Publications by authors named "Robert Blaustein"

Aims: In the VICTORIA (Vericiguat Global Study in Subjects with Heart Failure with Reduced Ejection Fraction) trial, the soluble guanylate cyclase stimulator vericiguat reduced the risk of hospitalization for heart failure (HHF) or cardiovascular death in patients with heart failure (HF) and reduced ejection fraction (HFrEF) with recent worsening HF. The effect of vericiguat in patients with HFrEF without recent worsening HF remains unknown. The VICTOR (Vericiguat Global Study in Participants with Chronic Heart Failure) trial was designed to assess the efficacy and safety of vericiguat in patients with ejection fraction ≤40% without recent worsening HF on a background of current foundational HFrEF therapy.

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Background: In VICTORIA (Vericiguat Global Study in Subjects with Heart Failure with Reduced Ejection Fraction), participants with heart failure (HF) and reduced ejection fraction, vericiguat decreased the primary composite outcome (time to first HF hospitalization [HFH] or cardiovascular death [CVD]) (897 events) compared with placebo (972 events) (hazard ratio, 0.90; 95% confidence interval [CI], 0.82-0.

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Background: Type 2 diabetes mellitus (T2DM) significantly worsens heart failure (HF) prognosis.

Objectives: This study sought to investigate the impact of T2DM on outcomes in patients enrolled in VICTORIA and assess the efficacy of vericiguat in patients with and without T2DM.

Methods: Patients with HF with reduced ejection fraction were randomized to receive vericiguat or placebo in addition to standard therapy.

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Vericiguat is an oral soluble guanylate cyclase stimulator and enhances the cyclic guanosine monophosphate pathway independently of nitric oxide as well as synergistically in normal- and low-nitric oxide conditions. This review describes the pharmacokinetic and pharmacodynamic profile of vericiguat and summarizes the effect of vericiguat on cardiac electrophysiology and population pharmacokinetic/pharmacodynamic relationships. Vericiguat demonstrates virtually complete absorption and increased exposure with food.

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Article Synopsis
  • Patients with heart failure with reduced ejection fraction (HFrEF) and worsening heart failure events (WHFE) experience significant disease challenges and poor health results, as seen in randomized clinical trials.
  • A study called CHART-HF analyzed data from 1,000 patients within an integrated delivery network and 458 from a nationwide physician panel, showing that WHFE patients had higher risks of hospitalization and future WHFE events compared to those without WHFE.
  • The findings indicate that, despite improvements in treatments, there is still a critical need to enhance clinical outcomes for HFrEF patients experiencing WHFE.
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Article Synopsis
  • The study focused on patients with Heart Failure with reduced Ejection Fraction (HFrEF) and worsening heart failure events (WHFE), aiming to evaluate treatment patterns and medication decision-making.
  • It analyzed data from outpatient records of over 1,400 patients collected between 2017 and 2019, revealing demographic similarities but notable differences in medication adherence and dosage levels between those with and without WHFE.
  • The study concluded that there are significant gaps in the adoption of guideline-directed medical therapy (GDMT) and combination treatments among HFrEF patients, particularly those who recently experienced WHFE.
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Vericiguat, a novel soluble guanylate cyclase (sGC) stimulator, is approved for the treatment of heart failure (HF) with reduced ejection fraction (HFrEF). Decreased nitric oxide (NO) availability, sGC desensitization to NO, sGC deficiency, and reduced cyclic guanosine monophosphate (cGMP) signaling are potential contributing factors for HF disease progression. Vericiguat works via stimulation of sGC in the critical NO-sGC-cGMP pathway.

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Aims: The relationship between accelerometry data and changes in Kansas City Cardiomyopathy Questionnaire-Physical Limitation Score (KCCQ-PLS) or 6 min walk test (6MWT) is not well understood.

Methods And Results: VITALITY-HFpEF accelerometry substudy (n = 69) data were assessed at baseline and 24 weeks. Ordinal logistic regression models were used to assess the association between accelerometry activity and deterioration, improved, or unchanged KCCQ-PLS (≥8.

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Aims: Whether electrocardiographic (ECG) measurements predict mortality in chronic heart failure with reduced ejection fraction (HFrEF) is unknown.

Methods And Results: We studied 4880 patients from the Vericiguat Global Study in Subjects with Heart Failure with Reduced Ejection Fraction (VICTORIA) trial with a baseline 12-lead ECG. Associations between ECG measurements and mortality were estimated as hazard ratios (HR) and adjusted for the Meta-Analysis Global Group in Chronic Heart Failure (MAGGIC) risk score, N-terminal pro-B-type natriuretic peptide, and index event.

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Article Synopsis
  • The study investigated how age and sex affect treatment and outcomes for heart failure patients, focusing on a group of over 5,000 individuals from the VICTORIA trial.
  • It found that older patients (≥75 years) had more severe symptoms and worse kidney function but used less intensive therapy compared to younger patients.
  • Interestingly, despite receiving less treatment, elderly women had better outcomes than men, and the effects of vericiguat were consistent across different ages and sexes.
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Background: Selecting high-risk patients with heart failure with potentially modifiable cardiovascular events is a priority. Our objective was to evaluate NT-proBNP (N-terminal pro-B-type natriuretic peptide) changes during a 30-day screening to establish (1) the frequency and direction of changes; (2) whether a relationship exists between changes in NT-proBNP and the primary composite outcome of cardiovascular death and heart failure hospitalization; and (3) whether changes in NT-proBNP relate to vericiguat's clinical benefit.

Methods: VICTORIA (A Study of Vericiguat in Participants With Heart Failure With Reduced Ejection Fraction) randomized 5050 patients with heart failure with reduced ejection fraction and a recent worsening heart failure event.

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Background: Vericiguat reduced the risk of cardiovascular death (CVD) or hospitalization for heart failure (HF) in patients with worsening HF and reduced left ventricular ejection fraction (LVEF).

Objectives: The authors assessed the association of LVEF with biomarker levels, risk of outcome, and whether the effect of vericiguat was homogeneous across LVEF in the VICTORIA (Vericiguat Global Study in Subjects with Heart Failure With Reduced Ejection Fraction) trial.

Methods: Patients were grouped by LVEF tertiles (≤24%, 25%-33%, and >33%).

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Vericiguat and its metabolite M-1 were assessed for proarrhythmic risk in nonclinical in vitro and in vivo studies. In vitro manual voltage-clamp recordings at room temperature determined the effect of vericiguat on human Ether-a-go-go Related Gene (hERG) K channels. Effects of vericiguat and M-1 on hERG K, Nav1.

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Background: The association between frailty and health status in patients with heart failure with preserved ejection fraction (HFpEF) is not well known.

Objectives: The authors examined the association between: 1) patient-reported frailty, measured by the Fried frailty phenotype, Kansas City Cardiomyopathy Questionnaire Physical Limitation Score (KCCQ-PLS), 6-minute walking distance (6MWD), and other baseline characteristics; 2) baseline frailty compared with KCCQ-PLS and 24-week 6MWD; 3) frailty and changes in KCCQ-PLS and 6MWD; and 4) vericiguat and frailty at 24 weeks.

Methods: In a post hoc analysis, patients in the VITALITY-HFpEF (Patient-reported Outcomes in Vericiguat-treated Patients With HFpEF) trial were categorized as not frail (0 symptoms), prefrail (1-2 symptoms), and frail (≥3 symptoms) according to patient-reported number of frailty symptoms.

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Background: Circulating biomarkers may be useful in understanding prognosis and treatment efficacy in heart failure with reduced ejection fraction. In the VICTORIA (Vericiguat Global Study in Subjects with Heart Failure with Reduced Ejection Fraction) trial, vericiguat, a soluble guanylate cyclase stimulator, decreased the primary outcome of cardiovascular death or heart failure hospitalization in heart failure with reduced ejection fraction. We evaluated biomarkers of cardiac injury, inflammation, and renal function for associations with outcomes and vericiguat treatment effect.

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Patients with heart failure with reduced ejection fraction (HFrEF) have a high residual risk of adverse outcomes, even when treated with optimal guideline-directed medical therapy and in a clinically stable state. Soluble guanylate cyclase (sGC) stimulators have the potential to lower this risk by modifying the nitric oxide-sGC-cyclic guanosine monophosphate cascade - a pathophysiological pathway that has been targeted with limited success in HFrEF previously. Vericiguat, an sGC stimulator, was shown to improve outcomes in patients with HFrEF in the VICTORIA (Vericiguat Global Study in Subjects with Heart Failure with Reduced Ejection Fraction) trial.

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Background: The effect of vericiguat on sequential N-terminal pro-B-type natriuretic peptide (NT-proBNP) levels and influence of this relationship on clinical outcomes is unknown.

Objectives: This study assessed the relationship between changes in NT-proBNP and the primary outcome (cardiovascular death or heart failure hospitalization); evaluated the effect of vericiguat on changes in NT-proBNP; and explored the association between the efficacy of vericiguat and changes in NT-proBNP.

Methods: NT-proBNP was measured at randomization and at 16, 32, 48, and 96 weeks in 4,805 of 5,050 patients.

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Vericiguat, a novel stimulator of soluble guanylate cyclase (sGC), is indicated for the treatment of patients following a hospitalization for heart failure or need for outpatient intravenous diuretics, with symptomatic chronic heart failure and ejection fraction less than 45%. Pharmacokinetic (PK) data from the phase II trial SOCRATES-REDUCED (Soluble Guanylate Cyclase Stimulator in Heart Failure Study) and the phase III trial VICTORIA (Vericiguat Global Study in Patients With Heart Failure With Reduced Ejection Fraction) were used to characterize vericiguat PK. A total of 8,092 concentration records from 2,321 participants (362 from SOCRATES-REDUCED and 1,959 from VICTORIA) were utilized for the development of the population PK model.

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Article Synopsis
  • The study evaluated the impact of vericiguat versus placebo on health status in heart failure patients, focusing on the Kansas City Cardiomyopathy Questionnaire (KCCQ) over 32 weeks.
  • Results indicated no significant difference in KCCQ score improvements between the vericiguat and placebo groups, although both groups saw a similar median improvement in clinical summary scores after 16 weeks.
  • Vericiguat did lower the risk of cardiovascular death or hospitalizations for heart failure consistently across different baseline health statuses, but overall health status as measured by KCCQ remained unchanged compared to placebo.
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Background: Patients with heart failure with reduced ejection fraction (HFrEF) and worsening HF events (WHFE) represent a distinct subset of patients with a substantial comorbidity burden, greater potential for intolerance to medical therapy, and high risk of subsequent death, hospitalization and excessive healthcare costs. Although multiple therapies have been shown to be efficacious and safe in this high-risk population, there are limited real-world data regarding factors that impact clinical decision-making when initiating or modifying therapy. Likewise, prior analyses of US clinical practice support major gaps in medical therapy for HFrEF and few medication changes during longitudinal follow-up, yet granular data on reasons why clinicians do not initiate or up-titrate guideline-directed medication are lacking.

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Aims: Clinically important thresholds in patient-reported outcomes measures like the Kansas City Cardiomyopathy Questionnaire (KCCQ) have not been defined for patients with heart failure and preserved ejection fraction (HFpEF). The aim of this study was to estimate meaningful thresholds for improvement or worsening in the KCCQ physical limitation score (PLS) in patients with HFpEF.

Methods And Results: In this pre-specified analysis from VITALITY-HFpEF, anchor- and distribution-based approaches were used to estimate thresholds for improvement or worsening in the KCCQ-PLS using Patient Global Impression of Change (PGIC) as an anchor.

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Article Synopsis
  • * Among the 5048 patients analyzed, those with CAD were generally older, predominantly male, and had higher rates of existing conditions like diabetes, as well as a greater need for advanced heart treatment options.
  • * Results showed that patients with CAD had higher rates of cardiovascular death and heart failure hospitalization compared to those without CAD, but vericiguat treatment was found to be effective and safe for both groups.
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Cholesteryl ester transfer protein (CETP) represents one of the key regulators of the homeostasis of lipid particles, including high-density lipoprotein (HDL) and low-density lipoprotein (LDL) particles. Epidemiological evidence correlates increased HDL and decreased LDL to coronary heart disease (CHD) risk reduction. This relationship is consistent with a clinical outcomes trial of a CETP inhibitor (anacetrapib) combined with standard of care (statin), which led to a 9% additional risk reduction compared to standard of care alone.

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Importance: Patients with heart failure and preserved ejection fraction (HFpEF) are at high risk of mortality, hospitalizations, and reduced functional capacity and quality of life.

Objective: To assess the efficacy of the oral soluble guanylate cyclase stimulator vericiguat on the physical limitation score (PLS) of the Kansas City Cardiomyopathy Questionnaire (KCCQ).

Design, Setting, And Participants: Phase 2b randomized, double-blind, placebo-controlled, multicenter trial of 789 patients with chronic HFpEF and left ventricular ejection fraction 45% or higher with New York Heart Association class II-III symptoms, within 6 months of a recent decompensation (HF hospitalization or intravenous diuretics for HF without hospitalization), and with elevated natriuretic peptides, enrolled at 167 sites in 21 countries from June 15, 2018, through March 27, 2019; follow-up was completed on November 4, 2019.

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Background: During the development of an investigational new drug, identifying potential safety risks is imperative. Early detection, as well as federal regulations, requires safety monitoring procedures during clinical trials while the data are still blinded.

Method: We introduce a Bayesian meta-analytic approach for detecting a potential elevated safety risk conferred by an investigational treatment, as compared to control, using blinded data from multiple trials.

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