http://www.sciencemag.org/news/2018/10/federal-officials-pause-trial-testing-stem-cells-heart-disease > The now-paused clinical trial has explored using stem cells to repair damage to the heart. > In the wake of a call for retractions of dozens of papers from a high-profile Harvard University heart stem cell research lab, federal officials today announced they are pausing a clinical trial based on research in this field. The National Heart, Lung, and Blood Institute (NHLBI) in Bethesda, Maryland, explained in a statement today that the pending retractions “have raised concerns about the scientific foundations of this trial.”