JACC Global

Hosts Mitsuaki Sawano, MD, Kentaro Ejiri, MD, Hiroyuki Sato, MD, and Shun Kosaka, MD welcome Dr. Kosuke Nakasuka, MD, PhD to discuss his JACC study, Sudden Cardiac Death Due to Myocardial Infarction With Obstructive and Nonobstructive Coronary Arteries. Using one of the world's most comprehensive population-based autopsy cohorts, this study challenges a decades-old assumption that myocardial infar...

Hosts Mitsuaki Sawano, MD, Nobuhiro Ikemura, MD, and Satoshi Shoji, MD welcome Takahito Doi, MD, PhD to discuss his JACC Brief Report, “Risk of Atherosclerotic Cardiovascular Disease in Familial Remnant Hyperlipidemia and Familial Hypercholesterolemia.” Using prospective population cohorts from Copenhagen and the UK Biobank, this study examined whether familial remnant hyperlipidemia, historically...

Hosts Mitsuaki Sawano, MD, Kentaro Ejiri, MD, and Hiroyuki Sato, MD welcome Tomoya Iwawaki, MD and Satoshi Yanagisawa, MD to discuss their JACC: Clinical Electrophysiology study, “Optimal Timing for Oral Anticoagulant Discontinuation and Prognosis After Successful Catheter Ablation for Atrial Fibrillation.” Using data from 2,448 patients undergoing first-time AF ablation, the investigators perform...

Hosts Mitsuaki Sawano, MD, and Shun Kohsaka, MD welcome Dr. Suguru Araki, MD and Dr. Satoshi Nakamura, MD (Mie University) to discuss their JACC: Cardiovascular Imaging study, “Validation of Ultra-Low-Dose Coronary Artery Calcium Scoring Using Photon-Counting Computed Tomography.” As cardiac CT becomes increasingly central to cardiovascular diagnosis and prevention, radiation exposure remains an i...

Hosts Mitsuaki Sawano, MD, and Satoshi Shoji, MD welcome Dr. Kazuya Nagao, MD (Kyoto University) to discuss his JACC: Heart Failure study, “Multidimensional Patient-Reported Outcomes in Acutely Decompensated Heart Failure: Prognostic Implications in a Real-World Cohort.” Using JROADHF-NEXT, this study examined three different PRO tools—KCCQ, EQ-5D-5L LSS, and PHQ-9—in patients hospitalized with ac...

Hosts Mitsuaki Sawano, MD, Shun Kohsaka, and Nobuhiro Ikemura welcome Dr. Takahiro Suzuki, MD to discuss his JACC: Cardiovascular Interventions study, “Nonfatal Adverse Events and Risk for Subsequent Mortality in Patients Undergoing Percutaneous Coronary Intervention.” Using the multicenter Japanese JCD-KiCS PCI registry, the study examined how post-PCI nonfatal events—including heart failure hosp...

Hosts Mitsuaki Sawano, MD, Kentaro Ejiri, MD, and Nobuhiro Ikemura, MD welcome Dr. Yasuhiro Hamatani, MD (Brigham and Women’s Hospital) to discuss his study, “Interchangeability of the KCCQ-12 and KCCQ-23 across >18,000 Participants Enrolled in 4 Large-Scale Trials of Heart Failure.” Using pooled patient-level data from TOPCAT, PARAGON-HF, DELIVER, and FINEARTS-HF, this study examined whether the...

Hosts Mitsuaki Sawano, MD, and Satoshi Shoji, MD welcome Dr. Keisuke Usuda, MD (Massachusetts General Hospital / Broad Institute of MIT and Harvard) to discuss his JACC: Clinical Electrophysiology study, “Electrocardiogram-Based Artificial Intelligence to Predict Recurrence After Cardioversion for Newly Diagnosed Atrial Fibrillation.” Using a large electronic health record cohort of patients under...

Hosts Mitsuaki Sawano, MD, Kentaro Ejiri, MD, and Nobuhiro Ikemura, MD welcome Dr. Nahoko Kato, MD, PhD (Tokyo Bay Urayasu Ichikawa Medical Center) and Dr. Hiroyuki Okura, MD, PhD (Gifu University) to discuss their JACC study, “Mitral Annular Calcification-Related Mitral Stenosis: 5-Year Outcomes and Prognostic Determinants in the JAMAC Study.” Using multicenter Japanese data from the JAMAC Study,...

Hosts Mitsuaki Sawano, MD, Satoshi Shoji, MD, Nobuhiro Ikemura, MD, and Hiroyuki Sato, MD welcome Dr. Tasuku Yamamoto, MD (Cleveland Clinic) to discuss his JACC: Clinical Electrophysiology study, “Neurocognitive Function, Cerebral Blood Flow, and Hippocampal Volume After Catheter Ablation of Atrial Fibrillation.” Using detailed digital cognitive testing with CANTAB alongside brain MRI in a prospec...

Hosts Mitsuaki Sawano, MD, and Shun Kohsaka, MD, welcome Dr. Yugo Yamashita, MD (Kyoto University) to discuss the newly released 2026 AHA/ACC Guideline for Acute Pulmonary Embolism and its accompanying JACC commentary from an Asia-Pacific perspective. This special episode first breaks down the major updates in the guideline, including the new A-to-E clinical classification, outpatient management o...

Hosts Mitsuaki Sawano, MD, welcome Dr. Yuki Kawashima, MD and Dr. Ryo Inuzuka, MD (The University of Tokyo) to discuss their JACC study on how genetic variants in FBN1 can predict the timing and risk of mitral valve surgery in Marfan syndrome. Using one of the world’s largest longitudinal Marfan cohorts, the study shows that not all mutations carry equal risk: specific in-frame variants within the...

Hosts Mitsuaki Sawano, MD, Shun Kohsaka, MD, and Nobuhiro Ikemura, MD welcome Dr. Yuichi J. Shimada (Columbia University) to discuss his ACC presentation on plasma microRNA profiling in hypertrophic cardiomyopathy (HCM). In this episode, we explore how transcriptomic analysis of 1,600+ circulating microRNAs in 280 patients identified three distinct molecular subtypes of HCM, each associated with d...

Hosts Mitsuaki Sawano, MD, Shun Kohsaka, MD, and Nobuhiro Ikemura, MD welcome Dr. Ryohei Ono, MD, PhD (University of Glasgow / Chiba University) to discuss his simultaneously published JACC study analyzing over 23,000 patients from global HFrEF trials. Once considered regional, Chagas cardiomyopathy is now a global concern. This episode highlights its consistently higher risks of cardiovascular de...

Hosts Mitsuaki Sawano, MD, Kentaro Ejiri, MD, and Nobuhiro Ikemura, MD welcome Dr. Kanna Nakamura, MD and Dr. Yugo Yamashita, MD (Kyoto University) to discuss their Late Breaking Clinical Cohort presented at the 2026 JCS in Fukuoka, exploring venous thromboembolism (VTE) risk prediction in cancer patients using comprehensive genomic profiling. In a cohort of patients undergoing cancer genomic pane...

Hosts Mitsuaki Sawano, MD, and Kentaro Ejiri, MD welcome Dr. Yusuke Watanabe, MD (Teikyo University) to discuss his study from the OCEAN-TAVI Registry, examining the long-term impact of mild paravalvular regurgitation (PVR) after TAVR. In over 5,000 patients with up to 9 years of follow-up, mild PVR—traditionally considered clinically acceptable—was associated with higher risks of all-cause mortal...

Hosts Mitsuaki Sawano, MD, Nobuhiro Ikemura, MD, and Satoshi Shoji, MD welcome Dr. Ryohei Ono, MD, PhD (BHF Cardiovascular Research Centre, University of Glasgow / Chiba University) to discuss his JACC: Heart Failure study, “Lactate Dehydrogenase and Outcomes in Patients With HFrEF: Insights From GALACTIC-HF.” The episode explores how LDH—one of the most commonly measured laboratory tests—may be a...

Hosts Mitsuaki Sawano, MD, and colleagues welcome Dr. Yusuke Kobari, MD, PhD (Heart Center, Copenhagen) to discuss his recent publication in JACC: Cardiovascular Interventions, “Clinical Application of Guideline-Directed Medical Therapy in TAVR Patients With Heart Failure and Reduced Ejection Fraction.” Among 336 patients with LVEF ≤40%, most were eligible for quadruple HF therapy, yet only 27% re...

Hosts Mitsuaki Sawano, MD, Nobu Ikemura, MD, and Satoshi Shoji, MD welcome Dr. Shingo Matsumoto, MD (Toho University) and Dr. Yohei Ohno, MD (Tokai University) to discuss their JACC: Cardiovascular Interventions study, “Atrial Fibrillation and Tricuspid Regurgitation in Patients Undergoing Mitral Valve Transcatheter Edge-to-Edge Repair.” Building on prior evidence that residual tricuspid regurgita...

Hosts Mitsuaki Sawano, MD, and Satoshi Shoji, MD welcome Dr. Tomonari Harada, MD, PhD (Mayo Clinic / Gunma University) with commentary from Dr. Masaru Obokata, MD (Gunma University) to discuss their JACC study, “Echocardiographic Diastolic Function Grading in HFpEF: Testing the Updated 2025 ASE Criteria.” This investigation applies the newly updated 2025 ASE diastolic function grading algorithm to...

Hosts Mitsuaki Sawano, MD, and Kentaro Ejiri, MD, welcome Dr. Yusuke Nakashima, MD (Yamaguchi University) and Prof. Shigeki Kobayashi , MD(Yamaguchi University) to discuss their study published in JACC: Cardiovascular Imaging, exploring prognostic markers in patients with cardiac sarcoidosis following steroid therapy. Focusing on a condition in which clinical stability does not always equate to lo...

Hosts Mitsuaki Sawano, MD, and Satoshi Shoji, MD welcome Dr. Shun Kohsaka, MD (Keio University School of Medicine) and Prof. Noboru Motomura, MD (Toho University Sakura Medical Center) to discuss their JACC study examining nationwide trends in coronary revascularization across Japan. Using two of the country’s largest all-Japan registries—the J-PCI registry and the JCVSD—this analysis tracks how P...

Host Mitsuaki Sawano welcomes Dr. Sachiyo Ono, MD (Department of Cardiology, Kurashiki Central Hospital; Minneapolis Heart Institute Foundation International Scholar) to discuss her JACC: Clinical Electrophysiology study from the OCEAN-LAAC registry. Focusing on patients undergoing Left Atrial Appendage Closure, this episode explores how Spontaneous Echo Contrast (SEC)—particularly when combined w...

Hosts Mitsuaki Sawano, MD, Kentaro Ejiri, MD, Nobu Ikemura, MD, and Satoshi Shoji, MD welcome Dr. Shu Hirata, MD (Department of Cardiology, Nihon University Itabashi Hospital), with guest commentary from Dr. Hiroyuki Sato, MD (Tohoku University), to discuss the REHEALTH-AF Study published in JACC: Clinical Electrophysiology. Focusing on patients aged 80 years and older with atrial fibrillation—a g...

Hosts Mitsuaki Sawano, MD, Shun Kohsaka, MD, and Satoshi Shoji, MD welcome Prof. Tomonori Okamura, MD, and Dr. Aya Hirata, MPH, PhD (Department of Preventive Medicine and Public Health, Keio University School of Medicine) to discuss their JACC Viewpoint, “Current Status of Cardiovascular Disease in Japan: Prevention Strategies, Future Challenges, and Fundamental Lessons.” Building on the Global Bu...