Question · Q3 2025
Akash Tewari inquired about Pfizer's upcoming phase III EZH2 readout in CRPC, asking about confidence in adequate target exposure after food effect studies and expectations for overall survival benefit, specifically a 20-30% improvement.
Answer
Chris Boshoff, Chief Scientific Officer and President of Research and Development, Pfizer, confirmed that the EZH2 program is a first-in-class, internally discovered asset. He highlighted previously shared randomized data showing significant PFS benefit and expressed confidence in the selected dose based on ASCO data, which demonstrated compatibility with reduced GI adverse events. Albert Bourla, Chairman and CEO, Pfizer, also contributed.