Clinical trial Recruiting at 1 site Phase 2 Interventional Ages 18 to 75

Optimal combination of radiotherapy schedules and Benmelstobart to induce abscopal responses in metastatic NSCLC

Official title: An Umbrella Trial of Combining Different Radiotherapy Fractionation Patterns With Immunotherapy for Multiple Metastases of Non-Small Cell Lung Cancer

Run by Xinqiao Hospital of Chongqing · NCT06953843 · Data updated 2026-11-12

This study will test whether different radiotherapy schedules given with Benmelstobart can cause shrinking of untreated tumors (the abscopal effect) in people with stage IV NSCLC who do not have EGFR/ALK mutations and have multiple metastases.

More NSCLC Stage IV Without EGFR/ALK Mutation trials

Quick facts

PhasePhase 2
Study typeInterventional
Ages18 Years to 75 Years
SexAll
Enrollment366 (estimated)
SponsorXinqiao Hospital of Chongqing
Academic / other
Drugs / interventionsimmunotherapy
Locations1 site (Chongqing, Chongqing Municipality)
StatusRecruiting
StartedJuly 9, 2025
Main results expectedJune 30, 2027
Study endsDecember 31, 2027
Registry record updatedJuly 14, 2025
Trial IDNCT06953843 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults 18–75 with pathologically confirmed stage IV NSCLC without EGFR/ALK (and other driver) mutations, more than three metastatic lesions, ECOG/PS 0–1, no active brain metastases (or stable lesions), and no contraindications to immunotherapy or radiotherapy.

Probably not a fit

Patients with activating driver mutations, uncontrolled severe organ dysfunction, recent myocardial infarction, other active malignancies, poor performance status, or active brain metastases are unlikely to benefit or be eligible for this protocol.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a prospective, multicenter, phase 2 umbrella trial comparing different radiotherapy fractionation patterns combined with the immunotherapy agent Benmelstobart, often given alongside chemotherapy, to see which approach best controls untreated (abscopal) lesions. The primary objective is to compare control rates of abscopal lesions across the different radiotherapy schedules. Key eligibility includes pathologically confirmed NSCLC, more than three metastatic lesions, absence of actionable driver mutations, performance status 0–1, age 18–75, and no active brain metastases. Optional imaging such as PET-CT (FDG and FMISO) may be used for assessment and patients must have no contraindications to immunotherapy or radiotherapy.

Why it matters

Potential benefit: If successful, the regimen could provide a relatively low-toxicity way to shrink distant metastatic tumors and improve overall disease control for patients with widespread, driver-negative NSCLC.

How similar studies have gone: Small studies combining radiotherapy with immune checkpoint inhibitors have reported occasional abscopal responses, but consistent, reproducible control of distant lesions is not established and the specific Benmelstobart plus fractionation strategies tested here are relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patient must meet all of the following inclusion criteria to be enrolled in this study:

  1. Non-small cell lung cancer confirmed by pathological histology.
  2. More than 3 metastatic lesions.
  3. No brain metastases or stable lesions.
  4. Negative for driver genes (including EGFR, ALK, ROS, BRAF, MET, RET).
  5. Performance status (PS) score of 0-1, with an expected survival period of more than 3 months.
  6. Age between 18 and 75 years old.
  7. Assessment by PET-CT (including FDG and FMISO, not mandatory).
  8. No contraindications to immunotherapy and radiotherapy.
  9. Signed the informed consent form.

Exclusion Criteria:

* Patients with any of the following criteria are not eligible for enrollment in this study:

  1. Those with severe dysfunction of important vital organs (heart, liver, kidney).
  2. Those accompanied by other malignant tumors.
  3. Uncontrolled heart diseases or myocardial infarction within the past 6 months.
  4. Those with a history of mental illness.
  5. Other situations in which the researcher deems it inappropriate for the subject to participate in the study.

Where it's running

  • the second affiliated hospital of Army medical university
    Chongqing, Chongqing Municipality, China
    Recruiting

Study contacts

  • Principal investigator: Jianguo Sun, MD — the second affiliated hospital of Army medical university, Chongqing, Chongqing 40037 Recruiting
  • Study coordinator: Jianguo Sun, MD
  • Email: sunjg09@aliyun.com
  • Phone: 86-13983155736

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.