Second-Line Chemotherapy for Intrahepatic Cholangiocarcinomas: What Is the Real Gain?

Background: The presence of actionable alterations in advanced biliary tract cancer patients opened new therapeutic possibilities for second-line treatments. However, for around 60% of the patients, chemotherapy remains the only therapeutic option. The aim of our study was to evaluate outcomes and prognostic parameters in patients with intrahepatic cholangiocarcinomas treated with second-line chemotherapy. Methods: A total of 255 consecutive metastatic intrahepatic cholangiocarcinoma (ICC) patients were retrospectively reviewed and clinicopathologic and survival data were collected. Results: Fourty-four percent of ICC patients underwent second-line chemotherapy. In particular, younger ICC patients with better ECOG PS status, and with disease control after first-line chemotherapy were those who were treated with second-line treatments. Median progression-free survival in the patients treated with second-line chemotherapy was 3 months. Finally, the patients affected by intrahepatic cholangiocarcinoma with better ECOG PS, with prior surgical resection of the primary tumor, who responded to first-line chemotherapy, and had better progression-free survival with second-line chemotherapy, were associated with better outcomes in multivariate analysis. Conclusions: Not all patients seem to benefit from second-line chemotherapy. To improve therapeutic decisions, performance status and disease control with first-line chemotherapy should lead to the decision on the usefulness of second-line treatments in advanced ICC patients.