Cost-Effectiveness of Lipid-Lowering Treatments in Young Adults

Cost-Effectiveness of a Polypill for Cardiovascular Disease Prevention in an Underserved Population

Importance

The Southern Community Cohort Study (SCCS) Polypill Trial showed that a cardiovascular polypill (a single pill containing a statin and 3 half-standard dose antihypertensive medications) effectively controls cardiovascular disease (CVD) risk factors in a majority Black race and low-income population. The cost-effectiveness of polypill treatment in this population has not been previously studied.

Objective

To determine the cost-effectiveness of the cardiovascular polypill.

Design, Setting, and Participants

A discrete-event simulation version of the well-established CVD policy model simulated clinical and economic outcomes of the SCCS Polypill Trial from a health care sector perspective. A time horizon of 10 years was adopted. Polypill treatment was priced at $463 per year in the base-case analysis. Model input data were derived from the National Health and Nutrition Examination Survey, Medical Expenditure Panel Survey, pooled longitudinal cohort studies, the SCCS Polypill Trial, and published literature. Two cohorts were analyzed: an SCCS Polypill Trial-representative cohort of 100 000 individuals and all trial-eligible non-Hispanic Black US adults. Study parameters and model inputs were varied extensively in 1-way and probabilistic sensitivity analysis.

Exposures

Polypill treatment or usual care.

Main Outcome and Measures

Primary outcomes were direct health care costs (US dollar 2023) and quality-adjusted life-years (QALYs), both discounted 3% annually, and the incremental cost per QALY gained.

Results

In the trial-representative cohort of 100 000 individuals (mean [SD] age, 56.9 [5.9] years; 61 807 female [61.8%]), polypill treatment was projected to yield a mean of 1190 (95% uncertainty interval, 287-2159) additional QALYs compared with usual care, at a cost of approximately $10 152 000. Hence, polypill treatment was estimated to cost $8560 per QALY gained compared with usual care and was high value (<$50 000 per QALY gained) in 99% of simulations. Polypill treatment was estimated to be high value when priced at $559 or less per year and cost saving when priced at $443 or less per year. In almost all sensitivity analyses, polypill treatment remained high value. In a secondary analysis of 3 602 427 trial-eligible non-Hispanic Black US adults (mean [SD] age, 55.4 [7.6] years; 2 006 597 female [55.7%]), polypill treatment was high value, with an estimated cost of $13 400 per QALY gained.

Conclusions and Relevance

Results of this economic evaluation suggest that polypill treatment could be a high value intervention for a low-income, majority Black population with limited access to health care services. It could additionally reduce health disparities.

Reappraisal of statin primary prevention trials: implications for identification of the statin-eligible primary prevention patient

BACKGROUND AND AIMS

Identification of patients eligible for primary prevention statin therapy is complex, often relying upon risk algorithms that diverge internationally. Our goal was to develop a simpler global definition of statin-eligible primary prevention patients.

METHODS

Randomized clinical trials (RCTs) cited in North American and European dyslipidemia guidelines justifying primary prevention statins for cardiovascular risk reduction were critically reappraised according to eligibility criteria and characteristics of actual enrollees. Statin-eligibility based on meeting minimal enrolment criteria versus risks calculated using either the Framingham Risk Score, the Pooled Cohort Equation and the Systematic Coronary Risk Estimate 2 were contrasted.

RESULTS

Patient scenarios meeting minimal RCT eligibility criteria seldom attained high enough 10 year risk of events according to the algorithms tested and thus would not be eligible for statin therapy. Overall, enrollees were 63.9 ± 8.9 years (mean ± SD) with low density lipoprotein-cholesterol (LDL-C) 3.53 ± 0.91 mmol/L. Enrollees in trials studying the lowest LDL-C levels were generally older and had additional risk factors.

CONCLUSIONS

Results of primary prevention RCTs justify treatment of more subjects and lower risk subjects than current risk algorithm-based guidelines. Based on a synthesis of RCT inclusion/exclusion criteria and the characteristics of enrollees, we propose that a statin-indicated primary prevention subject is one who is 40 to 70 years with a low density lipoprotein-cholesterol (LDL-C) ≥ 3.0 mmol/L or is 55 to 80 years with LDL-C ≥ 1.8 mmol/L and additional risk factors.

Early-onset atherosclerotic cardiovascular disease

Recent trends indicate a concerning increase in early-onset atherosclerotic cardiovascular disease (ASCVD) among younger individuals (men aged <55 years women aged <65 years). These findings highlight the pathobiology of ASCVD as a disease process that begins early in life and underscores the need for more tailored screening methods and preventive strategies. Increasing attention has been placed on the growing burden of traditional cardiometabolic risk factors in young individuals while also recognizing unique factors that mediate risk of pre-mature atherosclerosis in this demographic such as substance use, socioeconomic disparities, adverse pregnancy outcomes, and chronic inflammatory states that contribute to the increasing incidence of early ASCVD. Additionally, mounting evidence has pointed out significant disparities in the diagnosis and management of early ASCVD and cardiovascular outcomes based on sex and race. Moving towards a more personalized approach, emerging data and technological developments using diverse tools such as polygenic risk scores and coronary artery calcium scans have shown potential in earlier detection of ASCVD risk. Thus, we review current evidence on causal risk factors that drive the increase in early ASCVD and highlight emerging tools to improve ASCVD risk assessment in young individuals.

Prediction of Cumulative Exposure to Atherogenic Lipids During Early Adulthood

BACKGROUND

The ability of a 1-time measurement of non-high-density lipoprotein cholesterol (non-HDL-C) or low-density lipoprotein cholesterol (LDL-C) to predict the cumulative exposure to these lipids during early adulthood (age 18-40 years) and the associated atherosclerotic cardiovascular disease (ASCVD) risk after age 40 years is not clear.

OBJECTIVES

The objectives of this study were to evaluate whether a 1-time measurement of non-HDL-C or LDL-C in a young adult can predict cumulative exposure to these lipids during early adulthood, and to quantify the association between cumulative exposure to non-HDL-C or LDL-C during early adulthood and the risk of ASCVD after age 40 years.

METHODS

We included CARDIA (Coronary Artery Risk Development in Young Adults Study) participants who were free of cardiovascular disease before age 40 years, were not taking lipid-lowering medications, and had ≥3 measurements of LDL-C and non-HDL-C before age 40 years. First, we assessed the ability of a 1-time measurement of LDL-C or non-HDL-C obtained between age 18 and 30 years to predict the quartile of cumulative lipid exposure from ages 18 to 40 years. Second, we assessed the associations between quartiles of cumulative lipid exposure from ages 18 to 40 years with ASCVD events (fatal and nonfatal myocardial infarction and stroke) after age 40 years.

RESULTS

Of 4,104 CARDIA participants who had multiple lipid measurements before and after age 30 years, 3,995 participants met our inclusion criteria and were in the final analysis set. A 1-time measure of non-HDL-C and LDL-C had excellent discrimination for predicting membership in the top or bottom quartiles of cumulative exposure (AUC: 0.93 for the 4 models). The absolute values of non-HDL-C and LDL-C that predicted membership in the top quartiles with the highest simultaneous sensitivity and specificity (highest Youden's Index) were >135 mg/dL for non-HDL-C and >118 mg/dL for LDL-C; the values that predicted membership in the bottom quartiles were <107 mg/dL for non-HDL-C and <96 mg/dL for LDL-C. Individuals in the top quartile of non-HDL-C and LDL-C exposure had demographic-adjusted HRs of 4.6 (95% CI: 2.84-7.29) and 4.0 (95% CI: 2.50-6.33) for ASCVD events after age 40 years, respectively, when compared with each bottom quartile.

CONCLUSIONS

Single measures of non-HDL-C and LDL-C obtained between ages 18 and 30 years are highly predictive of cumulative exposure before age 40 years, which in turn strongly predicts later-life ASCVD events.

Characteristics of Patients With Atherosclerotic Cardiovascular Disease in Belgium and Current Treatment Patterns for the Management of Elevated LDL-C Levels

BACKGROUND

Dyslipidemia remains the major cause of atherosclerotic cardiovascular disease (ASCVD). Lipid management in patients with increased cardiovascular (CV) risk needs improvement across Europe, and data gaps are noticeable at the country level.

HYPOTHESIS

We described the current treatment landscape in Belgium, hypothesizing that lipid management in patients with ASCVD remains inadequate and aiming to understand the reasons.

METHODS

Using data from an anonymized primary care database in Belgium derived from 494 750 individuals, we identified those with any CV risk factor between November 2019 and October 2022 and described the clinical features of patients with ASCVD. The main outcomes were the proportion of patients (i) receiving lipid-lowering therapies (LLTs), (ii) per low-density lipoprotein cholesterol (LDL-C) threshold, stratified per LLT, (iii) reaching the 2021 ESC recommended LDL-C goals, and (iv) LDL-C reduction per type of LLT was also determined.

RESULTS

Among 40 888 patients with very high CV risk, 24 859 had established ASCVD. Most patients with ASCVD were either receiving monotherapy (59.6%) or had no documented LLT (25.1%). Further, 64.2% of those with no documented LLT exhibited LDL-C levels ≥ 100 mg/dL. Among common treatment options, one of the greatest improvements in LDL-C levels was achieved with combination therapy of statin and ezetimibe, reducing LDL-C levels by 41.5% (p < 0.0001). Yet, in this group, 24.8% of patients had still LDL-C levels ≥ 100 mg/dL and only 20.7% were at goal.

CONCLUSION

Our study emphasizes the importance of developing strategies to help patients achieve their LDL-C goals, with a focus on supporting the implementation of combination LLT in routine clinical practice.

Low-Density Lipoprotein Cholesterol, Cardiovascular Risk Factors, and Predicted Risk in Young Adults

BACKGROUND

Young adults with elevated LDL-C may experience increased burden of additional cardiovascular disease (CVD) risk factors. It is unclear how much LDL-C levels, a modifiable factor, correlate with non-LDL-C CVD risk factors among young adults or how strongly these CVD risk factors are associated with long-term predicted CVD risk. We quantified clustering of non-LDL-C CVD risk factors by LDL-C among young adults to assess the association between non-LDL-C and LDL-C risk factors with predicted CVD risk in young adults.

METHODS

The current analysis is a cross-sectional study of adults < 40 years with an LDL-C< 190 mg/dL participating in the National Health and Nutrition Examination Survey (NHANES) between January 2015 and March 2020. We measured the prevalence of non-LDL-C risk factors by LDL-C and association between LDL-C and non-LDL-C risk factors with predicted risk of CVD by the Predicting Risk of cardiovascular disease EVENTs (PREVENT) equations.

RESULTS

Among 2108 young adults, the prevalence of LDL-C ≥ 130 mg/dL was 15.5%. Compared with young adults with LDL-C < 100 mg/dL, those with LDL-C 100-< 130, 130-< 160, and 160-< 190 mg/dL had greater non-LDL-C risk factors. Both LDL-C and non-LDL-C risk factors were independently associated with a 30-year risk of CVD (OR 1.05, 95% CI 1.03-1.07 and OR 1.17, 95% CI 1.12-1.23, respectively). The association of LDL-C and 30-year risk did not vary by non-LDL-C risk factor burden (pinteraction = 0.43).

CONCLUSION

Non-LDL-C risk factors cluster among increasing levels of LDL-C in young adults. Greater guidance on how to manage cardiovascular risk factors in young adults is needed.

The Hurdle of Access to Emerging Therapies and Potential Solutions in the Management of Dyslipidemias

This review explores the many barriers to accessing lipid-lowering therapies (LLTs) for the prevention and management of atherosclerotic cardiovascular disease (ASCVD). Geographical, knowledge, and regulatory barriers significantly impede access to LLTs, exacerbating disparities in healthcare infrastructure and affordability. We highlight the importance of policy reforms, including pricing regulations and reimbursement policies, for enhancing affordability and streamlining regulatory processes. Innovative funding models, such as value-based pricing and outcome-based payment arrangements, have been recommended to make novel LLTs more accessible. Public health interventions, including community-based programs and telemedicine, can be utilized to reach underserved populations and improve medication adherence. Education and advocacy initiatives led by patient advocacy groups and healthcare providers play a crucial role in raising awareness and empowering patients. Despite the barriers to access, novel LLTs present a big opportunity to reduce the burden of ASCVD, emphasizing the need for collaborative efforts among policymakers, healthcare providers, industry stakeholders, and patient advocacy groups to address these barriers to improve access to LLTs globally.

The Causal-Benefit Model to Prevent Cardiovascular Events

Selecting individuals for preventive lipid-lowering therapy is presently governed by the 10-year risk model. Once a prespecified level of cardiovascular disease risk is equaled or exceeded, individuals become eligible for preventive lipid-lowering therapy. A key limitation of this model is that only a small minority of individuals below the age of 65 years are eligible for therapy. However, just under one-half of all cardiovascular disease events occur below this age. Additionally, in many, the disease that caused their events after 65 years of age developed and progressed before 65 years of age. The causal-benefit model of prevention identifies individuals based both on their risk and the estimated benefit from lowering atherogenic apoB lipoprotein levels. Adopting the causal-benefit model would increase the number of younger subjects eligible for preventive treatment, would increase the total number of cardiovascular disease events prevented at virtually the same number to treat, and would be cost-effective.

Familial Hypercholesterolemia Variant and Cardiovascular Risk in Individuals With Elevated Cholesterol

Importance

Familial hypercholesterolemia (FH) is a genetic disorder that often results in severely high low-density lipoprotein cholesterol (LDL-C) and high risk of premature coronary heart disease (CHD). However, the impact of FH variants on CHD risk among individuals with moderately elevated LDL-C is not well quantified.

Objective

To assess CHD risk associated with FH variants among individuals with moderately (130-189 mg/dL) and severely (≥190 mg/dL) elevated LDL-C and to quantify excess CHD deaths attributable to FH variants in US adults.

Design, Setting, and Participants

A total of 21 426 individuals without preexisting CHD from 6 US cohort studies (Atherosclerosis Risk in Communities study, Coronary Artery Risk Development in Young Adults study, Cardiovascular Health Study, Framingham Heart Study Offspring cohort, Jackson Heart Study, and Multi-Ethnic Study of Atherosclerosis) were included, 63 of whom had an FH variant. Data were collected from 1971 to 2018, and the median (IQR) follow-up was 18 (13-28) years. Data were analyzed from March to May 2023.

Exposures

LDL-C, cumulative past LDL-C, FH variant status.

Main Outcomes and Measures

Cox proportional hazards models estimated associations between FH variants and incident CHD. The Cardiovascular Disease Policy Model projected excess CHD deaths associated with FH variants in US adults.

Results

Of the 21 426 individuals without preexisting CHD (mean [SD] age 52.1 [15.5] years; 12 041 [56.2%] female), an FH variant was found in 22 individuals with moderately elevated LDL-C (0.3%) and in 33 individuals with severely elevated LDL-C (2.5%). The adjusted hazard ratios for incident CHD comparing those with and without FH variants were 2.9 (95% CI, 1.4-6.0) and 2.6 (95% CI, 1.4-4.9) among individuals with moderately and severely elevated LDL-C, respectively. The association between FH variants and CHD was slightly attenuated when further adjusting for baseline LDL-C level, whereas the association was no longer statistically significant after adjusting for cumulative past LDL-C exposure. Among US adults 20 years and older with no history of CHD and LDL-C 130 mg/dL or higher, more than 417 000 carry an FH variant and were projected to experience more than 12 000 excess CHD deaths in those with moderately elevated LDL-C and 15 000 in those with severely elevated LDL-C compared with individuals without an FH variant.

Conclusions and Relevance

In this pooled cohort study, the presence of FH variants was associated with a 2-fold higher CHD risk, even when LDL-C was only moderately elevated. The increased CHD risk appeared to be largely explained by the higher cumulative LDL-C exposure in individuals with an FH variant compared to those without. Further research is needed to assess the value of adding genetic testing to traditional phenotypic FH screening.

Lipid-Lowering Strategies for Primary Prevention of Coronary Heart Disease in the UK: A Cost-Effectiveness Analysis

AIM

We aimed to assess the cost effectiveness of four different lipid-lowering strategies for primary prevention of coronary heart disease initiated at ages 30, 40, 50, and 60 years from the UK National Health Service perspective.

METHODS

We developed a microsimulation model comparing the initiation of a lipid-lowering strategy to current standard of care (control). We included 458,692 participants of the UK Biobank study. The four lipid-lowering strategies were: (1) low/moderate-intensity statins; (2) high-intensity statins; (3) low/moderate-intensity statins and ezetimibe; and (4) inclisiran. The main outcome was the incremental cost-effectiveness ratio for each lipid-lowering strategy compared to the control, with 3.5% annual discounting using 2021 GBP (£); incremental cost-effectiveness ratios were compared to the UK willingness-to-pay threshold of £20,000-£30,000 per quality-adjusted life-year.

RESULTS

The most effective intervention, low/moderate-intensity statins and ezetimibe, was projected to lead to a gain in quality-adjusted life-years of 0.067 per person initiated at 30 and 0.026 at age 60 years. Initiating therapy at 40 years of age was the most cost effective for all lipid-lowering strategies, with incremental cost-effectiveness ratios of £2553 (95% uncertainty interval: 1270, 3969), £4511 (3138, 6401), £11,107 (8655, 14,508), and £1,406,296 (1,121,775, 1,796,281) per quality-adjusted life-year gained for strategies 1-4, respectively. Incremental cost-effectiveness ratios were lower for male individuals (vs female individuals) and for people with higher (vs lower) low-density lipoprotein-cholesterol. For example, low/moderate-intensity statin use initiated from age 40 years had an incremental cost-effectiveness ratio of £5891 (3822, 9348), £2174 (772, 4216), and was dominant (i.e. cost saving; -2,760, 350) in female individuals with a low-density lipoprotein-cholesterol of ≥ 3.0, ≥ 4.0 and ≥ 5.0 mmol/L, respectively. Inclisiran was not cost effective in any sub-group at its current price.

CONCLUSIONS

Low-density lipoprotein-cholesterol lowering from early ages is a more cost-effective strategy than late intervention and cost effectiveness increased with the increasing lifetime risk of coronary heart disease.

Cost-effectiveness analysis of initial treatment with single-pill combination antihypertensive medications

Hypertension guidelines recommend initiating treatment with single pill combination (SPC) antihypertensive medications, but SPCs are used by only one-third of treated hypertensive US adults. This analysis estimated the cost-effectiveness of initial treatment with SPC dual antihypertensive medications compared with usual care monotherapy in hypertensive US adults.The validated BP Control Model-Cardiovascular Disease (CVD) Policy Model simulated initial SPC dual therapy (two half-standard doses in a single pill) compared with initial usual care monotherapy (half-standard dose when baseline systolic BP < 20 mmHg above goal and one standard dose when ≥20 mmHg above goal). Secondary analyses examined equivalent dose monotherapy (one standard dose) and equivalent dose dual therapy as separate pills (two half-standard doses). The primary outcomes were direct healthcare costs, quality-adjusted life-years (QALYs), and incremental cost-effectiveness ratio (ICER) over 10 years from a US healthcare sector perspective.At 10 years, initial dual drug SPC was projected to yield 0.028 (95%UI 0.008 to 0.051) more QALYs at no greater cost ($73, 95%UI -$1 983 to $1 629) than usual care monotherapy. In secondary analysis, SPC dual therapy was cost-effective vs. equivalent dose monotherapy (ICER $8 000/QALY gained) and equivalent dose dual therapy as separate pills (ICER $57 000/QALY gained). At average drug prices, initiating antihypertensive treatment with SPC dual therapy is more effective at no greater cost than usual care initial monotherapy and has the potential to improve BP control rates and reduce the burden of CVD in the US.

Remnant Cholesterol in Young Adulthood Is Associated With Left Ventricular Remodeling and Dysfunction in Middle Age: The CARDIA Study

BACKGROUND

Recent studies have shown that remnant cholesterol (RC) is associated with incident heart failure; however, its association with left ventricular (LV) structure and function is unclear. We aimed to evaluate the association between RC levels in young adulthood and LV structure and function in middle age.

METHODS

We included 3321 participants from the CARDIA study (Coronary Artery Risk Development in Young Adults) at baseline. RC was calculated as total cholesterol minus high-density lipoprotein cholesterol minus calculated low-density lipoprotein cholesterol, and the RC trajectories that followed a similar pattern of change over time were identified using the latent class growth mixture model. LV structure and function were assessed using echocardiography at CARDIA study year 25. Multivariable linear regression models were performed to assess the associations of both baseline and trajectories of RC levels with LV structure and function.

RESULTS

Among 3321 participants, the mean age was 24.99±3.62 years: 1450 (43.90%) were male, and 1561 (47.00%) were Black. After multivariate adjustment, higher baseline RC (per SD in log-transformed) was associated with higher LV mass index (β=1.29; P=0.004), worse global longitudinal strain (β=0.19; P<0.001), worse global circumferential strain (β=0.16; P=0.014), lower septal e' (β=-0.26; P<0.001), lower lateral e' (β=-0.18; P=0.003), and higher E/e' (β=0.15; P=0.003). Three RC trajectories were identified during follow-up: low increasing (42.4%), moderate increasing (45.5%), and high increasing (12.1%). Similarly, compared with the low-increasing group, the high-increasing RC trajectory group was related to higher LV mass index, worse global longitudinal strain, lower septal e', lower lateral e', and higher E/e'.

CONCLUSIONS

Elevated RC levels in young adulthood were related to adverse LV structural and functional alterations in midlife. Long-term trajectories of RC levels during young adulthood help identify individuals at a higher risk for adverse LV remodeling and dysfunction.

REGISTRATION

URL: https://www.clinicaltrials.gov; Unique identifier: NCT00005130.

European guidelines for the treatment of dyslipidaemias: New concepts and future challenges

Atherosclerotic cardiovascular disease (ASCVD) is the leading cause of mortality and morbidity worldwide. Low-density lipoprotein cholesterol (LDL-C) is one of the most important causal factors for ASCVD. Based on the evidence of the clinical benefits of lowering LDL-C, the current 2019 European Society of Cardiology (ESC) and European Atherosclerosis Society (EAS) guidelines provide guidance for optimal management of people with dyslipidaemia. These guidelines include new and revised concepts, with a general tightening of LDL-C goals to be achieved, especially for patients at high and very high cardiovascular risk, based on the results of clinical trials of the recently approved drugs for the treatment of hypercholesterolaemia. However, some issues are still open for discussion. Among others, the concept of lifetime exposure to elevated LDL-C levels will probably drive the pharmacological approach and future guidelines. In addition, other factors such as non-HDL-C, apolipoprotein B, and lipoprotein(a) are becoming increasingly important in determining cardiovascular risk. Finally, there is the question of whether combination therapy should be used as the first step to maximise the effectiveness of the pharmacological approach, avoiding the stepwise approach, which is likely to have a detrimental effect on adherence. Given the ever-changing landscape and the availability of new drugs targeting other important lipids, future guidelines will need to consider all these issues.

Effectiveness and Cost-Effectiveness of Team-Based Care for Hypertension: A Meta-Analysis and Simulation Study

BACKGROUND

Team-based care (TBC), a team of ≥2 healthcare professionals working collaboratively toward a shared clinical goal, is a recommended strategy to manage blood pressure (BP). However, the most effective and cost-effective TBC strategy is unknown.

METHODS

A meta-analysis of clinical trials in US adults (aged ≥20 years) with uncontrolled hypertension (≥140/90 mm Hg) was performed to estimate the systolic BP reduction for TBC strategies versus usual care at 12 months. TBC strategies were stratified by the inclusion of a nonphysician team member who could titrate antihypertensive medications. The validated BP Control Model-Cardiovascular Disease Policy Model was used to project the expected BP reductions out to 10 years and simulate cardiovascular disease events, direct healthcare costs, quality-adjusted life years, and cost-effectiveness of TBC with physician and nonphysician titration.

RESULTS

Among 19 studies comprising 5993 participants, the 12-month systolic BP change versus usual care was -5.0 (95% CI, -7.9 to -2.2) mm Hg for TBC with physician titration and -10.5 (-16.2 to -4.8) mm Hg for TBC with nonphysician titration. Relative to usual care at 10 years, TBC with nonphysician titration was estimated to cost $95 (95% uncertainty interval, -$563 to $664) more per patient and gain 0.022 (0.003-0.042) quality-adjusted life years, costing $4400/quality-adjusted life year gained. TBC with physician titration was estimated to cost more and gain fewer quality-adjusted life years than TBC with nonphysician titration.

CONCLUSIONS

TBC with nonphysician titration yields superior hypertension outcomes compared with other strategies and is a cost-effective way to reduce hypertension-related morbidity and mortality in the United States.

Lost Therapeutic Benefit of Delayed Low-Density Lipoprotein Cholesterol Control in Statin-Treated Patients and Cost-Effectiveness Analysis of Lipid-Lowering Intensification

OBJECTIVES

Attainment of low-density lipoprotein cholesterol (LDL-C) therapeutic goals in statin-treated patients remains suboptimal. We quantified the health economic impact of delayed lipid-lowering intensification from an Australian healthcare and societal perspective.

METHODS

A lifetime Markov cohort model (n = 1000) estimating the impact on coronary heart disease (CHD) of intensifying lipid-lowering treatment in statin-treated patients with uncontrolled LDL-C, at moderate to high risk of CHD with no delay or after a 5-year delay, compared with standard of care (no intensification), starting at age 40 years. Intensification was tested with high-intensity statins or statins + ezetimibe. LDL-C levels were extracted from a primary care cohort. CHD risk was estimated using the pooled cohort equation. The effect of cumulative exposure to LDL-C on CHD risk was derived from Mendelian randomization data. Outcomes included CHD events, quality-adjusted life-years (QALYs), healthcare and productivity costs, and incremental cost-effectiveness ratios (ICERs). All outcomes were discounted annually by 5%.

RESULTS

Over the lifetime horizon, compared with standard of care, achieving LDL-C control with no delay with high-intensity statins prevented 29 CHD events and yielded 30 extra QALYs (ICERs AU$13 205/QALY) versus 22 CHD events and 16 QALYs (ICER AU$20 270/QALY) with a 5-year delay. For statins + ezetimibe, no delay prevented 53 CHD events and gave 45 extra QALYs (ICER AU$37 271/QALY) versus 40 CHD events and 29 QALYs (ICER of AU$44 218/QALY) after a 5-year delay.

CONCLUSIONS

Delaying attainment of LDL-C goals translates into lost therapeutic benefit and a waste of resources. Urgent policies are needed to improve LDL-C goal attainment in statin-treated patients.

The Health and Economic Impact of Using a Sugar Sweetened Beverage Tax to Fund Fruit and Vegetable Subsidies in New York City: A Modeling Study

Low fruit and vegetable (FV) intake and high sugar-sweetened beverage (SSB) consumption are independently associated with an increased risk of developing cardiovascular disease (CVD). Many people in New York City (NYC) have low FV intake and high SSB consumption, partly due to high cost of fresh FVs and low cost of and easy access to SSBs. A potential implementation of an SSB tax and an FV subsidy program could result in substantial public health and economic benefits. We used a validated microsimulation model for predicting CVD events to estimate the health impact and cost-effectiveness of SSB taxes, FV subsidies, and funding FV subsidies with an SSB tax in NYC. Population demographics and health profiles were estimated using data from the NYC Health and Nutrition Examination Survey. Policy effects and price elasticity were derived from recent meta-analyses. We found that funding FV subsidies with an SSB tax was projected to be the most cost-effective policy from the healthcare sector perspective. From the societal perspective, the most cost-effective policy was SSB taxes. All policy scenarios could prevent more CVD events and save more healthcare costs among men compared to women, and among Black vs. White adults. Public health practitioners and policymakers may want to consider adopting this combination of policy actions, while weighing feasibility considerations and other unintended consequences.

The role of noninvasive scoring systems for predicting cardiovascular disease risk in patients with nonalcoholic fatty liver disease: a systematic review and meta-analysis

BACKGROUNDS

Cardiovascular disease (CVD) is suggested as a leading cause of death among patients with nonalcoholic fatty liver disease (NAFLD). The aim of this work was to clarify the role of noninvasive scoring systems (NSSs) in predicting CVD risk among this population.

METHODS

The PubMed, Web of Science, and Cochrane databases were searched until 23 March 2022. Meta-analysis was performed for three most commonly used NSS separately, that is, fibrosis-4 index (FIB-4), NAFLD fibrosis score (NFS), and AST/platelet ratio index (APRI).

RESULTS

Totally, nine studies including 155 382 patients with NAFLD were enrolled. Patients with NAFLD had a higher risk of CVD with increasing FIB-4 score (1.94, 1.52-2.46), the association remained significant after adjustment for age, sex, body mass index, hypertension, and diabetes (2.44, 1.85-3.22). Similarly, a higher risk of CVD was also observed in patients with increasing NFS (2.17, 1.58-2.98) and APRI scores (1.36, 1.04-1.79) in the unadjusted model. However, in the adjusted model, the association was significant only for NFS (3.83, 1.40-10.43), but not for APRI (1.41, 0.79-2.51). Additionally, the increment in CVD risk was most noticeable in subgroup of FIB &gt; 2.67 vs. FIB ≤ 1.3 (6.52, 3.07-13.86) and subgroup of NFS &gt; 0.676 vs. NFS ≤ -1.455 (16.88, 5.68-50.23). All subgroup analyses showed significant associations between FIB-4, NFS, and risk of CVD. Sensitivity analyses did not modify these results.

CONCLUSIONS

FIB-4 and NFS might be useful in identifying those who are at higher risk of CVD among patients with NAFLD. However, APRI was not recommended for this use.

Eradicating Atherosclerosis: Should We Start Statins at Younger Ages and at Lower LDL-Cs

PURPOSE OF REVIEW

Given the increasing burden of cardiovascular disease, we review the literature for earlier initiation of statin therapy at younger ages and lower low-density lipoprotein cholesterol (LDL-C) levels, with the goal of preventing the development of atherosclerosis prior to clinical events.

RECENT FINDINGS

There is a rising prevalence of dyslipidemia among younger adults. Although guidelines offer recommendations for adults over 40, there is little guidance for the management of younger adults with moderately elevated LDL-C levels. Earlier and more aggressive statin use may slow progression, or even halt atherosclerosis, and may likewise be beneficial and cost-effective on a population level. Further research is needed to define the exact age and LDL-C level at which to start statin therapy. Until then, more detailed risk stratification with lab testing and imaging should be used to identify younger adults at the highest risk.

Severe Mental Illness and Cardiovascular Disease: JACC State-of-the-Art Review

People with severe mental illness, consisting of schizophrenia, bipolar disorder, and major depression, have a high burden of modifiable cardiovascular risk behaviors and conditions and have a cardiovascular mortality rate twice that of the general population. People with acute and chronic cardiovascular disease are at a higher risk of developing mental health symptoms and disease. There is emerging evidence for shared etiological factors between severe mental illness and cardiovascular disease that includes biological, genetic, and behavioral mechanisms. This state-of-the art review will describe the relationship between severe mental illness and cardiovascular disease, explore the factors that lead to poor cardiovascular outcomes in people with severe mental illness, propose strategies to improve the cardiovascular health of people with severe mental illness, and present areas for future research focus.

Review of Lipid-Lowering Therapy in Women from Reproductive to Postmenopausal Years

Although cardiovascular disease is the leading cause of death in women, cardiovascular risk factors remain underrecognized and undertreated. Hyperlipidemia is one of the leading modifiable risk factors for CVD. Statins are the mainstay of lipid lowering therapy (LLT), with additional agents such as ezetimibe and proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitors as additive or alternative therapies. Clinical trials have demonstrated that these LLTs are equally efficacious in lipid lowering and cardiovascular risk reduction in women as they are in men. Although the data on statin teratogenicity is evolving, in times of pregnancy or attempted pregnancy, most lipid-lowering agents are generally avoided due to lack of high-quality safety data. This leads to limited treatment options in pregnant women with hyperlipidemia or cardiovascular disease. During the perimenopausal period, the mainstay of lipid management remains consistent with guidelines across all ages. Hormone replacement therapy for cardiovascular risk reduction is not recommended. Future research is warranted to target sex-based disparities in LLT initiation and persistence across the life course.

Approach to patients with elevated low-density lipoprotein cholesterol levels

Elevated low-density lipoprotein cholesterol (LDL-C) levels increase the risk of atherosclerotic cardiovascular disease (ASCVD) and lowering LDL-C levels reduces the risk of ASCVD. In patients with elevated LDL-C levels it is important to consider whether lifestyle, other medical conditions, medications, or genetic factors could be causing or contributing to the elevation. There are guidelines from various organizations outlining the approach to lowering LDL-C levels but while these guidelines agree on many issues there are numerous areas where recommendations are discordant. In this review, we outline several principles that will help in deciding who and how to treat patients with elevated LDL-C levels. Specifically, we discuss evidence indicating that the sooner one initiates therapy the better and the greater the reduction in LDL-C the better. Additionally, the higher the LDL-C level and the higher the risk of ASCVD, the greater the benefits of treatment. Using these principles will help in making decisions regarding the treatment of LDL-C levels.

Beyond Ten-Year Risk: A Cost-Effectiveness Analysis of Statins for the Primary Prevention of Cardiovascular Disease

Cholesterol guidelines typically prioritize primary prevention statin therapy on the basis of 10-year risk of cardiovascular disease. The advent of generic pricing may justify expansion of statin eligibility. Moreover, 10-year risk may not be the optimal approach for statin prioritization. We estimated the cost-effectiveness of expanding preventive statin eligibility and evaluated novel approaches to prioritization from a Scottish health sector perspective.