Bristol lays out KRAS med Krazati's stumble in confirmatory colorectal cancer trial on July 07, 2026 Accelerated adagrasib Approved Colorectal Carcinoma Confirmatory Trial KRAS NP_004976.2:p.G12C Krazati KRAZATI-12 KRYSTAL-1 Myers Squibb Phase 3 United States Food and Drug Administration +