Table 1. Demographic and clinical characteristics of discovery cohort patients (n=5).

Characteristics	Responder (n=3)	Non-responder (n=2)
Age, median [range]	74 [70–75]	74 [73–75]
Gender, n (%)
Female	1 (33.33)	1 (50.00)
Male	2 (66.67)	1 (50.00)
PD-L1 (CPS), n (%)
>10	1 (33.33)	1 (50.00)
1–10	2 (66.67)	0
<1	0	1 (50.00)
Tumor location, n (%)
Esophagogastric junction & Fundus of stomach	1 (33.33)	1 (50.00)
Body of stomach	1 (33.33)	0
Antrum	1 (33.33)	0
Lesser curvature of stomach	0	1 (50.00)
MMR/MSI, n (%)
MSS	3 (100.00)	2 (100.00)
Histology, n (%)
Signet-ring cell	0	1 (50.00)
Poorly differentiated adenocarcinoma	2 (66.67)	0
Moderately differentiated adenocarcinoma	1 (33.33)	1 (50.00)

PD-L1, programmed death-ligand 1; CPS, combined positive score; MMR, mismatch repair; MSI, microsatellite instability; MSS, microsatellite stability.