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Stem Cell and Left Ventricular Assist Device Combination Therapy. Ventricular assist device (VAD) technology has evolved significantly over the past decades and currently represents one of the most important treatment strategies for patients with advanced chronic heart failure. There is increasing evidence that in selected patients undergoing long-term VAD support, improvement of myocardial structure and function may occur. However, there seems to be a significant discrepancy between structural and functional recovery of the failing myocardium, as only a small fraction of VAD-supported patients demonstrate reverse structural remodeling and eventually reach clinically significant and stable, functional improvement. More recently, cell therapy has gained a growing interest in the heart failure community because of its potential to augment reverse remodeling of the failing myocardium. Although theoretically the combination of long-term VAD support and cell therapy may offer significant advantages over using these therapeutic modalities separately, it remains largely unexplored. This review aims to summarize the current state of the art of the effects of VAD support and cell therapy on the reverse remodeling of the failing myocardium and to discuss the rationale for using a combined treatment strategy to further promote myocardial recovery in patients with advanced chronic heart failure.