A phase Ib/II study of SHR-1701 (a bifunctional anti-PD-L1/TGF-βRII agent) in combination with bevacizumab (BEV) in patients with advanced solid tumors (ESMO 2023)
No grade 4/5 TRAEs were reported. Table: 1026MO Efficacy outcomes Variables GC/GEJC (1L) GC/GEJC (≥2L) nsqNSCLC All (n=19) CPS≥5 (n=15) All (n=27) CPS≥5 (n=9) All (n=10) Best overall response, n (%) CR 0 0 1 (3.7) 1 (11.1) 0 PR 4 (21.1) 4 (26.7) 8 (29.6) 6 (66.7) 1 (10.0) SD 7 (36.8) 5 (33.3) 5 (18.5) 1 (11.1) 5 (50.0) PD 7 (36.8) 5 (33.3) 12 (44.4) 1 (11.1) 3 (30.0) NE 1 (5.3) 1 (6.7) 1 (3.7) 0 1 (10.0) ORR, % (95% CI) 21.1 (6.1, 45.6) 26.7 (7.8, 55.1) 33.3 (16.5, 54.0) 77.8 (40.0, 97.2) 10.0 (0.3, 44.5) DCR, % (95% CI) 57.9 (33.5-79.7) 60.0 (32.3, 83.7) 51.8 (32.0, 71.3) 88.9 (51.8, 99.7) 60.0 (26.2, 87.8) mPFS, months (95% CI) 4.1 (1.3-NR) 4.1 (1.4-NR) 4.0 (1.4-NR) 10.3 (1.3-NR) 6.2 (1.3-9.9) Conclusions SHR-1701 plus BEV showed encouraging antitumor activity with a favorable safety profile in pts with advanced GC/GEJC and nsqNSCLC.