% of patients with ASCVD already on statins who started PCSK9 inhibitor therapy. Of patients with ASCVD with high adherence to a high‐intensity statin, 13 643 had low‐density lipoprotein cholesterol ≥70 mg/dL, and in this subgroup, 119 (0.9%) patients initiated a PCSK9 inhibitor. Conclusions Few patients started PCSK9 inhibitors from 2015 through mid‐2019, despite increasing trial evidence of efficacy, guidelines recommending PCSK9 inhibitors in high‐risk patients with ASCVD, and price reductions during this period. The magnitude of price reductions may not yet be sufficient to influence use management strategies aimed to limit PCSK9 inhibitor use.


2021 ◽  
Vol 8 ◽  
Author(s):  
Jiao Gong ◽  
Yaqiong Chen ◽  
Yusheng Jie ◽  
Mingkai Tan ◽  
Zhaofang Jiang ◽  
...  

Low-density lipoprotein cholesterol (LDL-C) is a well-known risk factor for coronary heart disease but protects against infection and sepsis. We aimed to disclose the exact association between LDL-C and severe 2019 novel coronavirus disease (COVID-19). Baseline data were retrospectively collected for 601 non-severe COVID-19 patients from two centers in Guangzhou and one center in Shenzhen, and patients on admission were medically observed for at least 15 days to determine the final outcome, including the non-severe group (n = 460) and the severe group (severe and critical cases) (n = 141). Among 601 cases, 76 (12.65%) received lipid-lowering therapy; the proportion of patients taking lipid-lowering drugs in the severe group was higher than that in the non-severe group (22.7 vs. 9.6%). We found a U-shaped association between LDL-C level and risk of severe COVID-19 using restricted cubic splines. Using univariate logistic regression analysis, odds ratios for severe COVID-19 for patients with LDL-C ≤1.6 mmol/L (61.9 mg/dL) and above 3.4 mmol/L (131.4 mg/dL) were 2.29 (95% confidence interval 1.12–4.68; p = 0.023) and 2.02 (1.04–3.94; p = 0.039), respectively, compared to those with LDL-C of 2.81–3.40 mmol/L (108.6–131.4 mg/dL); following multifactorial adjustment, odds ratios were 2.61 (1.07–6.37; p = 0.035) and 2.36 (1.09–5.14; p = 0.030). Similar results were yielded using 0.3 and 0.5 mmol/L categories of LDL-C and sensitivity analyses. Both low and high LDL-C levels were significantly associated with higher risk of severe COVID-19. Although our findings do not necessarily imply causality, they suggest that clinicians should pay more attention to lipid-lowering therapy in COVID-19 patients to improve clinical prognosis.


2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
P Penson ◽  
S.S Martin ◽  
N.C Henney ◽  
M Banach

Abstract Background Low-density lipoprotein cholesterol (LDL-C) is an established risk factor for cardiovascular disease (CVD), and a target for lipid-lowering therapy. LDL-C is typically not measured directly but is estimated using the Friedewald formula, which assumes a fixed factor for the ratio of triglycerides (TG) to very low-density lipoprotein cholesterol (VLDL-C). However this assumption is sometimes not valid. The Martin/Hopkins (M/H) formula estimates LDL-C using an adjustable factor for the TG:VLDL-C ratio and is expected to improve upon Friedewald when predicting measured LDL-C, and apolipoprotein B (ApoB), one molecule of which is associated with each LDL particle. Purpose We compared values of LDL-C calculated by the Friedewald and M/H methods with respect to their correlation with non-high density lipoprotein cholesterol (non-HDL-C) and ApoB, and their classification of individuals based upon attainment of the threshold value of 70 mg/dl (1.8 mmol/l) of LDL-C. This cut-point is a treatment target for individuals at high risk of CVD in the 2019 ESC guidelines for lipid modification, and a threshold for initiating statin therapy in the 2019 ACC/AHA guidelines. Methods In this analysis we included participants in the National Health and Nutrition Examination Survey (NHANES) from 2005–2016, age ≥18, <80 years who had measurements for total cholesterol (TC), TG and HDL-C. LDL-C was calculated using Friedewald and M/H. We correlated LDL-C (calculated using the two methods) with non-HDL-C and ApoB. We identified individuals with LDL-C <70 mg/dl using both methods. When LDL-C (Friedewald) was <70, but LDL-C (M/H) was >70, we classified these participants as discordant. Statistical analyses were performed in IBM SPSS for Windows v26. Results 12,243 individuals were included. 51.8% were female, mean (±SD) age was 45.5±17.4, 15.3% were treated with statins, ApoB was available for 2179 participants. Mean lipid concentrations (mg/dl) were: TC: 191.5±41.0, TG: 120.0±67.0, HDL-C: 54.1±15.7, LDL-C (Friedewald): 113.3±35.4; LDL-C (M/H): 114.9±35.2. In the whole population, LDL-C (M/H) was more strongly correlated than LDL-C (Friedewald) with ApoB (r=0.935 v 0.894) and non-HDL-C (r=0.981 v 0.944). In statin-treated participants, LDL-C (M/H) was also more strongly correlated with ApoB (r=0.951 v 0.914) and non-HDL-C (r=0.979 v 0.928). 1139 participants had LDL-C (Friedewald) <70 mg/dl. Of these, 206 individuals (18.1%) were discordant, having LDL-C (M/H) >70 mg/dl. Amongst statin-treated patients, 22.9% were discordant. Only 5.5% of individuals with LDL-C (M/H) <70 mg/dl showed reverse discordance (LDL-C (Friedewald) >70 mg/dl). Conclusions The M/H method of calculating LDL-C correlates more strongly with non-HDL-C and ApoB than Friedewald. Importantly the discordant results confirm previous observations that Friedewald underestimates LDL-C at low concentrations. This may result in under-use of lipid-lowering therapies. Funding Acknowledgement Type of funding source: None


2020 ◽  
Vol 41 (40) ◽  
pp. 3900-3909 ◽  
Author(s):  
Ali Allahyari ◽  
Tomas Jernberg ◽  
Emil Hagström ◽  
Margrét Leosdottir ◽  
Pia Lundman ◽  
...  

Abstract Aims To estimate the proportion of patients with a recent myocardial infarction (MI) who would be eligible for additional lipid-lowering therapy according to the 2019 European Society of Cardiology (ESC)/European Atherosclerosis Society (EAS) guidelines for the management of dyslipidaemias, and to simulate the effects of expanded lipid-lowering therapy on attainment of the low-density lipoprotein cholesterol (LDL-C) target as recommended by the guidelines. Methods and results Using the nationwide SWEDEHEART register, we included 25 466 patients who had attended a follow-up visit 6–10 weeks after an MI event, 2013–17. While most patients (86.6%) were receiving high-intensity statins, 82.9% of the patients would be eligible for expanded lipid-lowering therapy, as they had not attained the target of an LDL-C level of <1.4 mmol and a ≥50% LDL-C level reduction. When maximized use of high-intensity statins followed by add-on therapy with ezetimibe was simulated using a Monte Carlo model, the LDL-C target was reached in 19.9% using high-intensity statin monotherapy and in another 28.5% with high-intensity statins and ezetimibe, while 50.7% would still be eligible for proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitors. When use of alirocumab or evolocumab was simulated in those who were eligible for PCSK9 inhibitors, around 90% of all patients attained the LDL-C target. Conclusion  Our study suggests that, even with maximized use of high-intensity statins and ezetimibe, around half of patients with MI would be eligible for treatment with PCSK9 inhibitors according to the 2019 ESC/EAS guidelines. Considering the current cost of PCSK9 inhibitors, the financial implications of the new guidelines may be substantial.


2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Hyoeun Kim ◽  
Chan Joo Lee ◽  
Hayeon Pak ◽  
Doo-Il Kim ◽  
Moo-Yong Rhee ◽  
...  

Abstract Among the 146 patients enrolled in the Korean FH registry, 83 patients who had undergone appropriate LLT escalation and were followed-up for ≥ 6 months were analyzed for pathogenic variants (PVs). The achieved percentage of expected low-density lipoprotein-cholesterol (LDL-C) reduction (primary variable) and achievement rates of LDL-C < 70 mg/dL were assessed. The correlations between the treatment response and the characteristics of PVs, and the weighted 4 SNP-based score were evaluated. The primary variables were significantly lower in the PV-positive patients than in the PV-negative patients (p = 0.007). However, the type of PV did not significantly correlate with the primary variable. The achievement rates of LDL-C < 70 mg/dL was very low, regardless of the PV characteristics. Patients with a higher 4-SNP score showed a lower primary variable (R2 = 0.045, p = 0.048). Among evolocumab users, PV-negative patients or those with only defective PVs revealed higher primary variable, whereas patients with at least one null PV showed lower primary variables. The adjusted response of patients with FH to LLT showed significant associations with PV positivity and 4-SNP score. These results may be helpful in managing FH patients with diverse genetic backgrounds.


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