PULSAR Radiotherapy Plus Anti-PD-1 Therapy in Metastatic Abdominopelvic Tumors

January 26, 2026 updated by: Zhen Zhang
This study evaluates hypofractionated radiotherapy combined with PD-1 inhibitor-based systemic therapy in patients with metastatic solid tumors. Eligible patients will be enrolled into three cohorts according to tumor type: metastatic hepatocellular carcinoma, metastatic renal cell carcinoma, and metastatic urothelial carcinoma. The study aims to assess the safety and therapeutic efficacy of combining localized radiotherapy with immunotherapy, with or without cohort-specific systemic agents.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
103

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • 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

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • China
    • Shanghai Municipality
      • Shanghai, Shanghai Municipality, China, 200032
        • Recruiting
        • Fudan University Shanghai Cancer Center
        • Contact:

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Age ≥18 years at the time of enrollment, with no restriction on sex.
  2. Histologically, cytologically, or radiologically confirmed metastatic abdominopelvic malignancy, including hepatocellular carcinoma, renal cell carcinoma, or urothelial carcinoma.
  3. No more than 10 metastatic lesions, and the radiotherapy treatment plan indicates that radiotherapy can be safely delivered.
  4. At least one measurable lesion is present.
  5. Eastern Cooperative Oncology Group (ECOG) performance status of 0-2.
  6. Determined by a multidisciplinary team (MDT) to require active antitumor treatment.
  7. Adequate bone marrow, liver, renal, and coagulation function as demonstrated by laboratory tests performed within 7 days prior to the first dose of study treatment; no blood transfusion, blood products, granulocyte colony-stimulating factor (G-CSF), or other hematopoietic growth factors are permitted within 7 days prior to laboratory testing.
  8. Voluntary participation with written informed consent provided, and willingness to comply with the study treatment protocol and scheduled visits.

Exclusion Criteria:

  1. Absolute neutrophil count (ANC) <1.5 × 10⁹/L, or platelet count <100 × 10⁹/L (or <80 × 10⁹/L in patients with liver metastases), or hemoglobin <9 g/dL; blood transfusion within 2 weeks prior to enrollment to meet eligibility criteria is not permitted.
  2. Serum total bilirubin >1.5 × the upper limit of normal (ULN), or >2.5 × ULN in patients with liver metastases.
  3. Aspartate aminotransferase (AST) and/or alanine aminotransferase (ALT) >2.5 × ULN, or >5 × ULN in patients with liver metastases.
  4. Estimated glomerular filtration rate (eGFR) <30 mL/min/1.73 m².
  5. Clinically significant electrolyte abnormalities as determined by the investigator.
  6. Active gastrointestinal diseases, including but not limited to gastric or duodenal ulcers, ulcerative colitis, or active bleeding from unresected tumors; or other conditions judged by the investigator to carry a risk of gastrointestinal bleeding or perforation; or a history of gastrointestinal perforation or fistula that has not fully healed after surgical treatment.
  7. History of arterial thrombosis or deep vein thrombosis within 6 months prior to enrollment, or evidence or history of bleeding tendency within 2 months prior to enrollment, regardless of severity.
  8. Stroke or transient ischemic attack within 12 months prior to enrollment.
  9. Significant cardiac disease within 6 months prior to enrollment, including congestive heart failure, acute myocardial infarction, severe or unstable angina, or coronary artery bypass grafting; or New York Heart Association (NYHA) class II or higher heart failure; or left ventricular ejection fraction (LVEF) <50%.
  10. Presence of a clinically detectable second primary malignancy at screening, or a history of another malignancy within the past 5 years, except for adequately treated early-stage non-melanoma skin cancer, carcinoma in situ of the cervix, superficial bladder cancer (non-muscle-invasive tumors, carcinoma in situ, or T1 tumors), or early-stage thyroid cancer.
  11. Known clinically significant liver disease, including but not limited to hepatitis B virus (HBV) infection with positive HBV DNA (≥1 × 10⁴ IU/mL), hepatitis C virus (HCV) infection with positive HCV RNA (≥1 × 10³ IU/mL), or cirrhosis.
  12. Pregnant or breastfeeding women, women of childbearing potential with a positive pregnancy test prior to first dosing, or participants (or their partners) unwilling to use effective contraception during the study period.
  13. Any clinical or laboratory abnormality or compliance issue that, in the investigator's judgment, makes the participant unsuitable for participation in this study.
  14. Presence of severe psychological or psychiatric disorders.

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

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Experimental group
Radiation: pulsed radiotherapy
All enrolled participants will receive pulsed radiotherapy (PULSAR)

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Progression-Free Survival (PFS)
Time Frame: 1 year
1 year

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Zhen Zhang

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)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
May 1, 2025

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
May 1, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
May 1, 2027

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
January 26, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
January 26, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
February 3, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
February 3, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
January 26, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
January 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 2502314-15

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

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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