Gene therapy is a promising experimental technique that uses genes, rather than #surgery or drugs, to treat or prevent disease. Usually, a functioning gene is inserted into a patient’s cells to correct the effects of a disease-causing mutation. Roger J. Hajjar, MD, Director of the Cardiovascular Research Center of Mount Sinai Heart, at the Icahn School of Medicine at Mount Sinai, is pioneering gene therapy to reverse #heart failure. #MSHeart | The Mount Sinai Hospital