...in cohort-1, among 26 evaluable pts with squamous cell carcinoma, 20 partial response and 6 stable disease were observed for a 76.9% ORR and a 100.0% DCR, median DOR and median PFS was not reached while 6-month PFS rate was 86.2%. In Cohort-2, among 19 evaluable pts, 13 partial response and 5 stable disease were observed for a 68.4% ORR and a 94.7% DCR while median DOR was 5.5 months, and median PFS was 8.3 months. AK112 plus chemotherapy has shown a promising anti-tumor efficacy in each cohort.