From:  Immune checkpoint inhibitors in patients with advanced gastric cancer: a multi-institutional retrospective real-world study

 Survival rates of patients with MSS according to the number of prognostic factors

Prognostic groupPrognostic index, scoreN, %12-month ОS, %6-month PFS, %
Favorable0–217 (43)50%51%
Unfavorable3–422 (57)9%5%

MSS: microsatellite stable; OS: overall survival; PFS: progression-free survival