Fig. 4From: Octamer-binding transcription factor 4-positive circulating tumor cell predicts worse treatment response and survival in advanced cholangiocarcinoma patients who receive immune checkpoint inhibitors treatmentUnivariate and multivariate Cox regression analyses of PFS in advanced CCA patients. Univariate Cox regression analysis was used to predict PFS (A); multivariate Cox regression analysis was used to identify independent predictors of PFS (B) in advanced CCA patientsBack to article page