Background: Patients with heart failure (HF) are limited by symptoms and have impaired quality of life. The Kansas City Cardiomyopathy Questionnaire (KCCQ) is a patient-reported outcome measure that enables evaluation of the effect of HF and the impact of new therapies on health status in patients with HF., Objectives: This prespecified analysis of FINEARTS-HF (Finerenone Trial to Investigate Efficacy and Safety Superior to Placebo in Patients With Heart Failure) assessed the efficacy and safety of finerenone according to baseline KCCQ Total Symptom Score (TSS) and the effect of finerenone on KCCQ-TSS., Methods: FINEARTS-HF tested the efficacy of the nonsteroidal mineralocorticoid receptor antagonist (MRA) finerenone, compared with placebo, in patients with HF with mildly reduced ejection fraction/preserved ejection fraction. The primary endpoint was the composite of cardiovascular death and total worsening HF events. The KCCQ was completed by patients at randomization and at 6, 9, and 12 months after randomization. Change in KCCQ-TSS was a key secondary endpoint. Patients were stratified by KCCQ-TSS tertiles at baseline. The association between KCCQ tertile and clinical outcomes was evaluated using semiparametric proportional-rates models for total events and Cox models for time-to-first-event data, and the effects of finerenone vs placebo on the primary endpoint were assessed across tertiles of KCCQ-TSS., Results: Of the 6,001 participants in FINEARTS-HF, 5,986 (99.8%) had baseline KCCQ-TSS recorded (median score 69.8 of a possible 100; higher score = better health status). Lower (worse) KCCQ-TSS was associated with a higher risk of the primary endpoint. Finerenone, compared with placebo, reduced the risk of the primary endpoint across the range of KCCQ-TSS: tertile 1 (score 0-<57): RR: 0.82 (95% CI: 0.68-1.00); tertile 2 (57-<81): 0.88 (95% CI: 0.70-1.11); tertile 3 (81-100): 0.88 (95% CI: 0.69-1.14) (P interaction = 0.89). Compared with placebo, finerenone significantly improved KCCQ-TSS from baseline with a mean difference at 12 months of 1.62 points (95% CI: 0.69-2.56 points) (P < 0.001). Numerically fewer finerenone-treated patients experienced clinically meaningful deterioration, and more had improvements in KCCQ-TSS., Conclusions: Finerenone significantly reduced HF events and improved health status in patients with HF and mildly reduced ejection fraction/preserved ejection fraction across the spectrum of KCCQ-TSS at baseline. (Study to Evaluate the Efficacy [Effect on Disease] and Safety of Finerenone on Morbidity [Events Indicating Disease Worsening] & Mortality [Death Rate] in Participants With Heart Failure and Left Ventricular Ejection Fraction [Proportion of Blood Expelled Per Heart Stroke] Greater or Equal to 40% [FINEARTS-HF], NCT04435626; Finerenone Trial to Investigate Efficacy and Safety Superior to Placebo in Patients with Heart Failure; EudraCT 2020-000306-29)., Competing Interests: Funding Support and Author Disclosures The FINEARTS-HF trial was funded by Bayer. Dr Yang has received Global CardioVascular Clinical Trialists (CVCT) Young Trialist Grant and travel grants from AstraZeneca and Bayer. Dr Atherton has received other support from Bayer, during the conduct of the study; and has received other support from AstraZeneca, Bayer, Boehringer Ingelheim, Bristol Myers Squibb, Eli Lilly, Novo Nordisk, Vifor Pharma, and Merck Sharp and Dome, outside of the submitted work. Dr Chiang has received personal fees from AstraZeneca, Boehringer Ingelheim, Daiichi-Sankyo, Eli Lilly, Menarini, Merck Sharp and Dohme, Novartis, Pfizer, and Sanofi. Dr Chopra has received modest speaker fees from Boehringer, AstraZeneca, Novartis, Pfizer, Novo Nordisk, Glenmark, Sun, Mankind, Lupin, Alembic, JB, Reddy’s, Intas, Eris, and Cipla, outside of the submitted work. Dr Comin-Colet has received personal fees from Bayer, during the conduct of the study; has received grants from Novartis, Vifor Pharma, AstraZeneca, and Orion Pharma; and has received personal fees from Bayer, Boehringer Ingelheim, Vifor Pharma, Novartis, AstraZeneca, and Orion Pharma, outside the submitted work. Dr Kosiborod has received research grant support from AstraZeneca, Boehringer Ingelheim, and Pfizer; has served as a consultant or on an advisory board for Alnylam, Amgen, Applied Therapeutics, Arrowhead Pharmaceuticals, AstraZeneca, Bayer, Boehringer Ingelheim, Corcept Therapeutics, Cytokinetics, Eli Lilly, Esperion Therapeutics, Janssen, Lexicon, Merck (Diabetes and Cardiovascular), Novo Nordisk, Pfizer, Pharmacosmos, Sanofi, and Vifor Pharma; has received other research support from AstraZeneca and Vifor; and has received honoraria from AstraZeneca, Boehringer Ingelheim, and Novo Nordisk. Dr Saraiva has received grants or fees for working on clinical trials, consultancy, advisory board or steering committee membership, and other activities from AstraZeneca, Novo Nordisk, Bayer, Boehringer Ingelheim, Novartis, Merck Sharp and Dohme, and Janssen. Dr Claggett has received personal consulting fees from Alnylam, Bristol Myers Squibb, Cardior, Cardurion, Corvia, CVRx, Eli Lilly, Intellia, and Rocket; and has served on a data safety monitoring board for Novo Nordisk. Dr Desai has received institutional research grants (to Brigham and Women’s Hospital) from Abbott, Alnylam, AstraZeneca, Bayer, Novartis, and Pfizer; and has received personal consulting fees from Abbott, Alnylam, AstraZeneca, Bayer, Biofourmis, Boston Scientific, Medpace, Medtronic, Merck, Novartis, Parexel, Porter Health, Regeneron, River2Renal, Roche, Veristat, Verily, and Zydus. Dr Lam has received research support from Novo Nordisk and Roche Diagnostics; has received consulting fees from Alleviant Medical, Allysta Pharma, AnaCardio AB, Applied Therapeutics, AstraZeneca, Bayer, Biopeutics, Boehringer Ingelheim, Boston Scientific, Bristol Myers Squibb, CardioRenal, CPC Clinical Research, Eli Lilly, Impulse Dynamics, Intellia Therapeutics, Ionis Pharmaceutical, Janssen Research and Development LLC, Medscape/WebMD Global LLC, Merck, Novartis, Novo Nordisk, Prosciento Inc, Quidel Corporation, Radcliffe Group Ltd, Recardio Inc, ReCor Medical, Roche Diagnostics, Sanofi, Siemens Healthcare Diagnostics, and Us2.ai; and is a cofounder and non-executive director of Us2.ai. Dr Senni has served on advisory boards for, served as a consultant for, and received honoraria from Novartis, Abbott, Merck, Merck Sharp and Dohme, Vifor, AstraZeneca, Cardurion, Novo Nordisk, Bayer, and Boehringer Ingelheim. Dr Shah has received research grants from National Institutes of Health (U54 HL160273, X01 HL169712, R01 HL140731, R01 HL149423), AHA (24SFRNPCN1291224), AstraZeneca, Corvia, and Pfizer; and has received consulting fees from Abbott, Alleviant, AstraZeneca, Amgen, Aria CV, Axon Therapies, Bayer, Boehringer Ingelheim, Boston Scientific, Bristol Myers Squibb, Cyclerion, Cytokinetics, Edwards Lifesciences, Eidos, Imara, Impulse Dynamics, Intellia, Ionis, Lilly, Merck, MyoKardia, Novartis, Novo Nordisk, Pfizer, Prothena, Regeneron, Rivus, Sardocor, Shifamed, Tenax, Tenaya, and Ultromics. Dr Voors’ employer has received consultancy fees and/or research support from Adrenomed, Anacardio, AstraZeneca, Bayer AG, Bristol Myers Squibb, Boehringer Ingelheim, Corteria, EliLilly, Merck, Moderna, Novartis, Novo Nordisk, Roche Diagnostics, and SalubrisBio. Dr Zannad has received personal fees from 89Bio, Abbott, Acceleron, Applied Therapeutics, Bayer, Betagenon, Boehringer, Bristol Myers Squibb, CVRx, Cambrian, Cardior, Cereno Pharmaceutical, Cellprothera, CEVA, Inventiva, KBP, Merck, Novo Nordisk, Owkin, Otsuka, Roche Diagnostics, Northsea, and USa2; has stock options at G3Pharmaceutical; has equities at Cereno, Cardiorenal, and Eshmoun Clinical research; and is the founder of Cardiovascular Clinical Trialists. Dr Pitt is a consultant for Bayer, AstraZeneca, Boehringer Ingelheim, Lexicon, Bristol Myers Squibb, KBP Biosciences, Sarfez Pharmaceuticals, Pharmaceuticals, SQinnovations, G3 Pharmaceuticals, Sea Star medical, Vifor Prointel, and Brainstorm Medical; has stock/stock options in KBP Biosciences, Sarfez Pharmaceuticals, Pharmaceuticals, SQinnovations, G3 Pharmaceuticals, Sea Star medical, Vifor Prointel, and Brainstorm Medical; and has U.S. Patent 9931412-site specific delivery of eplerenone to the myocardium, U.S. Patent pending 63/045,783 Histone modulating agents for the prevention and treatment of organ failure. Dr Vaduganathan has received research grant support, served on advisory boards, or had speaker engagements with American Regent, Amgen, AstraZeneca, Bayer AG, Baxter Healthcare, BMS, Boehringer Ingelheim, Chiesi, Cytokinetics, Fresenius Medical Care, Idorsia Pharmaceuticals, Lexicon Pharmaceuticals, Merck, Milestone Pharmaceuticals, Novartis, Novo Nordisk, Pharmacosmos, Relypsa, Roche Diagnostics, Sanofi, and Tricog Health; and participates on clinical trial committees for studies sponsored by AstraZeneca, Galmed, Novartis, Bayer AG, Occlutech, and Impulse Dynamics. Drs Jhund and McMurray are supported by a British Heart Foundation Centre of Research Excellence Grant RE/18/6/34217 and the Vera Melrose Heart Failure Research Fund. Dr Jhund has received speakers’ fees from AstraZeneca, Novartis, Alkem Metabolics, ProAdWise Communications, and Sun Pharmaceuticals; has received advisory board fees from AstraZeneca, Boehringer Ingelheim, and Novartis; has received research funding from AstraZeneca, Boehringer Ingelheim, Analog Devices Inc, and Roche Diagnostics; his employer, the University of Glasgow, has been remunerated for clinical trial work from AstraZeneca, Bayer AG, Novartis, and Novo Nordisk; and is Director of GCTP Ltd. Dr Solomon has received research grants from Alexion, Alnylam, AstraZeneca, Bellerophon, Bayer, Bristol Myers Squibb, Boston Scientific, Cytokinetics, Edgewise, Eidos, Gossamer, GlaxoSmithKline, Ionis, Lilly, MyoKardia, National Institutes of Health/NHLBI, Novartis, Novo Nordisk, Respicardia, Sanofi Pasteur, Theracos, and US2.AI; and has consulted for Abbott, Action, Akros, Alexion, Alnylam, Amgen, Arena, AstraZeneca, Bayer, Boehringer Ingelheim, Bristol Myers Squibb, Cardior, Cardurion, Corvia, Cytokinetics, Daiichi-Sankyo, GlaxoSmithKline, Lilly, Merck, Myokardia, Novartis, Roche, Theracos, Quantum Genomics, Janssen, Cardiac Dimensions, Tenaya, Sanofi-Pasteur, Dinaqor, Tremeau, CellProThera, Moderna, American Regent, Sarepta, Lexicon, Anacardio, Akros, and Valo. Dr McMurray has received payments through Glasgow University from work on clinical trials, as well as consulting fees and grants from Amgen, AstraZeneca, Bayer, Cardurion, Cytokinetics, GlaxoSmithKline, Novartis, British Heart Foundation, National Institute for Health–National Heart, Lung, and Blood Institute, Boehringer Ingelheim, SQ Innovations, and Catalyze Group; has received personal consultancy fees from Alnylam Pharmaceuticals, Amgen, AnaCardio, AstraZeneca, Bayer, Berlin Cures, Bristol Myers Squibb, Cardurion, Cytokinetics, Ionis Pharmaceuticals, Novartis, Regeneron Pharmaceuticals, and River 2 Renal Corp; has received personal lecture fees from Abbott, Alkem Metabolics, AstraZeneca, Blue Ocean Scientific Solutions Ltd, Boehringer Ingelheim, Canadian Medical and Surgical Knowledge, Emcure Pharmaceuticals Ltd, Eris Lifesciences, European Academy of CME, Hikma Pharmaceuticals, Imagica Health, Intas Pharmaceuticals, J.B. Chemicals and Pharmaceuticals Ltd, Lupin Pharmaceuticals, Medscape/Heart.Org, ProAdWise Communications, Radcliffe Cardiology, Sun Pharmaceuticals, The Corpus, Translation Research Group, Translational Medicine Academy; has served on the Data Safety Monitoring Board for WIRB-Copernicus Group Clinical Inc; and is a director of Global Clinical Trial Partners Ltd. Drs. Kolkhof, Viswanathan, Lage, and Rohwedder are employees of Bayer. All other authors have reported that they have no relationships relevant to the contents of this paper to disclose., (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)