Lung cancer rebiopsy study aims to uncover immunotherapy resistance
NCT ID NCT04300062
First seen Jun 26, 2026 · Last updated Jun 26, 2026
Summary
This study collects tumor samples from 50 lung cancer patients whose disease has worsened while on immunotherapy. The goal is to analyze the tissue for clues about why the treatment stopped working. No new drug is being tested; instead, researchers hope to better understand resistance mechanisms to guide future therapies.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If successful, this study could reveal why some lung cancers stop responding to immunotherapy, pointing toward better treatments in the future.
- What could go wrong
- This is an observational study, not a treatment trial. It is small (50 participants) and early-stage, so findings may not lead to immediate changes in care.
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
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 50 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Aug 2020
- Expected to finish
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Aug 2027
An estimate. End dates often move.
- Lead sponsor
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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
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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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 Hide 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: * Diagnosed NSCLC or SCLC; * Patient treated priorly by ICI and progressed under ICI; * Have provided written informed consent for the study; * Be \>/= 18 years of age on day of signing informed consent. Exclusion Criteria: * Patient under guardianship or curatorship; * Unable to provide written informed consent for the study; * Technical impossibility to carry out tissular rebiopsy under local anesthesia.
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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.
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The places running it
1 site. The list below names each one and where it is.
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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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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Service de Pneumologie et Oncologie thoracique, Hôpital Ambroise Paré, APHP
RECRUITINGBoulogne-Billancourt, 92100, France
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