Hypofractionated Radiation Therapy and Bintrafusp Alfa for the Treatment of Advanced Intrahepatic Cholangiocarcinoma

March 3, 2026 updated by: M.D. Anderson Cancer Center

"Window of Opportunity" Phase I Trial of Focal Radiotherapy and Bintrafusp Alfa In Patients With Advanced Intrahepatic Cholangiocarcinoma

This phase I trial is to find out the best dose, possible benefits, and/or side effects of hypofractionated radiation therapy and bintrafusp alfa in treating patients with bile duct cancer that has spread to other places in the body (advanced intrahepatic cholangiocarcinoma). Hypofractionated radiation therapy delivers higher doses of radiation therapy over a shorter period of time and may kill more tumor cells and have fewer side effects. Immunotherapy with bintrafusp alfa, a bifunctional fusion protein composed of the monoclonal antibody avelumab and TGF-beta, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. The combination of hypofractionated radiation therapy and bintrafusp alfa may help to control intrahepatic cholangiocarcinoma.

Study Overview

Detailed Description

PRIMARY OBJECTIVE:

I. To examine the safety of bintrafusp alfa in combination with hypofractionated radiation therapy for patients with advanced intrahepatic cholangiocarcinoma and recommend a phase II radiation dose.

SECONDARY OBJECTIVES:

I. To estimate objective response rate, local progression free survival, progression free survival, overall survival with the study regimen.

II. To correlate expression of TGF-beta related pathways with clinical outcomes.

III. To examine intratumoral pharmacodynamic changes in the immune microenvironment using paired biopsies before and after therapy with the study agents.

EXPLORATORY OBJECTIVE:

I. To correlate immune biomarkers from pre- and post-treatment tissue, blood, and stool with clinical study endpoints.

OUTLINE: This is a dose de-escalation study of radiation therapy followed by a dose-expansion study.

Patients undergo hypofractionated radiation therapy once daily (QD) on weekdays (Monday-Friday) for 15 fractions in the absence of disease progression or unacceptable toxicity. Beginning 1 week after completion of radiation therapy, patients receive bintrafusp alfa intravenously (IV) over 1 hour on day 1. Cycles repeat every 14 days for up to 2 years in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed up every 12 weeks for up to 2 years.

Study Type

Interventional

Enrollment (Actual)

2

Phase

  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

    • Texas
      • Houston, Texas, United States, 77030
        • M D Anderson Cancer Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Patients must be male or female >= 18 years of age
  • Patients with histologically or cytologically confirmed intrahepatic cholangiocarcinoma. There must be at least two measurable tumors. One larger mass that will be radiated and a secondary metastatic site that is amenable to biopsies
  • Patients must have received at least one standard first-line chemotherapy regimen or have refused chemotherapy
  • Patients with measurable disease assessed at baseline by computed tomography (CT) (or magnetic resonance imaging [MRI] where CT is contraindicated) will be entered in this study
  • Eastern Cooperative Oncology Group (ECOG) performance status 0-1 (Karnofsky > 70)
  • Leukocytes >= 3,000 cells/mm^3
  • Absolute neutrophil count >= 1,500 cells/mm^3
  • Platelets >= 100,000 cells/mm^3
  • Hemoglobin >= 9 g/dl (no blood transfusions within 4 weeks prior to enrollment)
  • Total bilirubin < 1.5 x institutional upper limit of normal (IULN)
  • Aspartate aminotransferase (AST) (serum glutamic-oxaloacetic transaminase [SGOT])/alanine aminotransferase (ALT) (serum glutamate pyruvate transaminase [SGPT]) =< 2.5 x IULN without liver metastasis, =< 5 x IULN for patients with liver metastasis
  • Creatinine within normal institutional limits OR creatinine clearance >= 60 mL/min/1.73 m^2 for patients with creatinine levels above institutional normal
  • Women of childbearing potential (defined as not post-menopausal for 65 days or no previous surgical sterilization) and fertile men must agree to use adequate contraception for the duration of study participation
  • All female patients of childbearing potential (defined as not post-menopausal for 65 days or no previous surgical sterilization) must agree to use adequate birth control during study treatment and for 90 days after the last dose of study drug and have a negative serum pregnancy test at screening
  • Fertile males must be willing to employ adequate means of contraception during study treatment and for 3 months after the last dose of study drug
  • Male subjects must agree to refrain from sperm donation during the study and for 125 days after the last dose of study drugs
  • Ability to read and/or understand the details of the study and provide written evidence of informed consent as approved by Institutional Review Board (IRB)/ Scientific Review Committee (SRC)

Exclusion Criteria:

  • Patients who are pregnant or lactating
  • Patients with uncontrolled intercurrent illness including symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia and myocardial infarction (MI) within 3 months of initiation of therapy
  • Patients with recent bacterial, viral, or fungal infection(s) requiring systemic antibiotic therapy within one month of enrolling
  • Patient has undergone major surgery within 4 weeks prior to day 1 of treatment in this study. Diagnostic or minimally invasive surgery (i.e., done to obtain a biopsy for diagnosis without removal of an organ or to place an abdominal spacer) are acceptable at physician discretion
  • Patient received radiotherapy, surgery, chemotherapy, or an investigational therapy within 2 weeks prior to study entry weeks
  • Patient has serious medical risk factors involving any of the major organ systems such that the investigator considers it unsafe for the patient to receive an experimental research drug
  • Serious psychiatric or medical conditions that could interfere with treatment
  • Major bleeding in the last 4 weeks
  • Receipt of prior immune checkpoint inhibitors (e.g., anti-CTLA-4, anti-programmed cell death receptor 1, anti-programmed cell death ligand 1 [anti-PD-L1], and any other antibody or drug specifically targeting T-cell costimulation)
  • Receiving an immunologically based treatment for any reason, including chronic use of systemic steroid at doses >= 7.5 mg/day prednisone equivalent within 14 days prior to the first dose of study treatment. Use of inhaled or topical steroids or systemic corticosteroids < 7.5 mg is permitted
  • Receipt of any anticancer medication in the 21 days prior to receiving the first dose of study medication or any unresolved toxicity (> grade 1) from previous anticancer therapy, except for stable chronic toxicities not expected to resolve, such as peripheral neurotoxicity. Prior treatment with nitrosoureas (e.g., carmustine or lomustine) require a 6-week washout prior to the first dose of study treatment
  • Untreated central nervous system (CNS) metastases, or CNS metastases that have progressed (e.g., evidence of new or enlarging CNS metastasis or new neurological symptoms attributable to CNS metastases). Subjects with treated and clinically stable CNS metastases and off all corticosteroids for at least 2 weeks are eligible
  • Any active or inactive autoimmune process (e.g. rheumatoid arthritis, moderate or severe psoriasis, multiple sclerosis, inflammatory bowel disease) or who are receiving systemic therapy for an autoimmune or inflammatory disease

    • Note: Exceptions include subjects with vitiligo, hypothyroidism stable on hormone replacement, controlled asthma, type I diabetes, Graves' disease, or Hashimoto's disease, or with medical monitor approval

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Treatment (hypofractionated radiation, bintrafusp alfa)
Patients undergo hypofractionated radiation therapy QD on weekdays (Monday-Friday) for 15 fractions in the absence of disease progression or unacceptable toxicity. Beginning 1 week after completion of radiation therapy, patients receive bintrafusp alfa IV over 1 hour on day 1. Cycles repeat every 14 days for up to 2 years in the absence of disease progression or unacceptable toxicity.
Undergo biopsy
Other Names:
  • Bx
  • BIOPSY_TYPE
Undergo hypofractionated radiation therapy
Other Names:
  • Hypofractionated Radiotherapy
  • hypofractionation
Given IV
Other Names:
  • Anti-PDL1/TGFb Trap MSB0011359C
  • M7824
  • MSB0011359C

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Incidence of adverse events (AEs)
Time Frame: Up to 60 days
AEs will be graded according to Common Terminology Criteria for Adverse Events version 5.0. AEs will be summarized by patient incidence rates, therefore, in any tabulation, a patient contributes only once to the count for a given AE preferred term. The number and percentage of patients with any treatment-emergent AE will be summarized for all study patients combined.
Up to 60 days

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Objective response rate
Time Frame: Up to 2 years post-treatment
Will estimate the objective response rate by Response Evaluation Criteria in Solid Tumors 1.1 criteria separately with appropriate 95% confidence intervals.
Up to 2 years post-treatment
Local progression free survival (LPFS)
Time Frame: Up to 12 months post-treatment
Will estimate the LPFS distributions using the Kaplan-Meier product limit method and report summary measures such as the median value and probabilities at selected times with appropriate 95% confidence intervals.
Up to 12 months post-treatment
Progression free survival (PFS)
Time Frame: Up to 12 months post-treatment
Will estimate the PFS distributions using the Kaplan-Meier product limit method and report summary measures such as the median value and probabilities at selected times with appropriate 95% confidence intervals.
Up to 12 months post-treatment
Overall survival (OS)
Time Frame: Up to 12 months post-treatment
Will estimate the OS distributions using the Kaplan-Meier product limit method and report summary measures such as the median value and probabilities at selected times with appropriate 95% confidence intervals.
Up to 12 months post-treatment

Other Outcome Measures

Outcome Measure
Measure Description
Time Frame
Biomarker analysis
Time Frame: Up to 2 years post-treatment
Will analyze changes in biomarker expression before and after treatment using a paired t-test if the data are normally distributed, and a Wilcoxon signed rank test if not. Will correlate biomarker expression with clinical benefit using receiver operator characteristics curve analysis.
Up to 2 years post-treatment

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Principal Investigator: Eugene J Koay, M.D. Anderson Cancer Center

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

August 31, 2021

Primary Completion (Estimated)

February 2, 2027

Study Completion (Estimated)

February 2, 2027

Study Registration Dates

First Submitted

January 12, 2021

First Submitted That Met QC Criteria

January 12, 2021

First Posted (Actual)

January 13, 2021

Study Record Updates

Last Update Posted (Actual)

March 5, 2026

Last Update Submitted That Met QC Criteria

March 3, 2026

Last Verified

March 1, 2026

More Information

Terms related to this study

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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