By: Ada Seldin, Staff Editor – On November 22, 2013, simeprevir (Olysio®), a new agent to treat chronic hepatitis C, received approval under the FDA’s priority review program. Simeprevir is an NS3/4A protease inhibitor that blocks the replication of the hepatitis C virus. Two other drugs from the same class, boceprevir and telaprevir, which were…