A total of 33 patients (22 NSCLC, 9 CRC and 2 pancreatic cancer) had at least 1 post-baseline tumor assessment; in the 800mg QD cohort, overall response rate (ORR) and disease control rate (DCR) were 50% (5/10) and 100% (10/10), respectively, including 4 non-confirmed partial response (PR); in the 400mg QD cohort had an ORR and DCR of 80% (4/5) and 100% (5/5) respectively, including 2 non-confirmed PR. Patients with NSCLC (400mg QD and 800mg QD), the ORR and DCR were 70% (7/10) and 100% (10/10), respectively, including 5 non-confirmed PR. JAB-21822 was well tolerated with impressive preliminary efficacy in patients with heavily treated solid tumors harboring KRAS G12C mutation.