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Comparison of PFS and OS curves between CTCEpCAM+ and CTCEpCAM− patients. (A) PFS of CTCEpCAM+ and CTCEpCAM− patients was not statistically different (HR=1.049; 95% CI: 0.659−1.670; P=0.841); (B) OS of CTCEpCAM+ and CTCEpCAM− patients was not statistically different (HR=0.960; 95% CI: 0.505−1.823; P=0.899). PFS, progression-free survival; OS, overall survival; CTC, circulating tumor cell; HR, hazard ratio; 95% CI, 95% confidence interval.
