Genfleet Therapeutics Inc. has entered the KRAS G12C inhibitor race in the U.S. as it gears up to begin phase III trials of GFH-925 (IBI-351) in patients with refractory metastatic colorectal cancer (CRC) following FDA clearance. GFH-925 was the first KRAS G12C inhibitor to receive breakthrough therapy designation from China's National Medical Products Administration for previously treated advanced CRC.