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

Inclusion Criteria:

* Patient must have advanced (unresectable) or metastatic, intra or extra hepatic adenocarcinoma originated from bile duct. Histologically-confirmed diagnosis is required for the first 10 evaluable patients. The following patients could be confirmed histologically or cytologically.
* Patients must have disease progression after failing at least 1 line of systemic drug regimen for advanced cholangiocarcinoma due to disease progression or intolerance.
* Presence of radiographically measurable disease based on RECIST v1.1.
* No evidence of biliary duct obstruction, unless obstruction is controlled by local treatment or, in whom the biliary tree can be decompressed by endoscopic or percutaneous stenting with subsequent reduction in bilirubin to below 1.5 x upper level of normal (ULN).
* Patients of respective country's legal age or older at the time of written informed consent.
* Patients with Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.
* Patient must be able to understand and willing to sign the informed consent form and donate tumour tissue (archival or fresh) for evaluation of relevant exploratory endpoints. The first 10 evaluable patients need to have adequate archival tissues for exploratory objectives.
* Patient with adequate organ and hematological function:

  * Hematological function, as follows:

    * Absolute neutrophil count (ANC) ≥ 1.5 x 10\^9/L
    * Platelet count ≥ 100 x 10\^9/L
  * Renal functions, as follows:

    ---Serum creatinine ≤ 1.5x ULN or eGFR \> 60 mL/min/1.73m\^2
  * Hepatic function, as follows:

    * Total bilirubin ≤ 1.5 x ULN
    * AST and ALT ≤ 5 x ULN

Exclusion Criteria:

* Patient with radiation or local treatment within the past 6 weeks for the target lesion(s).
* Patients with major surgical procedures within 21 days prior to study entry.
* Patient with brain lesion, known brain metastases (unless previously treated and well controlled for a period of at least 3 months).
* Patient with malabsorption syndrome, diseases significantly affecting gastrointestinal function, resection of the stomach or small bowel, or difficulty in swallowing and retaining oral medications.
* Patients with an uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, unstable angina pectoris, cardiac arrhythmia, diabetes, hypertension, or psychiatric illness/social situations that would limit compliance with study requirements.
* Patients with any history of other malignancy unless in remission for more than 1 year. (Nonmelanoma skin carcinoma and carcinoma-in-site of uterine cervix treated with curative intent is not exclusionary).
* Female patients who are pregnant or breast feeding.
* Patients who were previously treated with Varlitinib.
* Patients who have received any investigational drug (or have used an investigational device) within the last 14 days before receiving the first dose of study medication.
* Patient with unresolved or unstable serious toxicity ( ≥ CTCAE 4.03 Grade 2) from prior administration of another investigational drug and/or prior cancer treatment.
* Patients with a known history of HIV, decompensated cirrhosis, chronic hepatitis B with HBV DNA \> 2000 IU/ml or persistent abnormal ALT in the past 6 months, chronic hepatitis C with persistent abnormal ALT in the past 6 months.
* Known History of drug addiction within last 1 year.
* Patients who need continuous treatment with proton pump inhibitors during the study period.
* Any history or presence of clinically significant cardiovascular, respiratory, hepatic, renal, hematologic, gastrointestinal, endocrine, immunologic, dermatologic, neurologic or psychiatric disease or any other condition which in the opinion of the Investigator could jeopardize the safety of the patient or the validity of the study results.

For additional information regarding investigative sites for this trial, pls contact ASLAN at contactus@aslanpharma.com