AstraZeneca's ASCO darling may have competition By: CNBC.com News May 15, 2014 at 10:19 AM EDT Ahead of the year's biggest event in cancer research, ASCO, research revealed AstraZeneca's cancer drug may have competition from Clovis Oncology. Read More >> Related Stocks: Astrazeneca Plc ADR Bristol-Myers Squibb Clovis Oncology Inc Incyte Corp JPMorgan Chase & Co Pfizer