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ACC 2026 Late-Breaking Trials
Live trial results, expert commentary, and discussion with 10+ trial authors
How do safety and clinical outcomes compare between transcatheter tricuspid edge-to-edge repair and transcatheter tricuspid valve replacement in patients with severe tricuspid regurgitation?
Result: T-TEER was associated with very low in-hospital (0.13%) and 30-day (0.46%) mortality, whereas TTVR had higher early mortality but similar 1-year mortality, achieved more complete TR elimination, but had higher rates of permanent pacemaker implantation, thrombotic events, and major bleeding.

“Real-World Outcomes of Transcatheter Tricuspid Valve Replacement https://t.co/594BIM51cc”
Comparative analysis shows similar cardiovascular outcomes in patients with AMI using bisoprolol or carvedilol, suggesting both are viable for prevention.

“In AMI patients with reduced LVEF undergoing PCI, bisoprolol and carvedilol showed comparable 3-year cardiovascular outcomes. Both are suitable options for secondary prevention. By Jun-Chang Jeong https://t.co/RfYpwnawv9 #circ_j #CardioX https://t.co/WrQyGDbODQ”
Does whole-exome sequencing identify clinically relevant genetic variants in young and middle-aged adults with pre-hospital sudden cardiac arrest?
Result: Pathogenic or likely pathogenic variants were identified in 13 individuals, corresponding to a diagnostic yield of 18.8%.
Does hypertrophic cardiomyopathy increase the risk of infective endocarditis compared to matched controls?
Result: The 5-year cumulative incidence of IE was 3.25% in the HCM group and 1.31% in controls (HR 2.62, 95% CI 2.20 to 3.12, p<0.001).
A systematic review compares heart rate control in atrial fibrillation using beta blockers and calcium channel blockers, suggesting similar efficacy with some differences.
Prospective trial evaluates shear wave elastography for detecting myocardial fibrosis in dilated cardiomyopathy, suggesting new risk stratification tools.
This research highlights Orai1's role in promoting angiogenesis after myocardial infarction, suggesting it as a therapeutic target.
Key Finding: Nonvalvular cardiovascular device infections are addressed in a new American Heart Association advisory that provides an evaluation algorithm for patients with bloodstream infections.

“Published today, Infections of Selected Nonvalvular Cardiovascular Devices: A Science Advisory from the American Heart Association. Nonvalvular CV device infections including intracardiac devices (e.g., septal closure devices, shunts), intravascular devices (e.g., stents, https://t.co/4KHI1JL4m4”
Key Finding: Adjunctive prednisolone added to standard primary treatment for Kawasaki disease did not reduce the incidence of coronary-artery lesions at 1 month after illness onset.

“なんとNEJM Randomized Trial of Adjunctive Prednisolone for Kawasaki Disease | New England Journal of Medicine https://t.co/lXJVbmWINA”
Multiregistry analysis reveals MLVH in early diagnosed pediatric patients, indicating a significant regression in some cases.