A Phase 2, Fast Real-time Assessment of Combination Therapies in Immuno-ONcology Study in Participants With Advanced Gastric Cancer (FRACTION-Gastric Cancer)

Objective Response Rate (ORR) by Investigator

时间窗: From first dose of study treatment until progression or subsequent anticancer therapy, whichever occurs first (up to approximately 65 months)

ORR is the percent of participants whose best overall response (BOR) is complete response (CR) or partial response (PR). BOR is the best response from the start of the study treatment until objectively documented progression per RECIST v1.1 or subsequent anticancer therapy, whichever occurs first. CR is the disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) have reduction in short axis to \<10 mm. PR is at least a 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum diameters. The Response Evaluation Criteria in Solid Tumors (RECIST) is a standard way to measure the response of a tumor to treatment. CR+PR, confidence interval based on Clopper and Pearson method.

Kaplan-Meier Analysis of Progression Free Survival Rate (PFSR) at 24 Weeks

时间窗: 24 weeks after first dose

The PFSR at 24 weeks is defined as the proportion of treated participants remaining progression free and surviving at 24 weeks since the first dosing date. Progressive Disease (PD) is at least a 20% increase in the sum of diameters of target lesions, taking as reference the smallest sum on study. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. Point estimates are derived from Kaplan-Meier analyses, the 95% CIs are derived from Greenwood formula.

Median Duration of Response (DOR)

时间窗: From first dose to date of first documented tumor progression or death due to any cause, whichever occurred first (up to approximately 65 months)

Duration of Response (DOR) is the time between the date of first response and the date of first documented disease progression as determined by RECIST 1.1 or death due to any cause, whichever occurred first. Complete Response (CR) is the disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \<10 mm. Partial Response (PR) is at least a 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum diameters. Median computed using Kaplan -Meier method.