ASLAN001 in Patients With Advanced or Metastatic Cholangiocarcinoma Who Progressed on at Least 1 Line of Systemic Therapy

This is a single arm, multicentre, Phase 2 study to assess efficacy and safety of ASLAN001 in patients with advanced or metastatic cholangiocarcinoma who progressed on at least 1 line of systemic therapy. 25 evaluable patients will be enrolled in the study. After evaluation of initial response in the first 10 evaluable patients, Sponsor will make a decision on recruitment of an additional 15 evaluable patients. If no response is observed, the study will stop. The primary objective is to assess efficacy of varlitinib (also known as ASLAN001) as measured by ORR (based on RECIST v1.1). The secondary objectives are to (1) evaluate the efficacy of varlitinib, as measured by DoR, PFS, OS and DCR, (2) assess ORR, DoR, PFS, DCR and OS by tumor EGFR/HER2 status, (3) assess safety and tolerability of ASLAN001 monotherapy. Exploratory objectives are to explore possible relationships between response to ASLAN001 and the protein expression levels and gene mutational status of the proteins and genes via IHC and PCR/Sequencing.