Can pulsed radiation reawaken the immune system against lung cancer?

NCT ID NCT06622174

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Aug 24, 2026 · Last updated Aug 25, 2026 · Updated 1 time

Summary

This phase I trial is testing whether giving radiation in short pulses, alongside immunotherapy, can help people with metastatic non-small cell lung cancer whose tumors have stopped responding to standard immunotherapy. The study will enroll 32 adults and will primarily look at the safety of this combination, while also tracking how long patients live without the disease progressing, overall survival, and quality of life. The goal is to see if this approach can overcome the cancer's ability to evade the immune system.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Pulsed radiotherapy combined with PD(L)-1 inhibitors
What this could lead to
If successful, this approach could offer a new way to treat metastatic lung cancer that has stopped responding to immunotherapy, potentially improving survival and quality of life.
What could go wrong
This is an early-phase trial with a small number of participants, so the benefits are uncertain. The combination may cause significant side effects, and the results may not apply to all patients.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

About 32 people

The number the study aims to enrol. It can still change while the study runs.

Started

Aug 2026

Expected to finish

Aug 2029

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Participants must be ≥ 18 years old * Ability to provide written informed consent * Actively receiving PD(L)-1 inhibitors * Progressive disease defined as per RECIST criteria 1.1 on CT metrics as a greater than 20% increase in the sum measurement of lesions, non-target unequivocal progressive disease or a new lesion on CT. * Radiological progression to ≥ 5 disease sites. Progression at the primary tumor site should be counted within the total number of progressive lesions. For patients with lymph node metastases, each node is counted as one site of metastasis. * Participants must have an Eastern Cooperative Oncology Group (ECOG) performance status of 0-2. * Patients with brain metastasis are allowed and should be treated as per standard of care * All sites of disease can, in the opinion of the investigator, be safely treated and targetable with high-to-intermediate or low dose radiotherapy (taking into account prior local therapy, organ function and underlying medical condition such as inflammatory bowel disease, pulmonary fibrosis, etc.) * Patients with prior metastases that have been treated with ablative therapies (e.g. radiotherapy, surgery or radiofrequency ablation) before their current line of systemic therapy, are eligible. * Patients receiving additional systemic therapy agents such as chemotherapy are eligible, provided the other systemic agents are temporarily halted during radiation treatment. Exclusion Criteria: * Pregnant or breastfeeding individuals are excluded. * Medical conditions that would hinder the safe administration of radiotherapy or follow-up. * Patients who are ineligible for immunotherapy. * Patients with a history of pneumonitis are excluded. * Presence of an active autoimmune disease.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

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  3. A doctor treating you

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Contacts and locations

Locations

  • Centre Hospitalier de l'Université de Montréal

    RECRUITING

    Montreal, Quebec, Canada

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