Merck & Co. Inc. (NYSE:MRK) announced today that Keytruda—its cancer drug—has been granted a breakthrough therapy designation by the Food and Drug Administration (FDA) for the treatment of relapsed or refractory classical Hodgkin lymphoma (cHL). The announcement marks the fourth breakthrough therapy designation for the first-ever anti-PD-1 therapy to be approved in the US.
http://www.bidnessetc.com/67407-merck-keytruda-headed-extended-dominance-cancer-market/
Merck & Co: Keytruda Headed for Extended Dominance in Cancer Market