withheld at the request of the investigator. Genetic Modifiers of Cardiotoxicity: PILOT Principal Investigator: Christopher Newton-Cheh, MD, MPH, Massachusetts General Hospital Co-Investigator(s): Paul Arpino, PharmD, Massachusetts General Hospital Peter Noseworthy, MD, Massachusetts General Hospital Drug-induced QT prolongation and resultant potentially fatal arrhythmia is a costly impediment ...