Publications by authors named "Marston N"

Aims: To evaluate the predictive value of a contemporary type 2 diabetes (T2D) polygenic score (PGS) in detecting incident diabetes across a range of diabetes risk factors.

Materials And Methods: We analysed participants in the Further Cardiovascular Outcomes Research With PCSK9 Inhibition in Subjects With Elevated Risk (FOURIER) trial (ClinicalTrials.gov, number NCT0176463), which compared the efficacy of proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitor evolocumab versus placebo in lowering cardiovascular outcomes in participants with stable atherosclerotic cardiovascular disease and LDL cholesterol levels of 70 mg/dL (1.

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This National Lipid Association (NLA) Expert Clinical Consensus provides an overview of the physiologic and clinical considerations regarding the role of apolipoprotein B (apoB) measurement to guide clinical care based on the available scientific evidence and expert opinion. ApoB represents the total concentration of atherogenic lipoprotein particles in the circulation and more accurately reflects the atherogenic burden of lipoproteins when compared to low-density lipoprotein cholesterol (LDL-C). ApoB is a validated clinical measurement that augments the information found in a standard lipoprotein lipid panel; therefore, there is clinical value in using apoB in conjunction with a standard lipoprotein lipid profile when assessing risk and managing lipid-lowering therapy (LLT).

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  • Clonal hematopoiesis of indeterminate potential (CHIP) is linked to a higher risk of cardiovascular (CV) disease in general populations, but its impact on patients with existing CV conditions in clinical trials was unclear.
  • A study of 63,700 patients from five randomized CV therapy trials found that while CHIP+ patients had a 30% higher risk of a first myocardial infarction (heart attack), their risk for recurrent heart attacks showed no significant increase.
  • The research also indicated that CHIP does not significantly affect the effectiveness of standard CV treatments, suggesting that both CHIP+ and CHIP- patients benefit similarly from these therapies.
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Background: Reducing the levels of triglycerides and triglyceride-rich lipoproteins remains an unmet clinical need. Olezarsen is an antisense oligonucleotide targeting messenger RNA for apolipoprotein C-III (APOC3), a genetically validated target for triglyceride lowering.

Methods: In this phase 2b, randomized, controlled trial, we assigned adults either with moderate hypertriglyceridemia (triglyceride level, 150 to 499 mg per deciliter) and elevated cardiovascular risk or with severe hypertriglyceridemia (triglyceride level, ≥500 mg per deciliter) in a 1:1 ratio to either a 50-mg or 80-mg cohort.

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Aims: Remnant cholesterol and very low-density lipoprotein cholesterol (VLDL-C) are increasingly recognized risk factors for atherosclerotic disease with few therapeutic options. Angiopoietin-like 3 (ANGPTL3), a key protein in the metabolism of triglyceride-rich lipoproteins, is a promising target.

Methods And Results: TRANSLATE-TIMI 70 was a double-blind, placebo-controlled randomized trial testing seven dose regimens of vupanorsen, an antisense oligonucleotide against ANGPTL3, in adults with non-HDL-C ≥ 100 mg/dL and triglycerides 150-500 mg/dL.

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  • A study was conducted to develop a polygenic risk score (PRS) specifically for aortic stenosis and compare its effectiveness against traditional clinical risk factors.
  • This research involved analyzing data from large cohorts, including over 135,000 participants from the Million Veteran Program and various clinical trials between 2011 and 2020.
  • The findings indicated that the new aortic stenosis PRS, which utilized millions of genetic variants, may provide significant risk estimation for the condition compared to established clinical methods.
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  • Type 2 diabetes (T2D) is a complex disease influenced by various genetic factors and molecular mechanisms that vary by cell type and ancestry.
  • In a large study involving over 2.5 million individuals, researchers identified 1,289 significant genetic associations linked to T2D, including 145 new loci not previously reported.
  • The study categorized T2D signals into eight distinct clusters based on their connections to cardiometabolic traits and showed that these genetic profiles are linked to vascular complications, emphasizing the role of obesity-related processes across different ancestry groups.
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  • Elevated lipoprotein(a) (Lp[a]) levels are considered a potential risk factor for atherosclerotic cardiovascular disease (ASCVD), but there is debate about the role of inflammation in this relationship.
  • The study aims to determine if Lp(a) increases cardiovascular risk independently of high-sensitivity C-reactive protein (hs-CRP) among diverse patient populations.
  • Results show that higher Lp(a) levels are associated with increased risk of major cardiovascular events, regardless of the presence of high or low hs-CRP levels, indicating that Lp(a) is a significant risk factor on its own.
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  • * It highlights how precision diagnosis through genetic testing can improve management and treatment options, as well as facilitate monitoring of at-risk family members.
  • * The authors note that while genetic testing is readily available, it's often under-utilized, and they suggest strategies for clinicians to incorporate testing into standard practice for specific cardiovascular conditions.
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Background: The reduction of low-density lipoprotein cholesterol (LDL-C) with evolocumab, a fully human monoclonal antibody inhibitor of proprotein convertase subtilisin/kexin type 9 (PCSK9i), reduces the risk of major adverse cardiovascular events in patients with established atherosclerotic cardiovascular disease (ASCVD) with a prior MI, prior stroke, or symptomatic peripheral artery disease, with no offsetting safety concerns. The effect of evolocumab on CV outcomes in lower risk patients without a history of MI or stroke has not been explored.

Study Design: VESALIUS-CV is a randomized, double-blind, placebo-controlled, global clinical trial designed to evaluate the effect of evolocumab on the risk of major cardiovascular events in patients at high cardiovascular risk but without a prior ischemic event.

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Background: Angiopoietin-like protein 3 (ANGPTL3) is a novel therapeutic target for hyperlipidemia. Vupanorsen, an antisense oligonucleotide targeting ANGPTL3, reduced triglycerides up to 57% in a phase 2b trial, but caused dose-dependent increases in hepatic fat fraction (HFF).

Objective: To determine the degree of HFF progression with escalating doses of vupanorsen, differential HFF increases in key patient subgroups, and the correlation between changes in HFF and liver enzymes.

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Importance: The clinical utility of polygenic risk scores (PRS) for coronary artery disease (CAD) has not yet been established.

Objective: To investigate the ability of a CAD PRS to potentially guide statin initiation in primary prevention after accounting for age and clinical risk.

Design, Setting, And Participants: This was a longitudinal cohort study with enrollment starting on January 1, 2006, and ending on December 31, 2010, with data updated to mid-2021, using data from the UK Biobank, a long-term population study of UK citizens.

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The discovery of genetic loci associated with complex diseases has outpaced the elucidation of mechanisms of disease pathogenesis. Here we conducted a genome-wide association study (GWAS) for coronary artery disease (CAD) comprising 181,522 cases among 1,165,690 participants of predominantly European ancestry. We detected 241 associations, including 30 new loci.

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  • Studies show that high-sensitivity troponin (hsTn) levels are linked to predicting future cardiovascular events in patients with chronic coronary syndromes, yet there’s little research on how changes in these levels over time relate to such events.
  • This analysis focuses on patients who stabilized after acute coronary syndrome (ACS) and investigates the relationship between changes in hsTnT levels at one and four months post-ACS and subsequent cardiovascular events.
  • Data from the IMPROVE-IT trial included 6,035 participants, examining the outcomes like cardiovascular death and hospitalizations, revealing the importance of monitoring hsTnT changes in post-ACS patients.
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Previous genome-wide association studies (GWASs) of stroke - the second leading cause of death worldwide - were conducted predominantly in populations of European ancestry. Here, in cross-ancestry GWAS meta-analyses of 110,182 patients who have had a stroke (five ancestries, 33% non-European) and 1,503,898 control individuals, we identify association signals for stroke and its subtypes at 89 (61 new) independent loci: 60 in primary inverse-variance-weighted analyses and 29 in secondary meta-regression and multitrait analyses. On the basis of internal cross-ancestry validation and an independent follow-up in 89,084 additional cases of stroke (30% non-European) and 1,013,843 control individuals, 87% of the primary stroke risk loci and 60% of the secondary stroke risk loci were replicated (P < 0.

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  • Accurate classification of variants' pathogenicity is essential for both research and clinical applications, showing significant connections between rare variants and specific health traits in three monogenic diseases.* -
  • Analysis of data from three large studies reveals that effect sizes linked to these health traits can effectively differentiate between pathogenic and non-pathogenic variants, with strong statistical significance (P < 0.001).* -
  • The research suggests that using these quantitative endophenotypes can identify up to 35% of rare variants of uncertain significance as potentially pathogenic, thereby enhancing our understanding of disease susceptibility.*
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  • Interest in targeted screening for atrial fibrillation (AF) is rising, but the impact of genetics on identifying at-risk patients is still uncertain.
  • A study involving over 36,000 participants revealed that a polygenic risk score (PRS) significantly predicts AF risk, with those in the top 20% of PRS being more than twice as likely to develop AF compared to those in the bottom 20%.
  • The PRS enhances risk stratification beyond traditional clinical models, increasing prediction accuracy of AF events when combined with other factors like NT-proBNP.
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Background: Genetic loss-of-function variants in are associated with lower levels of plasma lipids. Vupanorsen is a hepatically targeted antisense oligonucleotide that inhibits Angiopoietin-like 3 (ANGPTL3) protein synthesis.

Methods: Adults with non-high-density lipoprotein cholesterol (non-HDL-C) ≥100 mg/dL and triglycerides 150 to 500 mg/dL on statin therapy were randomized in a double-blind fashion to placebo or 1 of 7 vupanorsen dose regimens (80, 120, or 160 mg SC every 4 weeks, or 60, 80, 120, or 160 mg SC every 2 weeks).

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