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Walk the evidence base by book and chapter — the raw source passages that ground Ask, Differential, and the rest.
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Molecular Targets in Cholangiocarcinoma. Cholangiocarcinoma (CCA) encompasses a heterogeneous collection of malignancies for which diagnostic biomarkers are lacking and population screening is infeasible because of its status as a rare disease. Coupled with high postsurgical recurrence rates among the minority of patients diagnosed at resectable stages, systemic clinical management will inevitably be required for the majority of patients with CCA with recurrent and advanced disease. In this review, we discuss the therapeutic potential of different classes of molecular targets at various stages of development in CCA, including those targeted to the tumor epithelia (oncogenic, developmental, metabolic, epigenomic) and tumor microenvironment (angiogenesis, checkpoint regulation). Furthermore, we discuss the successes and failures of CCA-targeted therapies, emphasizing key lessons learned that should pave the way for future molecular target evaluation in this uncommon yet bona fide target-rich disease.