The results showed the objective response rate (ORR) was 6.7% in both first-line switch-maintenance (1L-mn) and second-line (2L) subgroups and the median OS was 11.1 and 6.6 weeks in two arms (1L-mn and 2L respectively), with a nonsignificant trend toward longer OS for PD-L1-positive patients in the 1L-mn subgroup ( 7 ).
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Unexpected curative effect of PD-1 inhibitor in gastric cancer with brain metastasis: A case report.
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