End Hole vs. Pressure-Modulated Delivery of Y-90 Resin Microspheres to Liver Metastases.

August 24, 2026 updated by: Stanford University

Pressure-Enabled Selective SIR-Sphere Uptake for Radiation Efficacy (PRESSURE): A Prospective Randomized Clinical Trial of End Hole vs. Pressure-Modulated Delivery of Y-90 Resin Microspheres to Liver Metastases.

Patients with liver metastases undergoing planning arteriography for Y-90 administration by interventional radiology will be screened for study enrollment. If there are at least 2 planned delivery sites with the same target mean dose to tumor and at least 1 tumor in each angiosome that is measurable by RECIST criteria, the patient is potentially eligible for this study (see full inclusion and exclusion criteria). On the day of Y-90 administration, one delivery site will be randomized to a standard end hole microcatheter while the other delivery site will be assigned to the TriNav Infusion System.

A standard of care post-Y-90 PET/CT will be performed and dosimetry analysis will be conducted. The patient will also undergo a standard of care MRI 3 months and 6 months following Y-90 administration and disease response will be graded according to RECIST/mRECIST criteria.

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

65

Phase

  • Not Applicable

Contacts and Locations

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

Study Contact

Study Contact Backup

Study Locations

  • United States
    • California
      • Palo Alto, California, United States, 94305
        • Stanford University
        • Contact:
        • Contact:
        • Principal Investigator:
          • Matthew Hung

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

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Presence of multiple liver metastases
  2. Prior multidisciplinary clinical decision for treatment with radioembolization
  3. 18 years of age or older
  4. ECOG less than or equal to 2
  5. Life expectancy > 3 months
  6. Ability to understand and the willingness to provide written informed consent.
  7. At least 2 planned Y-90 delivery sites/vessels with the same target mean dose to tumor
  8. Angiosome for each delivery site has at least 1 measurable tumor per RECIST criteria
  9. At least 1 target tumor per delivery site is exclusively supplied by the angiosome of the delivery site.
  10. Vascular anatomy suitable for use with the TriNav Infusion System, including target vessel diameter 1.5-5 mm.
  11. The vessel level for each planned delivery site is no further distal than the segmental level.

Exclusion Criteria:

  1. Pregnant
  2. Breast-feeding
  3. Lung shunt fraction > 20% or calculated lung dose > 30 Gy
  4. Prior hepatic transarterial embolization in the hepatic lobe to be treated

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: Single Group
Participants undergo Y-90 administration using both the TriNav Infusion System and a standard end hole microcatheter, with delivery sites randomized within the participant.
Device: The TriNav Infusion Systems
The Y-90 dose to be delivered by the TriNav Infusion System will be determined and recorded by the Investigator or Sub-Investigator, calculated using partition-based dosimetry software (i.e. MIM SurePlan or Simplicit90y)
Device: Standard End Hole Microcatheter
The comparator is a standard end hole microcatheter, defined as any commercially available microcatheter utilizing a single end hole without balloon occlusion or other tip modifications. The Y-90 dose delivered by the standard end hole microcatheter will be determined and recorded by the Investigator or Sub-Investigator and calculated using partition-based dosimetry software (e.g., MIM SurePlan or Simplicit90Y).

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Tumor Absorbed Dose (Gy)
Time Frame: Within 1 day following intervention
Tumor absorbed dose (Gy) measured using post-radioembolization ^90Y PET/CT and Simplicit90Y dosimetry analysis software. The endpoint will compare the absorbed dose delivered to tumors following Y-90 administration using the TriNav Infusion System versus a standard end-hole microcatheter.
Within 1 day following intervention

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Tumor-to-Normal Liver Ratio (T/N Ratio)
Time Frame: Within 1 day following intervention
T/N ratio measured on post-radioembolization ^90Y PET/CT using Simplicit90Y dosimetry analysis software. This endpoint evaluates preferential microsphere deposition within tumor relative to normal liver tissue and compares results between treatment groups.
Within 1 day following intervention
Objective Response Rate (ORR) by RECIST 1.1
Time Frame: 3 months and 6 months after radioembolization
Proportion of target lesions achieving complete response (CR) or partial response (PR) according to RECIST 1.1 criteria on contrast-enhanced MRI of the abdomen at 3 and 6 months following radioembolization.
3 months and 6 months after radioembolization
Disease Control Rate (DCR) by RECIST 1.1
Time Frame: 3 months and 6 months after radioembolization
Proportion of target lesions achieving complete response (CR), partial response (PR), or stable disease (SD) according to RECIST 1.1 criteria on contrast-enhanced MRI of the abdomen at 3 and 6 months following radioembolization.
3 months and 6 months after radioembolization
Tumor Response by mRECIST for enhancing tumors
Time Frame: 3 months and 6 months after radioembolization
For tumors demonstrating arterial enhancement on pre-treatment imaging, treatment response will be assessed using mRECIST criteria on contrast-enhanced MRI of the abdomen at 3 and 6 months following radioembolization.
3 months and 6 months after radioembolization

Collaborators and Investigators

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

Sponsor

Stanford University

Collaborators

TriSalus Life Sciences, Inc.

Investigators

  • Principal Investigator: Matthew Hung, MD, Stanford University

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 (Estimated)

November 1, 2026

Primary Completion (Estimated)

November 1, 2028

Study Completion (Estimated)

November 1, 2029

Study Registration Dates

First Submitted

August 21, 2026

First Submitted That Met QC Criteria

August 24, 2026

First Posted (Actual)

August 28, 2026

Study Record Updates

Last Update Posted (Actual)

August 28, 2026

Last Update Submitted That Met QC Criteria

August 24, 2026

Last Verified

August 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • IRB-88560

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

Yes

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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