Combination of Trametinib (MEK Inhibitor) and Hydroxychloroquine (HCQ) (Autophagy Inhibitor) in Patients With KRAS Mutation Refractory Bile Tract Carcinoma (BTC).

  • End date
    Dec 31, 2023
  • participants needed
  • sponsor
    National Cancer Institute (NCI)
Updated on 17 September 2021
measurable disease



Bile duct cancer is cancer of the slender tubes of the biliary tract. These tubes carry bile through the liver. Such cancer tumors often have an abnormal or mutated gene. Researchers think a mix of drugs can slow the progression of gene-mutated cancers of the biliary tract.


To see if using a combination of trametinib and hydroxychloroquine (HCQ) increases the period of time it takes for a person s bile tract carcinoma (BTC) to get worse.


Adults age 18 and older with BTC.


Participants will be screened with a physical exam, medical history, and cancer history. Their ability to do their normal activities will be assessed. They will have blood and urine tests. They will give a tumor sample. They will have heart tests. They may talk with a heart doctor. They may have an eye exam. They may have a tuberculosis test. They will have computer tomography (CT) scans of the chest, abdomen, and pelvis. They may have magnetic resonance imaging (MRI) scans of the chest, abdomen, pelvis.

Participants will repeat some screening tests throughout the study.

Participants will take HCQ and trametinib tablets by mouth daily in 28-day cycles. They will have study visits once a month. They will take the drugs until they have bad side effects or the drugs stop working.

Participants will have one more tumor biopsies during the treatment. They will have blood taken often.

One month after treatment ends, participants will have a safety follow-up visit. Then they will be called or emailed every 6 months for the rest of their life....


  • Among the new cases of bile tract carcinoma (BTC) that are diagnosed every year in the United States, there are approximately 6,500 cases of gallbladder carcinoma, 3,000 cases of extrahepatic cholangiocarcinoma, and 3,000 cases of intrahepatic cholangiocarcinoma.
  • Current treatment options for patients with cholangiocarcinoma are limited and take no account of the known biological and genetic heterogeneity in these diseases. Median survival for advanced disease remains poor at approximately 1 year.
  • Activating KRAS mutations are frequently detected in all subtypes of BTC and can be found in up to 40% of BTC, predominantly in perihilar and distal cholangiocarcinoma (CCA). However, pharmacological inhibition of mutated KRAS has demonstrated little clinical benefit in general.
  • Trametinib is a reversible, highly selective allosteric inhibitor of mitogen-activated extracellular signal regulated kinases MEK1 and MEK2. Tumor cells with KRAS mutations commonly have hyperactivated extracellular signal-related kinase (ERK) pathways in which activated MEK is a critical component. However, tumors are able to overcome MEK signaling inhibition by trametinib through upregulation of autophagy pathway.
  • Hydroxychloroquine (HCQ) inhibits lysosomal acidification and prevents the degradation of autophagosomes, to suppress autophagy.
  • Trametinib has been approved by FDA for the treatment of melanoma as a single agent or for the treatment of other cancers if tumors carry BRAF mutation. Hydroxychloroquine are approved for the treatment of malaria, lupus erythematosus and acute or chronic rheumatoid arthritis.
  • Preclinical studies have shown that combined treatment of trametinib plus HCQ elicited striking tumor regression in animal model.

-To determine whether the 5-month progression free survival (PFS) of the trametinib plus hydroxychloroquine (HCQ) combination in subjects with refractory bile tract carcinoma (BTC) with KRAS mutation exceeds 25%.

  • Histopathological confirmation of BTC or carcinoma highly suggestive of a diagnosis of BTC.
  • Tumor must have KRAS mutation.
  • Patients must have disease that is not amenable to potentially curative resection, transplantation or ablation.
  • Age greater than or equal to 18 years
  • Patients must have measurable lesion by RECIST 1.1.
  • At least two weeks washout period from previous therapy
  • ECOG less than or equal to 2
  • Adequate renal, hepatic and bone marrow function

-The study is open-labeled phase 2 study. It is designed to enroll total 30 patients with refractory BTC, to test the hypothesis that treatment with a combination of HCQ and trametinib prevents cancer progression/recurrence. We propose that this combination will have relative safety profile and antitumor efficacy in BTC patients with KRAS mutation.

Condition Bile duct carcinoma, Adenocarcinoma, Cholangiocarcinoma, Biliary neoplasm, Neoplasm of unspecified nature of digestive system, cancer of the bile duct, biliary cancer
Treatment hydroxychloroquine, Trametinib
Clinical Study IdentifierNCT04566133
SponsorNational Cancer Institute (NCI)
Last Modified on17 September 2021


Yes No Not Sure

Inclusion Criteria

Histopathological confirmation of
biliary tract carcinoma (BTC) OR carcinoma in the setting of clinical and radiological characteristics which, together with the pathology, are highly suggestive of a diagnosis of BTC
Note: The term BTC includes intra- or extra- hepatic cholangiocarcinoma (CCA)
gallbladder cancer or ampullary cancer
The tumor must have KRAS mutation(s) of clinical significance, confirmed by NCI Laboratory of Pathology
Patients must have received or been intolerant of at least one line of chemotherapy
Patients must have at least 1 measurable lesion by RECIST version 1.1
Patients must have disease that is not amenable to potentially curative resection, ablation or transplantation
Age greater than or equal to 18 years
Performance status (ECOG) 0-2
If liver cirrhosis is present, patient must have a Child-Pugh score <7 (Class A)
Patients must have adequate organ and marrow function as defined below
ANC greater than or equal to 1,500/mcL
platelets greater than or equal to 100,000/mcL
hemoglobin greater than or equal to 9 g/dL
total bilirubin if cirrhosis present: Part of Child Pugh requirement. If no cirrhosis: bilirubin should be less than or equal to 1.5 x ULN
ALT or AST less than or equal to 5 x ULN
Creatinine OR Measured or calculated creatinine clearance (CrCl) (eGFR may also be used in place of CrCl) : < 1.5x institution upper limit of normal OR greater than or equal to 30 mL/min/1.73 m^2 for participant with creatinine levels greater than or equal to 1.5 X institutional ULN
ALT (SGPT)=alanine aminotransferase (serum glutamic pyruvic transaminase)
AST (SGOT)=aspartate aminotransferase (serum glutamic oxaloacetic
GFR=glomerular filtration rate; ULN=upper limit of normal
Creatinine clearance (CrCl) or eGFR should be calculated per institutional
Patients must have at least 1 focus of disease that is amenable to mandatory tumor biopsies and be willing to undergo this. Ideally, the biopsied lesion should not be one of the target measurable lesions, although this can be up to the discretion of the investigators
The study drugs are harmful for developing human fetus. For this reason, women of childbearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) at the study entry, for the duration of study treatment and up to 4 months after the last dose of the study drug(s). Should a woman become pregnant or suspect she is pregnant while she or her partner is participating in this study, she should inform her treating physician immediately
Patients must be able to understand and be willing to sign a written informed consent

Exclusion Criteria

Patients who have had standard-of-care anti-cancer therapy within 2 weeks of treatment initiation or therapy with investigational agents (e.g. chemotherapy, immunotherapy, endocrine therapy, targeted therapy, biologic therapy, tumor embolization, monoclonal antibodies or other investigation agents), large field radiotherapy, or major surgery within 4 weeks of treatment initiation
Any unresolved toxicity NCI CTCAE v.5 Grade greater than or equal to 2 from previous anticancer therapy with the exception of alopecia, vitiligo, and the laboratory values defined in the inclusion criteria. Patients with Grade greater than or equal to 2 neuropathy will be evaluated on a case-by-case basis
Has biliary duct obstruction, unless a treatable, clinically relevant obstruction has been relieved by internal endoscopic drainage/stenting, palliative by-pass surgery or percutaneous drainage prior to treatment initiation
Patients with known brain metastases are excluded from this clinical trial because of their poor prognosis and because they often develop progressive neurologic dysfunction that would confound the evaluation of neurologic and other adverse events
Patients with signs of liver failure, e.g. clinically significant ascites, encephalopathy, or variceal bleeding within six months before treatment initiation
History or current evidence of retinal vein occlusion (RVO) or current risk factors for RVO (e.g. uncontrolled glaucoma or ocular hypertension, history of hyper viscosity or hypercoagulability syndromes)
Current evidence of uncontrolled, significant intercurrent illness including, but not limited to, the following conditions
Cardiovascular disorders: Congestive heart failure New York Heart Association class 3 or 4, unstable angina pectoris, serious cardiac arrhythmias, stroke (including transient ischemic attack [TIA]), myocardial infarction (MI), or other ischemic event, or thromboembolic event (e.g., deep venous thrombosis, pulmonary embolism) within 3 months before treatment initiation
History of glucose-6-phosphate dehydrogenase (G6PD) deficiency
History of seizures
Patients who are planning on embarking on a new strenuous exercise regimen after first dose of study treatment. Muscular activities, such as strenuous exercise, that can result in significant increases in plasma creatine kinase (CK) levels should be avoided while on study treatment
Patients who have neuromuscular disorders that are associated with elevated CK (e.g., inflammatory myopathies, muscular dystrophy, amyotrophic lateral sclerosis, spinal muscular atrophy)
Impairment of gastrointestinal function or gastrointestinal disease (e.g., ulcerative disease, uncontrolled nausea, vomiting, diarrhea, malabsorption syndrome, or small bowel resection that under the judgment of the principal investigator (PI) may impair absorption of study drugs)
Any other condition that would, in the Investigator s judgment, contraindicate the patient s participation in the clinical study due to safety concerns or compliance with clinical study procedures, e.g., infection/inflammation, intestinal obstruction, unable to swallow medication (patients may not receive drug through a feeding tube), social/psychological issues, etc
Screening corrected QT interval by Fridericia's (QTcF) > 500 msec
Known infection with human immunodeficiency virus (HIV), unless patient is on effective anti-retroviral therapy with undetectable viral load within 6 months of treatment initiation
Known chronic hepatitis B virus, unless hepatitis B virus (HBV) viral load is undetectable
Known history of hepatitis C virus (HCV) infection, unless completed treatment and cured with undetectable HCV viral load
Known prior severe hypersensitivity to study drugs or any component in its formulations (CTCAE v5.0 grade >= 3)
Pregnant women are excluded from this study because study therapy can cause fetal harm. Because there is potential risk for adverse events in nursing infants secondary to treatment of the mother with study therapy, breastfeeding should be discontinued if the mother is treated with study drugs
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