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Here, we aim at describing the pattern of care, survival outcome and prognostic factors of ABC patients (pts) receiving third-line chemotherapy. Institutional registries across three academic medical centers were retrospectively reviewed. Kaplan–Meier estimators were used to calculate survival, the log-rank test to make comparisons, and the Cox proportional hazard models to assess the progostic impact of variables. Among 101 pts included in the analysis. 68 (67.3%), 19 (18.8%) and 14 (13.8%) had intrahepatic and extrahepatic cholangiocarcinoma and gallbladder cancer, respectively. Atotal of 63 (62.3%) pts received monochemotherapy, while 38 (37.6%) were treated with adoublet. The median OS and PFS were 5 and 3 months, respectively. Disease control rate was achieved in 23 (22.7%) pts, with 2 (2%) partial responses. Grade 3–4 treatment-related adverse events were reported in 22 (21.7%) pts. At multivariate analysis, ECOG PS (p &lt; 0.001), tumor burden (p = 0.01) and lymphocyte-to-monocyte ratio (p =0.02) were independent predictors of survival. Third-line chemotherapy displayed limited activity in this real-world cohort, although prognostic factors have been identified that may assist in treatment decision. The results of this multicenter experience, highlight the need for more effective therapies and provide a benchmark for future trials in this setting.

Third-line chemotherapy in advanced biliary cancers (ABC): pattern of care, treatment outcome and prognostic factors from a multicenter study