PCSK9 Inhibitors in Real-world Practice: Analysis of Data from 314 Patients and 2 Years of Experience in a Center of Preventive Cardiology

Trends in dyslipidemia prevalence among Uyghur adults of different genders in China: a retrospective cohort study

Background

To analyze the prevalence and epidemiological characteristics of dyslipidemia among adults of different genders in Xinjiang, China, providing a basis for promoting ideal lipid management among the Uyghur population.

Methods

In this retrospective study, we included 7,646 Uyghur adults from the 2021 physical examination data in Hotan, Xinjiang, and followed up with all participants in 2023 for analysis. Participants completed lifestyle and medical history questionnaires and underwent lipid profiling. Dyslipidemia was defined according to the 2023 Chinese guidelines for lipid management. Group differences were analyzed using t-tests, ANOVA, and chi-square tests, the trend test for ordered categorical variables was conducted using univariate linear regression, and multivariable logistic regression was performed to explore risk factors for dyslipidemia.

Results

In 2023, the average levels of waist circumference, fasting glucose, total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), and non-HDL-C among Uyghur men and women, as well as the prevalence of diabetes, increased compared to 2021, with significant statistical differences within the same gender groups (P < 0.001). The primary types of dyslipidemia among Uyghur adults were low HDL-C. After age and gender standardization, the overall standardized prevalence of high low-density lipoprotein cholesterol (LDL-C), hypertriglyceridemia, and low HDL-C showed a downward trend, with a more pronounced decrease among men. The prevalence of hypercholesterolemia and high non-HDL-C increased from 2021, with a greater increase among women. In 2023, the standardized prevalence rates of hypercholesterolemia, high LDL-C, low HDL-C, hypertriglyceridemia, and high non-HDL-C were higher in women than in men. Multivariable logistic regression adjusted for multiple factors indicated that higher educational attainment (OR 1.992; 95% CI [1.042-3.808]; P = 0.037), overweight (OR 1.303; 95% CI [1.085-1.566]; P = 0.005), obesity (OR 1.520; 95% CI [1.226-1.886]; P = 0.000), and central obesity (OR 1.013; 95% CI [1.006-1.021]; P = 0.001) were associated with dyslipidemia in Uyghur men, while in Uyghur women, dyslipidemia prevalence was mainly related to obesity (OR 1.549; 95% CI [1.261-1.902]; P = 0.000) and central obesity (OR 1.009; 95% CI [1.002-1.016]; P = 0.01).

Conclusion

The primary forms of dyslipidemia among Uyghur adults include low HDL-C levels. The prevalence of high LDL-C, hypertriglyceridemia, and low HDL-C is showing a declining trend, particularly among men. In contrast, the prevalence of hypercholesterolemia and high non-HDL-C is increasing more significantly among women. In men, risk factors for dyslipidemia include higher educational attainment, being overweight, obesity, and central obesity. In women, the prevalence of dyslipidemia is mainly associated with obesity and central obesity.

PCSK9 inhibitor experiences and preferences of patients and healthcare professionals in decision-making: A mixed methods study

BACKGROUND AND AIMS

This study investigated how patients experience and which outcomes matter to patients and healthcare professionals in the decision to initiate proprotein convertase subtilisin/kexin type 9 inhibitors (PCSK9i) as add-on lipid-lowering treatment (LLT).

METHODS

We performed a mixed methods study: very high-risk patients qualifying for PCSK9i reimbursement were interviewed about their experiences and preferences. Subsequently, patients using PCSK9i completed an anonymous online survey about their experiences. Additionally, healthcare professionals (HCPs) filled in an online survey about their PCSK9i prescription preferences and perceived patient preferences.

RESULTS

We interviewed 25 patients (median [IQR] age 58 [48-65] years, 56 % women, 64 % established cardiovascular disease) at different decision-making stages. The majority (72 %) chose efficacy over side-effects (16 %) and ease of use (12 %) as most important attribute of add-on LLT. Most patients (72 %) prefer shared decision-making. Subsequently, 170 patients using PCSK9i completed a survey (age 64 [56-69], 44 % women, 63 % established cardiovascular disease). Here again, the most important attribute (83 %) in deciding on add-on LLT was efficacy. Almost all (90 %) patients favoured shared decision-making. Of the 59 HCPs (age 44 [40-50], 49 % women, 78 % medical specialist), only 27 % indicated to consider patient preferences when selecting the PCSK9i type. HCPs identified patient characteristics influencing their PCSK9i prescription preferences.

CONCLUSIONS

For patients and HCPs, efficacy was the most important aspect in choosing a PCSK9i. Even though shared decision-making is recommended by the guidelines and preferred by patients, in clinical practice only a minority of the HCPs apply this. To facilitate shared decision-making, future research should investigate the development and impact of a decision aid for patients.

Efficacy and safety of PCSK9 inhibitors in real life

OBJECTIVE

To confirm the effectiveness and safety of proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitors in daily clinical practice.

METHODS

Retrospective observational study of patients from hospital registry of PCSK9 inhibitor treatment with a follow-up ≥ 6 months. The lipid-lowering effect and safety were evaluated.

RESULTS

Of the 193 patients included in the study, 168 (87%) had cardiovascular disease, and 54 (28%) had familial hypercholesterolemia; 85 (44%) were intolerant to statins/ezetimibe. No differences between alirocumab and evolocumab groups regarding the rate of LDL-C reduction ≥ 50% (82.8% vs. 83.1%), achievement of the therapeutic target (60.9% vs. 65.5%), or complete remission (60.2% vs. 58.5%) were found. An erythema at the injection site in one patient treated with alirocumab and urticaria in one patient treated with evolocumab were recorded. According to the logistic regression analysis, complete remission of LDL-C in subjects treated with PCSK9 inhibitors was positively associated with increased age (OR: 1.045; 95%CI: 1.0-1.092; P=.049) and active smoking (OR: 4.562; 95%CI: 1.434-14.515; P=.010), and negatively associated with female gender (OR: 0.403; 95%CI: 0.171-0.949; P=.038), baseline LDL-C levels (OR: 0.969; 95%CI: 0.957-0.981; P<.001)and statin/ezetimibe intolerance (OR: 0.403; 95%CI: 0.176-0.925; P=.041).

CONCLUSION

This real-world practice study has confirmed that PCSK9 inhibitors are effective, safe and well tolerated, with lipid-lowering effects comparable to those described in randomized controlled trials, regardless of the monoclonal antibody used.

Real-World Application of Evolocumab Among Patients with Hyperlipidemia in Korea: A Multicenter Prospective Study

INTRODUCTION

Elevated low-density lipoprotein cholesterol (LDL-C) is a major residual risk factor among patients with acute coronary syndrome (ACS). In the absence of sufficient real-world evidence, this observational (noninterventional) study investigated the effectiveness and safety of evolocumab in patients with hyperlipidemia treated with evolocumab for ACS in a real-world clinical setting in Korea.

METHODS

Between January 2022 and February 2023, patients from 10 hospitals in Korea who initiated evolocumab within 24 weeks of an ACS event were enrolled. Data collected at visit 1 (evolocumab initiation) included patients' characteristics, comorbidities, and lipid-lowering therapies. LDL-C reduction from visit 1 (week 0) to visit 2 (week 8) was assessed. The primary outcome was the proportion of patients who achieved LDL-C < 1.4 mmol/L (55 mg/dL) at follow-up; the secondary outcome was the proportion who achieved LDL-C < 1.8 mmol/L (70 mg/dL) at follow-up.

RESULTS

In this study, 89 out of 142 enrolled patients were included in the effectiveness analysis. The mean (SD) age of the included patients was 59.3 (12.3) years, with the majority being male (87.6%). Sixty-one patients received statin-ezetimibe combination therapy (68.5%). The median [Q1, Q3] LDL-C level at the start of the study was 2.5 [2.0, 3.0] mmol/L (98 [77, 115] mg/dL), which decreased to 1.3 [0.7, 1.7] mmol/L (49 [29, 67] mg/dL) after 8 weeks of evolocumab treatment, resulting in an mean (SD) 50.9 (28.6) % reduction and 1.4 (1.0) mmol/L (55.1 (37.9) mg/dL) absolute reduction. At follow-up, 55.1% and 78.7% of patients achieved LDL-C goals of < 1.4 mmol/L (55 mg/dL) and < 1.8 mmol/L (70 mg/dL), respectively. No adverse or serious adverse drug reactions were reported.

CONCLUSION

Evolocumab treatment was associated with significant LDL-C lowering and favorable safety and guideline-recommended LDL-C goal achievement rates among patients with ACS in the real-world clinical practice setting in South Korea.

Circulating Endothelial Progenitor Cells in Patients with Established Cardiovascular Disease Treated with PCSK9 Monoclonal Antibodies

Background

The role of circulating endothelial progenitor cells (cEPCs) in vascular repair and their association to cardiovascular protection is well established.

Objectives

We examined the effect of proprotein convertase subtilisin kexin type 9 monoclonal antibodies (PCSK9 mAb) on cEPCs in adults with hypercholesterolemia and cardiovascular disease, aiming to establish a pleotropic class effect.

Methods

Non-interventional prospective study in patients with cardiovascular disease treated with either evolocumab or alirocumab. Patients were sampled for cEPCs at baseline, 1- and 3-months following initiation of PCSK9 mAb. cEPCs were assessed using flow cytometry by expression of CD34/CD133 and vascular endothelial growth factor receptor (VEGFR)-2, and functionally by formation of colony forming units (CFUs) and by Mitochondrial Tetrazolium (MTT) assay, indicative of cEPCs viability.

Results

51 patients (median age 67 (IQR 63,74) years;63 % male, median low-density lipoprotein-cholesterol (LDL-C) 125 (102,165) mg/dL) were initiated on PCSK9 mAb therapy (evolocumab n = 22, alirocumab n = 29) for secondary prevention. Following 3-month treatment with PCSK9 mAb, there was an increase in CD34(+)VEGFR-2(+) and CD133(+)VEGFR-2(+) levels (0.50 % [IQR 0.30,1.04] to 1.36 % [0.89, 1.73], p < 0.001 and 0.57 % [0.25,0.88] to 1.18 % [0.74,1.66], p < 0.001, respectively). Functionally, increase in EPCs-CFUs was evident (0.5 [0.0,1.0] to 2.0 [1.5,2.5], p < 0.001) with concomitant increase in MTT (0.11 [0.09,0.15] to 0.17 [0.12,0.21], p < 0.001). Stratifying by PCSK9 mAb, both agents were associated with an increase in cEPCs level and function.

Conclusions

In hypercholesterolemic patients with cardiovascular disease treated with PCSK9 mAb, there is an increase in cEPCs levels and function from baseline levels. These findings, which persist in both evolocumab and alirocumab, might suggest a novel pleiotropic class effect.

Safety of Inclisiran: A Disproportionality Analysis from the EudraVigilance Database

Introduction: The discovery of serine protease proprotein convertase subtilisin-kexin type 9 (PCSK9) has revolutionized pharmacological lipid-lowering treatments. The first PCSK9 antagonists (PCSK9-A), evolocumab and alirocumab, were approved in 2015. Targeting PCSK9 synthesis marked a major advancement in this field, leading to the development of inclisiran, a long-acting siRNA targeting PCSK9 mRNA. However, real-world safety data on this drug are still limited. Therefore, this study aims to provide a real-world safety evaluation of inclisiran, comparing its characteristics to those of PCSK9-As. Methods: A retrospective pharmacovigilance study was conducted using EudraVigilance (EV). Inclisiran-related individual case safety reports (I-ICSRs) from 01/01/2021 to 06/30/2023 were retrieved. ICSRs for evolocumab or alirocumab from 01/01/2015 to 06/30/2023 were collected as a reference group (RG). ADRs were classified using the MedDRA dictionary. Data were evaluated using descriptive and disproportionality analyses. Crude reporting odds ratio (ROR) with 95% confidence intervals (CI) were used as disproportionality measures. Results: Of the 15,236 ICSRs, 3.7% (n = 563) involved inclisiran, with the rest in the RG. Most I-ICSRs involved female patients (51.7%) aged 18 to 64 (52.8%). The most-reported ADRs for inclisiran were "general disorders and administration site conditions" (n = 347) and "investigations" (n = 277). Significant disproportionality was found in I-ICSRs compared to the RG for "Myalgia" (ROR: 2.43; 95% CI: 1.94-3.04), "Low-density lipoprotein increased" (ROR: 11.95; 95% CI: 9.10-15.52), and "Drug ineffective" (ROR: 6.37; 95% CI: 4.64-8.74). Conclusions: The inclisiran safety profile aligns with the existing literature and pre-commercial data. However, further studies are needed to fully understand the observed differences with PCSK9-As.

Monoclonal Anti-PCSK9 Antibodies: Real-World Data

Background: Real-world data on the use of lipid-lowering therapy (LLT) in clinical practice show that about 80% of (very) high-cardiovascular (CV)-risk patients disregard the 2019 European Society of Cardiology (ESC) Guidelines' recommendations on dyslipidemias. The availability of proprotein convertase subtilisin/kexin type 9 monoclonal antibodies (PCSK9mAb) should reduce this gap. Our aim was to provide data on PCSK9mAb use in clinical practice, investigating the achievement of the ESC Guidelines' recommendations in the real world. Methods: Between April 2018 and December 2022, patients who started on PCSK9mAb therapy (140 mg of evolocumab or 75 mg or 150 mg of alirocumab, subcutaneous injection every 2 weeks) were included in a prospective registry. Our cohort consisted of 256 patients: 95 (37.1%) were women (mean age: 65.43 ± 11.12 yrs), 53 (20.7%) were at high CV risk, and 203 (79.3%) were at very high CV risk. Results: After one year of PCSK9mAb treatment, nearly 60% of patients demonstrated full adherence to the ESC Guidelines' recommendations, defined as achieving at least a 50% reduction in low-density lipoprotein cholesterol (LDL-C) levels along with reaching LDL-C target levels (≤55 and ≤70 mg/dL for very high and high risk, respectively). Concomitant high-dose statin therapy emerged as the primary predictor of LDL-C target attainment. Heterozygous familial hypercholesterolemia (HeFH), statin intolerance, and female gender were associated with a significant lower probability of achieving LDL-C target levels. Conclusions: Our analysis confirms that PCSK9mAb treatment is safe and effective, enabling 60% of our cohort to fully achieve the LDL-C guideline recommendations. The use of high-intensity statins emerged as a significant predictor of efficacy. Conversely, familial hypercholesterolemia and female gender were identified as predictors of therapeutic failure. Hence, it is crucial to address disparities in cardiovascular disease prevention between genders and to enhance strategies for managing elevated LDL-C in HeFH patients.

PCSK9 inhibition: from effectiveness to cost-effectiveness

Dyslipidaemia is a complex disorder characterised by abnormal lipid levels in the blood, including cholesterol and triglycerides, and plays an important role in the development of atherosclerotic cardiovascular disease. Most risk factors for cardiovascular disease are modifiable, and dyslipidaemia is a key factor among them. It can result from a combination of genetic and environmental factors. A distinction is made between primary dyslipidaemia, which is mainly caused by inherited genetic changes, and secondary dyslipidaemia, which is due to underlying diseases or certain medications. The treatment of dyslipidaemia has evolved over the years. In the past, statins were the first choice, but newer drugs, such as proprotein convertase subtilisin-kexin type 9 (PCSK9) inhibitors, have gained prominence due to their effectiveness in lowering lipids. Although recent guidelines recommend PCSK9 inhibitors for high-risk patients and patients who cannot tolerate statins, their widespread use is limited because of cost. Several meta-analyses have confirmed the efficacy and safety of PCSK9 inhibitors and have shown a significant reduction in low-density lipoprotein (LDL) cholesterol levels. However, the long-term side effects and interactions with other risk factors for cardiovascular disease remain uncertain. In addition, cost-effectiveness analyses have shown mixed results, with some countries considering PCSK9 inhibitors to be cost-effective for certain patient groups, while others consider them less economical. Meanwhile, initial data from patients using PCSK9 inhibitors support the results of the clinical trials. To summarise, PCSK9 inhibitors represent a revolutionary solution for lowering LDL cholesterol, but their cost-effectiveness remains controversial. Despite the controversy, they offer clear benefits for high-risk patients and should therefore be considered in the treatment of dyslipidaemia.

High interindividual variability in LDL-cholesterol reductions after inclisiran administration in a real-world multicenter setting in Germany

BACKGROUND AND AIMS

Low-density lipoprotein cholesterol (LDL-C) is the main therapeutic target in the treatment of hypercholesterolemia. Small interfering RNA (siRNA) inclisiran is a new drug, which targets PCSK9 mRNA in the liver, reducing concentrations of circulating LDL-C. In randomized trials, inclisiran demonstrated a substantial reduction in LDL-C. The German Inclisiran Network (GIN) aims to evaluate LDL-C reductions in a real-world cohort of patients treated with inclisiran in Germany.

METHODS

Patients who received inclisiran in 14 lipid clinics in Germany for elevated LDL-C levels between February 2021 and July 2022 were included in this analysis. We described baseline characteristics, individual LDL-C changes (%) and side effects in 153 patients 3 months (n = 153) and 9 months (n = 79) after inclisiran administration.

RESULTS

Since all patients were referred to specialized lipid clinics, only one-third were on statin therapy due to statin intolerance. The median LDL-C reduction was 35.5% at 3 months and 26.5% at 9 months. In patients previously treated with PCSK9 antibody (PCSK9-mAb), LDL-C reductions were less effective than in PCSK9-mAb-naïve patients (23.6% vs. 41.1% at 3 months). Concomitant statin treatment was associated with more effective LDL-C lowering. There was a high interindividual variability in LDL-C changes from baseline. Altogether, inclisiran was well-tolerated, and side effects were rare (5.9%).

CONCLUSION

In this real-world patient population referred to German lipid clinics for elevated LDL-C levels, inclisiran demonstrated a high interindividual variability in LDL-C reductions. Further research is warranted to elucidate reasons for the interindividual variability in drug efficacy.

Beyond statins: New pharmacological targets to decrease LDL-cholesterol and cardiovascular events

The pharmacological treatment of dyslipidemia, a major modifiable risk factor for developing atherosclerotic cardiovascular disease (ASCVD), remains a debated and controversial issue, not only in terms of the most appropriate therapeutic range for lipid levels, but also with regard to the optimal strategy and sequence approach (stepwise vs upstream therapy). Current treatment guidelines for the management of dyslipidemia focus on the intensity of low-density lipoprotein cholesterol (LDL-C) reduction, stratified according to risk for developing ASCVD. Beyond statins and ezetimibe, different medications targeting LDL-C have been recently approved by regulatory agencies with potential innovative mechanisms of action, including proprotein convertase subtilisin/kexin type 9 modulators (monoclonal antibodies such as evolocumab and alirocumab; small interfering RNA molecules such as inclisiran), ATP-citrate lyase inhibitors (bempedoic acid), angiopoietin-like 3 inhibitors (evinacumab), and microsomal triglyceride transfer protein inhibitors (lomitapide). An understanding of their pharmacological aspects, benefit-risk profile, including impact on hard cardiovascular endpoints beyond LDL-C reduction, and potential advantages from the patient perspective (e.g., adherence) - the focus of this evidence-based review - is crucial for practitioners across medical specialties to minimize therapeutic inertia and support clinical practice.

Regional differences in physicians' behavior and factors influencing the intensity of PCSK9 inhibitor therapy with alirocumab: a subanalysis of the ODYSSEY APPRISE study

Background

Despite better accessibility of the effective lipid-lowering therapies, only about 20% of patients at very high cardiovascular risk achieve the low-density lipoprotein cholesterol (LDL-C) goals. There is a large disparity between European countries with worse results observed for the Central and Eastern Europe (CEE) patients. One of the main reasons for this ineffectiveness is therapeutic inertia related to the limited access to appropriate therapy and suitable dosage intensity. Thus, we aimed to compare the differences in physicians' therapeutic decisions on alirocumab dose selection, and factors affecting these in CEE countries vs. other countries included in the ODYSSEY APPRISE study.

Methods

ODYSSEY APPRISE was a prospective, single-arm, phase 3b open-label (≥12 weeks to ≤30 months) study with alirocumab. Patients received 75 or 150 mg of alirocumab every 2 weeks, with dose adjustment during the study based on physician's judgment. The CEE group in the study included Czechia, Greece, Hungary, Poland, Romania, Slovakia, and Slovenia, which we compared with the other nine European countries (Austria, Belgium, Denmark, Finland, France, Germany, Italy, Spain, and Switzerland) plus Canada.

Results

A total of 921 patients on alirocumab were involved [modified intention-to-treat (mITT) analysis], including 114 (12.4%) subjects from CEE countries. Therapy in CEE vs. other countries was numerically more frequently started with lower alirocumab dose (75 mg) at the first visit (74.6 vs. 68%, p = 0.16). Since week 36, the higher dose was predominantly used in CEE patients (150 mg dose in 51.6% patients), which was maintained by the end of the study. Altogether, alirocumab dose was significantly more often increased by CEE physicians (54.1 vs. 39.9%, p = 0.013). Therefore, more patients achieved LDL-C goal at the end of the study (<55 mg/dl/1.4 mmol/L and 50% reduction of LDL-C: 32.5% vs. 28.8%). The only factor significantly influencing the decision on dose of alirocumab was LDL-C level for both countries' groups (CEE: 199.2 vs. 175.3 mg/dl; p = 0.019; other: 205.9 vs. 171.6 mg/dl; p < 0.001, for 150 and 75 mg of alirocumab, respectively) which was also confirmed in multivariable analysis (OR = 1.10; 95% CI: 1.07-1.13).

Conclusions

Despite larger unmet needs and regional disparities in LDL-C targets achievement in CEE countries, more physicians in this region tend to use the higher dose of alirocumab, they are more prone to increase the dose, which is associated with a higher proportion of patients reaching LDL-C goals. The only factor that significantly influences decision whether to increase or decrease the dose of alirocumab is LDL-C level.

Efficacy, safety, adherence and persistence of PCSK9 inhibitors in clinical practice: A single country, multicenter, observational study (AT-TARGET-IT)

BACKGROUND AND AIMS

Proprotein Convertase Subtilisin/Kexin type 9 inhibitors (PCSK9i) are recommended in patients at high and very-high cardiovascular (CV) risk, with documented atherosclerotic CV disease (ASCVD), and for very-high risk patients with familial hypercholesterolaemia not achieving LDL-cholesterol (LDL-C) goal while receiving maximally tolerated dose of lipid-lowering therapy (LLT). However, single country real-life data, reporting the use of PCSK9i in clinical practice, are limited. Therefore, we designed AT-TARGET-IT, an Italian, multicenter, observational registry on the use of PCSK9i in clinical practice.

METHODS

All data were recorded at the time of the first prescription and at the latest observation preceding inclusion in the study.

RESULTS

798 patients were enrolled. The median reduction in LDL-C levels was 64.9%. After stratification for CV risk, 63.8% achieved LDL-C target; of them, 83.3% took LLTs at PCSK9i initiation and 16.7% did not. 760 patients (95.2%) showed high adherence to therapy, 13 (1.6%) partial adherence, and 25 (3.1%) poor adherence. At 6 months, 99.7% of patients enrolled in the study remained on therapy; there were 519 and 423 patients in the study with a follow-up of at least 12 and 18 months, respectively. Persistence in these groups was 98.1% and 97.5%, respectively. Overall, 3.5% of patients discontinued therapy. No differences in efficacy, adherence, and persistence were found between alirocumab and evolocumab.

CONCLUSIONS

PCSK9i are safe and effective in clinical practice, leading to very high adherence and persistence to therapy, and achievement of recommended LDL-C target in most patients, especially when used as combination therapy.

Dyslipidemia - the known unknown

Dyslipidemia (DLP) is the most important risk factor for atherosclerotic cardiovascular disease (ASCVD) and, in the context of severe hypertriglyceridemia (TG > 10 mmol/l), a risk factor for the development of acute pancreatitis. The prevalence of DLP is very high, but their control, especially among the patients at highest risk, is often inadequate. When diagnosing DLP, we should always exclude its possible secondary aetiology (e.g. DLP in the context of hypothyroidism, diabetes, ...). Based on the assessment of the overall CV risk (according to SCORE2/SCORE2-OP or according to the comorbidities of the individual), target values for blood lipids, especially LDL-cholesterol, are determined according to the risk category. The basis of the management of DLP in the prevention of ASCVD is dietary and regimen measures, followed by adequate lipid-lowering therapy in indicated cases. As of April 2023, the portfolio of lipid-lowering medication has been expanded to include inclisiran (small interfering RNA against proprotein convertase subtilisin/kexin type 9 (PCSK9)), which is administered directly in cardiologists' and internists' outpatient clinics, ensuring 100% adherence. In severe hypertriglyceridaemia, fibrate monotherapy may be indicated in addition to dietary and regimen measures; if this treatment fails, some patients may be offered lomitapide, volanesorsen or evinacumab as part of clinical trials or specific treatment programmes if very strict indication criteria are met.

Familial Hypercholesterolemia: Real-World Data of 1236 Patients Attending a Czech Lipid Clinic. A Retrospective Analysis of Experience in More than 50 years. Part II. Clinical Characteristics

Introduction: Patients with familial hypercholesterolemia (FH) are at increased risk of premature atherosclerotic cardiovascular disease (ASCVD).

Aim of study: To perform a retrospective analysis of data to assess the effects of individual lipoproteins and other risk factors (RFs) on the development of ASCVD and to compare these parameters in individuals with versus without ASCVD.

Patients and methods: Our study group included a total of 1,236 patients with FH (395 men and 841 women with a mean age of 44.8 ± 16.7 years) attending a single lipid clinic. The diagnosis of FH was established using the Dutch Lipid Clinic Network score (DLCN). Among the 1236 FH patients, 1,008 of them [854 suspected with LDL receptor-mediated FH and 154 with familial defective apolipoprotein B-100 (FDB)] were genetically analysed. Their RFs were assessed based on the patients’ clinical characteristics.

Results: While patients with ASCVD had higher baseline LDL-C, TC, TG and Lp(a) compared with patients without this diagnosis, this ratio was just the opposite by the follow-up. The highest statistically significant differences were seen in the baseline levels of Lp(a) and, quite surprisingly, TG. Except for Lp(a), the levels of all lipid parameters declined significantly over time. While the incidence of diabetes and arterial hypertension was not higher in our group compared with the general population, these patients were at a more significant risk of ASCVD.

Conclusion: Familial hypercholesterolemia is a major RF for the development of ASCVD. While our analysis confirmed the important role of LDL-C, it also corroborated a strong correlation between ASCVD and other lipid parameters, and Lp(a) and TG in particular. Familial hypercholesterolemia is not the only RF and, to reduce cardiovascular risk of their patients, physicians have to search for other potential RFs. Patients diagnosed to have FH benefit from attending a specialized lipid clinic perse.