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Prognosis of cancer patients with PD-L1 expression on CTCs in the peripheral blood. A, Pooled HRs and 95% CI for OS. B, Pooled HRs, and 95% CI for PFS. C, Pooled HRs, and 95% CI for OS in the subgroup that did not use ICI therapy. D, Pooled HRs and 95% CI for OS in the subgroup that uses ICI therapy
