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.
Quick facts
| Phase | Phase 2 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years to 75 Years |
| Sex | All |
| Enrollment | 366 (estimated) |
| Sponsor | Xinqiao Hospital of Chongqing Academic / other |
| Drugs / interventions | immunotherapy |
| Locations | 1 site (Chongqing, Chongqing Municipality) |
| Status | Recruiting |
| Started | July 9, 2025 |
| Main results expected | June 30, 2027 |
| Study ends | December 31, 2027 |
| Registry record updated | July 14, 2025 |
| Trial ID | NCT06953843 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
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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.
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Finding the best organ-targeted radiotherapy plus chemo and PD-1 combinations to trigger abscopal responses in metastatic non-small cell lung cancer without EGFR/ALK mutations
This study will try different combinations of radiotherapy, chemotherapy, and PD‑1 immunotherapy to see if they trigger whole-body (abscopal) tumor responses and improve outcomes for people with metastatic NSCLC who do not have EGFR or ALK mutations.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.