Combination Therapy Using Durvalumab and Histotripsy for Treatment of Intrahepatic Cholangiocarcinoma (CODAH)

Combination Therapy Using Durvalumab and Histotripsy for Treatment of Intrahepatic Cholangiocarcinoma (CODAH Trial)

The purpose of this research is to evaluate whether adding histotripsy to maintenance durvalumab increases immune response and to assess the safety of this combination for participants with advanced intrahepatic cholangiocarcinoma (iCCA). Histotripsy is a non-invasive, non-thermal treatment that uses focused ultrasound energy to destroy tumor tissue. 12 people will be enrolled in this study.

Study Overview

• Status: Not yet recruiting
• Conditions: Intrahepatic Cholangiocarcinoma
• Intervention / Treatment: Device: Histotripsy; Drug: Durvalumab; Procedure: Biopsy

Detailed Description

The primary objective of this pilot phase II study is to evaluate preliminary efficacy of increased immune system activation and safety of combined histotripsy and maintenance durvalumab therapy.

The secondary objectives are to evaluate additional efficacy signal and safety of the addition of histotripsy along with continued maintenance durvalumab therapy.

Exploratory objectives include evaluation for off-target effects on iCCA tumors not targeted for histotripsy treatment and evaluation of peripheral blood samples for assessment of circulating immune biomarkers and circulating tumor DNA (ctDNA).

• Study Type: Interventional
• Enrollment (Estimated): 12
• Phase: Phase 2

Contacts and Locations

• Study Contact: Name: Cancer Connect; Phone Number: 800-622-8922; Email: clinicaltrials@cancer.wisc.edu

Study Locations

• United States
  • Wisconsin
    • Madison, Wisconsin, United States, 53706
      • University of Wisconsin

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Participant diagnosed with histologically confirmed intrahepatic cholangiocarcinoma

  • Participant demonstrates disease control following 18 weeks of chemotherapy (gemcitabine and/or cisplatin) and immunotherapy (durvalumab) as part of standard of care first line regimen.

    • Participants are allowed to be on maintenance durvalumab therapy following disease control at 18 weeks prior to enrollment into the study.
  • All participants must have prior biopsy confirming diagnosis of cholangiocarcinoma.

• Participant has iCCA tumor burden appropriate for biopsy and histotripsy treatment

  • Participant able to undergo liver biopsy of Index Tumor.

    • Index Tumor will be a predetermined non-histotripsy tumor in patients with multifocal disease, or a predetermined region of intentionally untreated tumor in patients with solitary disease.

  • Participant to have iCCA deemed targetable for histotripsy.

    • Participants with solitary tumor must have longest dimension ≥ 2.0 cm to allow for planned region of intentionally untreated Target Tumor for Index Tumor.
• Participants' iCCA is considered unresectable or patient is a non-surgical candidate
• Participant can undergo general anesthesia.
• Participant has a Child-Pugh Score of A or B (up to B8).
• Participant has an Eastern Cooperative Oncology Group Performance Status (ECOG PS) grade 0-2 at baseline screening.

• Participant meets the following functional criteria, ≤7 days prior to the planned histotripsy procedure date

  • Liver function: Alanine transaminase (ALT) and Aspartate transaminase (AST) <2.5x upper limit of normal (ULN) and/or bilirubin <2.5 ULN.
  • Renal function: serum creatinine <2x ULN.
  • Hematologic function: Absolute neutrophil count >1,000/uL and platelet >50,000/uL, hemoglobin >8.0 g/dL.
• Participant has an International Normalized Ratio (INR) score of <3.0, ≤7 days prior to the planned histotripsy procedure date.
• Persons of childbearing potential must have a negative pregnancy test (serum or urine) within 7 days prior to registration.
• Females of childbearing potential who are sexually active with a male able to father a child must be willing to abstain from heterosexual vaginal intercourse or use an effective method(s) of contraception from the time of informed consent, during the study and for up to 14 months after the last dose of study drug(s). Males able to father a child must be willing to abstain from heterosexual vaginal intercourse or to use an effective method(s) of contraception from initiation of treatment, during the study and for up to 11 months after the last dose of study drug(s).
• Ability of the participant to understand and comply with study procedures for the entire length of the study, as determined by the enrolling physician or protocol designee.

Exclusion Criteria:

• Participant is pregnant or planning to become pregnant or nursing (lactating) during the trial period.
• Participant is enrolled in another investigational trial and/or is taking investigational medication or treated with an investigational device ≤30-days prior to planned histotripsy procedure date.
• In the Investigator's opinion, the subject has co-morbid disease(s) or condition(s) that would cause undue risk and preclude safe histotripsy treatment, including but not limited to interstitial lung disease, including history of interstitial lung disease or non-infectious pneumonitis.
• Active autoimmune disease that has required systemic treatment in the past 2 years (i.e., with use of disease modifying agents, corticosteroids or immunosuppressive drugs). Replacement therapy (e.g., thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency, etc.) is not considered a form of systemic treatment. .
• Participant has major surgical procedure or significant traumatic injury ≤2 weeks prior to the planned treatment or not fully recovered (CTCAE grade 1 or better) from side effects/complications of such procedure or trauma.
• Participant has not recovered to Common Terminology Criteria for Adverse Events (CTCAE) grade 1 or better from any adverse effects (exceptions for alopecia, grade 2 neuropathy, grade 2 hypothyroidism, grade 2 hypoadrenalism) related to previous anti-cancer therapy. Please refer to inclusion criteria for lab-based enrollment parameters.
• Participant has a history of bleeding disorders (e.g. von Willebrand disease) or subject is suspected to have a bleeding disorder.
• Participant has uncorrectable coagulopathy.
• In the opinion of the Investigator, histotripsy is not a treatment option for the subject.
• Participant has a concurrent condition that, in the investigator's opinion, could jeopardize the safety of the subject or compliance with the protocol.
• Participants' tumor(s) is not targetable per discretion of radiologist.
• Participant has a known sensitivity to contrast media and cannot be adequately pre-medicated.
• Participants' Target Tumor(s) has/have had prior locoregional therapy (e.g. ablation, embolization, radiation).
• History of solid organ or allogeneic bone marrow transplantation.
• Patients with a prior or concurrent malignancy whose natural history or treatment has the potential to interfere with the safety or efficacy assessment of the investigational regimen are not eligible for this trial.
• Significant dementia or other mental condition that precludes the participant's ability to consent to the study.
• Untreated central nervous system (CNS) metastasis. Screening of asymptomatic patients for CNS metastasis is not required for enrollment.
• Live vaccine administration within 28 days of planned initial dose of durvalumab.

Study Plan

How is the study designed?

Design Details

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

Number of Arms

1

Arms and Interventions

Participant Group / Arm

Intervention / Treatment

Experimental: Participants with advanced iCCA; 3 research specific visits; pre-histotripsy treatment (C1D3), 14-day post histotripsy follow-up with biopsy (C1D22), and 30-day post histotripsy treatment adverse events assessment. The remaining visits, including the histotripsy treatment and durvalumab infusions, are a part of the study protocol but are part of the patient's ongoing medical care. Participants followed until progression up to 5 years.

Device: Histotripsy; Histotripsy will be performed using the Edison® System (HistoSonics, Inc.), which is FDA cleared for destruction of liver tissue using non thermal focused ultrasound. Performed on Cycle 1 Day 8 (C1D8) to treat the Target Tumor.; Other Names: HistoSonics Edison System; Drug: Durvalumab; Durvalumab is an immunotherapy drug and will be administered on day 1 of each 28-day cycle as per local standards. Dosing of maintenance durvalumab is 1500mg IV per FDA labeling with administration performed over 60 minutes as per standard clinical practice.; Other Names: durvalumab maintenance; Procedure: Biopsy; Two research biopsies are planned for cycle 1 day 3 and cycle 1 day 22, before and after histotripsy.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Number of Participants with Increase in Adaptive Immune System Response following histotripsy	Increased adaptive immune system response following histotripsy in addition to ongoing maintenance durvalumab therapy will be interpreted as T cell infiltration, downregulation of myelosuppressive cell types, and upregulation of IFN-γ. This will be completed on the biopsy tissue (pre histotripsy in comparison to post histotripsy).	data collected cycle 1 day 3 (C1D3) and cycle 1 day 22 (C1D22) (up to about 30 days with allowable procedural windows)
Percent of Participants Experiencing Immune-mediated Adverse Events within 30 days of histotrispy		data collected up to day 38 (30 days post-histotripsy)

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Overall Survival (OS)		up to 5 years
Progression Free Survival (PFS)		up to 5 years
Treatment Efficacy	Treatment Efficacy: defined as the lack of a nodular or mass-like area of enhancement within or along the edge of completed treated tumors assessed via MR or CT imaging at 30-days post procedure	data collected up to day 38 (30 days post-histotripsy)
Hepatic toxicity profile of immunotherapy checkpoint with histotripsy reported as Incidence of Dose Limiting Toxicities per Protocol	Hepatic toxicity profile of immunotherapy checkpoint with histotripsy will be assessed using CTCAE version 5 grading and summarized here by number of events.	data collected up to day 38 (30 days post-histotripsy)

Collaborators and Investigators

• Sponsor: University of Wisconsin, Madison
• Collaborators: HistoSonics, Inc.
• Investigators: Principal Investigator: John Swietlik, MD, UW School of Medicine and Public Health

Study record dates

Study Major Dates

• Study Start (Estimated): August 1, 2026
• Primary Completion (Estimated): August 1, 2032
• Study Completion (Estimated): August 1, 2032

Study Registration Dates

• First Submitted: July 20, 2026
• First Submitted That Met QC Criteria: August 10, 2026
• First Posted (Actual): August 14, 2026

Study Record Updates

• Last Update Posted (Actual): August 14, 2026
• Last Update Submitted That Met QC Criteria: August 10, 2026
• Last Verified: August 1, 2026

More Information

Terms related to this study

• Keywords: immunotherapy; tumor microenvironment; histotripsy; iCCA
• Additional Relevant MeSH Terms: Neoplasms; Neoplasms by Histologic Type; Neoplasms, Glandular and Epithelial; Adenocarcinoma; Carcinoma; Cholangiocarcinoma; Investigative Techniques; Specimen Handling; Clinical Laboratory Techniques; Diagnostic Techniques and Procedures; Diagnosis; Surgical Procedures, Operative; Cytological Techniques; Cytodiagnosis; Diagnostic Techniques, Surgical; Biopsy; durvalumab
• Other Study ID Numbers: 2026-0458; Protocol Version 5/8/26 (Other Identifier: UW Madison); SMPH / Radiology (Other Identifier: UW Madison)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: YES

IPD Plan Description

We would share the following de-identified data with HistoSonics, Inc.: histotripsy data, images, diagnosis, weight, height, age, and gender. The Department of Radiology Medical Imaging Research Support (MIRS) Radius team will serve as an honest broker for the sharing of coded data and images.

Results from routine (safety) blood tests and imaging assessments will be placed in participants' EMR.

• IPD Sharing Supporting Information Type: STUDY_PROTOCOL; SAP

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: Yes
• product manufactured in and exported from the U.S.: Yes