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In heart failure patients with diabetes and/or chronic kidney disease, a new, non-steroidal mineralocorticoid receptor antagonist (MRA) called finerenone was no more effective than the currently approved MRA eplerenone in reducing the heart failure biomarker N-terminal pro-B-type natriuretic peptide [NT-proBNP].
EMBARGO 31 August 2015 at 08:00 BST
STUDY NAME: The ARTS-HF Trial
SESSION NAME: Hot Line III - Diabetes Mellitus/Pharmacology
But results of the ARTS-HF trial, presented today at ESC Congress 2015, suggest that “finerenone may offer more pronounced end-organ protection than eplerenone,” said Gerasimos Filippatos, MD, the study’s principal investigator.
“While finerenone was not superior for the primary outcome of our study, it was more effective than eplerenone for the secondary composite endpoint of death from any cause, cardiovascular hospitalisations, or emergency presentations for worsening heart failure,” said Professor Filippatos, from Athens University Hospital Attikon in Athens, Greece.
“We were somewhat surprised by this striking reduction in CV events , especially mortality in the finerenone 10-20 mg group, which appears to be the optimal dose,” he said. “Preclinical studies have shown that finerenone provides greater cardiac protection and has different binding to the receptor than eplerenone and this could be the mechanism for more pronounced organ protection that could explain better outcome. If confirmed in further, adequately powered, large scale prospective, randomized studies, this could have important public health and health cost implications.”
ARTS-HF, which stands for (minerAlocorticoid Receptor antagonist Tolerability Study-Heart Failure) included 1,055 patients, mean age 71 years, who presented to the emergency department with worsening heart failure and type 2 diabetes mellitus (T2DM), and/or chronic kidney disease (CKD).
Patients were randomised into six groups, one group receiving eplerenone, and the other five groups receiving different doses of finerenone for 90 days.
The primary endpoint was the percentage of individuals with more than a 30% decrease in plasma NT-proBNP from baseline to day 90, with a composite clinical secondary endpoint of death from any cause, cardiovascular (CV) hospitalisations, or emergency presentation for worsening chronic heart failure. Changes in health related quality of life (QOL) were also measured.
Dosing of all medications was up-titrated through the study period. The eplerenone group started with a dose of 25 mg every other day, increasing to 25 mg daily on Day 30, with up-titration to 50 mg daily by Day 60.
The finerenone groups started with 2.5 mg, 5 mg, 7.5 mg, 10 mg or 15 mg daily, 5mg, 10mg, 15mg, 20mg and 20 mg respectively on Day 30, provided that blood potassium remained at or below 5.0 mmol/L.
By Day 90, a similar percentage of patients in each group had achieved the primary endpoint of more than a 30% decrease in plasma NT-proBNP (37.2% in the eplerenone arm compared to and 30.9%, 32.5%, 37.3%, 38.8% and 34.2% in each of the finerenone dose groups).
The secondary composite clinical endpoint occurred less frequently in all patients treated with finerenone (except for the lowest dose ) compared with the eplerenone-treated patients, with the greatest risk reduction in the finerenone-treated patients who started at 10 mg daily (HR 0.56; nominal P= 0.0157).
Individual secondary endpoints were also decreased in the finerenone compared to eplereonone groups, including of CV hospitalization (HR 0.56; P= 0.0229), all-cause death (P= 0.0262) and CV death (P=0.0108) and patient-reported QOL was also consistently better with finerenone at starting doses of 7.5 and 10mg daily compared with the eplerenone group.
Adverse events, including those leading to study drug discontinuation, were similar between both groups, and postassium elevations of 5.6 mmol/L or more occurred at equal rates in both groups (4.3%).
Finerenone is highly cardio selective compared to Eplerenone: preclinical studies have shown that Finerenone provides greater cardiac protection than Eplerenone – This can in part be explained by the difference in bio distribution of Finerenone and Eplerenone.
Eplerenone, as well as spironolactone distribute several fold greater to the kidneys than the heart - whereas Finerenone is equally distributed to the kidney and heart –thereby providing relatively greater cardiac vs renal protection. The greater reduction in Cv events with Finerenone in our study we believe can in part be attributed to this more favorable distribution of Finerenone as well as differences in its mode of binding to the MR compared to Eplerenone.
SOURCES OF FUNDING: The study was sponsored by Bayer.
DISCLOSURES: Dr. Filippatos has served as an advisor to Bayer HealthCare AG.
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About the European Society of CardiologyThe European Society of Cardiology (ESC) represents more than 90 000 cardiology professionals across Europe and worldwide. Its mission is to reduce the burden of cardiovascular disease in Europe. About ESC Congress 2015ESC Congress is the world’s largest and most influential cardiovascular event contributing to global awareness of the latest clinical trials and breakthrough discoveries. ESC Congress 2015 takes place 29 August to 2 September at ExCel London in London, UK. Access the scientific programme. More information is available from the ESC Press Office at firstname.lastname@example.org.To access all the scientific resources from the sessions during the congress, visit ESC Congress 365. This press release accompanies both a presentation and an ESC press conference at the ESC Congress 2015. Edited by the ESC from material supplied by the investigators themselves, this press release does not necessarily reflect the opinion of the European Society of Cardiology. The content of the press release has been approved by the presenter.
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