AbstractBackgroundThere is little information regarding appropriate therapies for coronary artery disease (CAD) patients with implantable devices – such as implantable cardioverter‐defibrillators (ICDs), cardiac resynchronization therapy devices (CRT‐Ds) and cardiac resynchronization therapy pacemaker (CRT‐P) devices – in Japan. To address this lack of information, we have launched the Japan Implantable Devices in Coronary Artery Disease (JID‐CAD) study.MethodsThis study has been designed as a prospective, multicenter, non‐randomized and observational investigation. All patients will be followed up every six months over a two‐year period. The primary endpoint will be the administration of appropriate device therapy. Secondary endpoints include administration of inappropriate therapy, death, hospitalization, or cardiovascular events.ConclusionIn this report, we discuss the current clinical situation of appropriate therapy, and how it is influenced by catheter ablation and revascularization therapy in patients with CAD.